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https://github.com/falcosecurity/falco.git
synced 2026-03-26 22:52:14 +00:00
Compare commits
4 Commits
agent/0.70
...
0.7.0
| Author | SHA1 | Date | |
|---|---|---|---|
|
809d20c294 | ||
|
b0ae29c23a | ||
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d1b6b2be87 | ||
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e00181d553 |
3
.gitignore
vendored
3
.gitignore
vendored
@@ -1,7 +1,6 @@
|
||||
/build*
|
||||
*~
|
||||
*.pyc
|
||||
|
||||
test/falco_test.pyc
|
||||
test/falco_tests.yaml
|
||||
test/traces-negative
|
||||
test/traces-positive
|
||||
|
||||
@@ -21,7 +21,7 @@ install:
|
||||
- sudo python setup.py install
|
||||
- cd ../falco
|
||||
before_script:
|
||||
- export KERNELDIR=/lib/modules/$(uname -r)/build
|
||||
- export KERNELDIR=/lib/modules/$(ls /lib/modules | sort | head -1)/build
|
||||
script:
|
||||
- set -e
|
||||
- export CC="gcc-4.8"
|
||||
|
||||
55
CHANGELOG.md
55
CHANGELOG.md
@@ -2,58 +2,9 @@
|
||||
|
||||
This file documents all notable changes to Falco. The release numbering uses [semantic versioning](http://semver.org).
|
||||
|
||||
## v0.8.1
|
||||
|
||||
Released 2017-10-10
|
||||
|
||||
### Bug Fixes
|
||||
|
||||
* Fix packaging to specify correct built-in config file [[#288](https://github.com/draios/falco/pull/288)]
|
||||
|
||||
## v0.8.0
|
||||
|
||||
Released 2017-10-10
|
||||
|
||||
**Important**: the location for falco's configuration file has moved from `/etc/falco.yaml` to `/etc/falco/falco.yaml`. The default rules file has moved from `/etc/falco_rules.yaml` to `/etc/falco/falco_rules.yaml`. In addition, 0.8.0 has added a _local_ ruls file to `/etc/falco/falco_rules.local.yaml`. See [the documentation](https://github.com/draios/falco/wiki/Falco-Default-and-Local-Rules-Files) for more details.
|
||||
|
||||
### Major Changes
|
||||
|
||||
* Add the ability to append one list to another list by setting an `append: true` attribute. [[#264](https://github.com/draios/falco/pull/264)]
|
||||
* Add the ability to append one macro/rule to another list by setting an `append: true` attribute. [[#277](https://github.com/draios/falco/pull/277)]
|
||||
* Ensure that falco rules/config files are preserved across package upgrades/removes if modified. [[#278](https://github.com/draios/falco/pull/278)]
|
||||
* Add the notion of a "local" rules file that should contain modifications to the default falco rules file. [[#278](https://github.com/draios/falco/pull/278)]
|
||||
* When using json output, separately include the individual templated fields in the json object. [[#282](https://github.com/draios/falco/pull/282)]
|
||||
* Add the ability to keep a file/program pipe handle open across rule notifications. [[#283](https://github.com/draios/falco/pull/283)]
|
||||
* New argument `-V` validates rules file and immediately exits. [[#286](https://github.com/draios/falco/pull/286)]
|
||||
|
||||
### Minor Changes
|
||||
|
||||
* Minor updates to falco example programs [[#248](https://github.com/draios/falco/pull/248)] [[#275](https://github.com/draios/falco/pull/275)]
|
||||
* Also validate macros at rule parse time. [[#257](https://github.com/draios/falco/pull/257)]
|
||||
* Minor README typo fixes [[#276](https://github.com/draios/falco/pull/276)]
|
||||
* Add a government CLA (contributor license agreement). [[#263](https://github.com/draios/falco/pull/263)]
|
||||
* Add ability to only run rules with a priority >= some threshold [[#281](https://github.com/draios/falco/pull/281)]
|
||||
* Add ability to make output channels unbuffered [[#285](https://github.com/draios/falco/pull/285)]
|
||||
|
||||
### Bug Fixes
|
||||
|
||||
* Fix installation of falco on OSX [[#252](https://github.com/draios/falco/pull/252)]
|
||||
* Fix a bug that caused the trailing whitespace of a quoted string to be accidentally removed [[#254](https://github.com/draios/falco/pull/254)]
|
||||
* When multiple sets of kernel headers are installed, find the one for the running kernel [[#260](https://github.com/draios/falco/pull/260)]
|
||||
* Allow pathnames in rule/macro conditions to contain '.' characters [[#262](https://github.com/draios/falco/pull/262)]
|
||||
* Fix a bug where a list named "foo" would be substituted even if it were a substring of a longer word like "my_foo" [[#258](https://github.com/draios/falco/pull/258)]
|
||||
* Remove extra trailing newlines from rule output strings [[#265](https://github.com/draios/falco/pull/265)]
|
||||
* Improve build pathnames to avoid relative paths when possible [[#284](https://github.com/draios/falco/pull/284)]
|
||||
|
||||
### Rule Changes
|
||||
|
||||
* Significant changes to default ruleset to address FPs. These changes resulted from hundreds of hours of use in actual customer environments. [[#247](https://github.com/draios/falco/pull/247)] [[#259](https://github.com/draios/falco/pull/259)]
|
||||
* Add official gitlab EE docker image to list of known shell spawning images. Thanks @dkerwin! [[#270](https://github.com/draios/falco/pull/270)]
|
||||
* Add keepalived to list of shell spawning binaries. Thanks @dkerwin! [[#269](https://github.com/draios/falco/pull/269)]
|
||||
|
||||
## v0.7.0
|
||||
|
||||
Released 2017-05-30
|
||||
Released 2016-05-30
|
||||
|
||||
### Major Changes
|
||||
|
||||
@@ -76,7 +27,7 @@ None.
|
||||
|
||||
## v0.6.1
|
||||
|
||||
Released 2017-05-15
|
||||
Released 2016-05-15
|
||||
|
||||
### Major Changes
|
||||
|
||||
@@ -96,7 +47,7 @@ None
|
||||
|
||||
## v0.6.0
|
||||
|
||||
Released 2017-03-29
|
||||
Released 2016-03-29
|
||||
|
||||
### Major Changes
|
||||
|
||||
|
||||
@@ -7,7 +7,7 @@ if(NOT DEFINED FALCO_VERSION)
|
||||
endif()
|
||||
|
||||
if(NOT DEFINED FALCO_ETC_DIR)
|
||||
set(FALCO_ETC_DIR "/etc/falco")
|
||||
set(FALCO_ETC_DIR "/etc")
|
||||
endif()
|
||||
|
||||
if(NOT CMAKE_BUILD_TYPE)
|
||||
@@ -43,9 +43,7 @@ set(PACKAGE_NAME "falco")
|
||||
set(PROBE_VERSION "${FALCO_VERSION}")
|
||||
set(PROBE_NAME "falco-probe")
|
||||
set(PROBE_DEVICE_NAME "falco")
|
||||
if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
|
||||
set(CMAKE_INSTALL_PREFIX /usr CACHE PATH "Default install path" FORCE)
|
||||
endif()
|
||||
set(CMAKE_INSTALL_PREFIX /usr)
|
||||
|
||||
set(CMD_MAKE make)
|
||||
|
||||
@@ -303,7 +301,6 @@ if(NOT USE_BUNDLED_LPEG)
|
||||
else()
|
||||
set(LPEG_SRC "${PROJECT_BINARY_DIR}/lpeg-prefix/src/lpeg")
|
||||
set(LPEG_LIB "${PROJECT_BINARY_DIR}/lpeg-prefix/src/lpeg/build/lpeg.a")
|
||||
message(STATUS "Using bundled lpeg in '${LPEG_SRC}'")
|
||||
set(LPEG_DEPENDENCIES "")
|
||||
if(USE_BUNDLED_LUAJIT)
|
||||
list(APPEND LPEG_DEPENDENCIES "luajit")
|
||||
@@ -343,7 +340,6 @@ else()
|
||||
|
||||
set(LIBYAML_SRC "${PROJECT_BINARY_DIR}/libyaml-prefix/src/libyaml/src")
|
||||
set(LIBYAML_LIB "${LIBYAML_SRC}/.libs/libyaml.a")
|
||||
message(STATUS "Using bundled libyaml in '${LIBYAML_SRC}'")
|
||||
ExternalProject_Add(libyaml
|
||||
URL "http://download.draios.com/dependencies/libyaml-0.1.4.tar.gz"
|
||||
URL_MD5 "4a4bced818da0b9ae7fc8ebc690792a7"
|
||||
@@ -371,7 +367,6 @@ if(NOT USE_BUNDLED_LYAML)
|
||||
else()
|
||||
set(LYAML_SRC "${PROJECT_BINARY_DIR}/lyaml-prefix/src/lyaml/ext/yaml")
|
||||
set(LYAML_LIB "${LYAML_SRC}/.libs/yaml.a")
|
||||
message(STATUS "Using bundled lyaml in '${LYAML_SRC}'")
|
||||
set(LYAML_DEPENDENCIES "")
|
||||
if(USE_BUNDLED_LUAJIT)
|
||||
list(APPEND LYAML_DEPENDENCIES "luajit")
|
||||
@@ -392,19 +387,15 @@ endif()
|
||||
install(FILES falco.yaml
|
||||
DESTINATION "${FALCO_ETC_DIR}")
|
||||
|
||||
add_subdirectory(rules)
|
||||
|
||||
if(CMAKE_SYSTEM_NAME MATCHES "Linux")
|
||||
add_subdirectory("${SYSDIG_DIR}/driver" "${PROJECT_BINARY_DIR}/driver")
|
||||
endif()
|
||||
add_subdirectory("${SYSDIG_DIR}/userspace/libscap" "${PROJECT_BINARY_DIR}/userspace/libscap")
|
||||
add_subdirectory("${SYSDIG_DIR}/userspace/libsinsp" "${PROJECT_BINARY_DIR}/userspace/libsinsp")
|
||||
|
||||
set(FALCO_SINSP_LIBRARY sinsp)
|
||||
set(FALCO_SHARE_DIR share/falco)
|
||||
set(FALCO_ABSOLUTE_SHARE_DIR "${CMAKE_INSTALL_PREFIX}/${FALCO_SHARE_DIR}")
|
||||
set(FALCO_BIN_DIR bin)
|
||||
add_subdirectory(scripts)
|
||||
set(FALCO_SINSP_LIBRARY sinsp)
|
||||
set(FALCO_SHARE_DIR ${CMAKE_INSTALL_PREFIX}/share/falco)
|
||||
add_subdirectory(userspace/engine)
|
||||
add_subdirectory(userspace/falco)
|
||||
|
||||
@@ -425,7 +416,7 @@ set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Sysdig <support@sysdig.com>")
|
||||
set(CPACK_DEBIAN_PACKAGE_SECTION "utils")
|
||||
set(CPACK_DEBIAN_PACKAGE_HOMEPAGE "http://www.sysdig.org")
|
||||
set(CPACK_DEBIAN_PACKAGE_DEPENDS "dkms (>= 2.1.0.0)")
|
||||
set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA "${CMAKE_BINARY_DIR}/scripts/debian/postinst;${CMAKE_BINARY_DIR}/scripts/debian/prerm;${PROJECT_SOURCE_DIR}/scripts/debian/postrm;${PROJECT_SOURCE_DIR}/cpack/debian/conffiles")
|
||||
set(CPACK_DEBIAN_PACKAGE_CONTROL_EXTRA "${CMAKE_BINARY_DIR}/scripts/debian/postinst;${CMAKE_BINARY_DIR}/scripts/debian/prerm;${PROJECT_SOURCE_DIR}/scripts/debian/postrm")
|
||||
|
||||
set(CPACK_RPM_PACKAGE_LICENSE "GPLv2")
|
||||
set(CPACK_RPM_PACKAGE_URL "http://www.sysdig.org")
|
||||
|
||||
21
README.md
21
README.md
@@ -2,7 +2,7 @@
|
||||
|
||||
#### Latest release
|
||||
|
||||
**v0.8.1**
|
||||
**v0.7.0**
|
||||
Read the [change log](https://github.com/draios/falco/blob/dev/CHANGELOG.md)
|
||||
|
||||
Dev Branch: [](https://travis-ci.org/draios/falco)<br />
|
||||
@@ -33,9 +33,10 @@ Documentation
|
||||
|
||||
Join the Community
|
||||
---
|
||||
* Contact the [official mailing list](https://groups.google.com/forum/#!forum/falco) for support and to talk with other users.
|
||||
* Follow us on [Twitter](https://twitter.com/sysdig) for general falco and sysdig news.
|
||||
* This is our [blog](https://sysdig.com/blog/), where you can find the latest [falco](https://sysdig.com/blog/tag/falco/) posts.
|
||||
* Join our [Public Slack](https://slack.sysdig.com) channel for sysdig and falco announcements and discussions.
|
||||
* Join our [Public Slack](https://sysdig.slack.com) channel for sysdig and falco announcements and discussions.
|
||||
|
||||
License Terms
|
||||
---
|
||||
@@ -60,27 +61,15 @@ As always, we are grateful for your past and present contributions to falco.
|
||||
|
||||
**Individual contributions**: Individuals who wish to make contributions must review the [Individual Contributor License Agreement](./cla/falco_contributor_agreement.txt) and indicate agreement by adding the following line to every GIT commit message:
|
||||
|
||||
```
|
||||
falco-CLA-1.0-signed-off-by: Joe Smith <joe.smith@email.com>
|
||||
```
|
||||
|
||||
Use your real name; pseudonyms or anonymous contributions are not allowed.
|
||||
|
||||
**Corporate contributions**: Employees of corporations, members of LLCs or LLPs, or others acting on behalf of a contributing entity, must review the [Corporate Contributor License Agreement](./cla/falco_corp_contributor_agreement.txt), must be an authorized representative of the contributing entity, and indicate agreement to it on behalf of the contributing entity by adding the following lines to every GIT commit message:
|
||||
|
||||
```
|
||||
falco-CLA-1.0-contributing-entity: Full Legal Name of Entity
|
||||
falco-CLA-1.0-signed-off-by: Joe Smith <joe.smith@email.com>
|
||||
```
|
||||
|
||||
Use a real name of a natural person who is an authorized representative of the contributing entity; pseudonyms or anonymous contributions are not allowed.
|
||||
|
||||
**Government contributions**: Employees or officers of the United States Government, must review the [Government Contributor License Agreement](https://github.com/draios/falco/blob/dev/cla/falco_govt_contributor_agreement.txt), must be an authorized representative of the contributing entity, and indicate agreement to it on behalf of the contributing entity by adding the following lines to every GIT commit message:
|
||||
|
||||
```
|
||||
falco-CLA-1.0-contributing-govt-entity: Full Legal Name of Entity
|
||||
falco-CLA-1.0-signed-off-by: Joe Smith <joe.smith@email.com>
|
||||
This file is a work of authorship of an employee or officer of the United States Government and is not subject to copyright in the United States under 17 USC 105.
|
||||
falco-CLA-1.0-contributing-entity: Full Legal Name of Entity
|
||||
falco-CLA-1.0-signed-off-by: Joe Smith <joe.smith@email.com>
|
||||
```
|
||||
|
||||
Use a real name of a natural person who is an authorized representative of the contributing entity; pseudonyms or anonymous contributions are not allowed.
|
||||
|
||||
@@ -1,33 +0,0 @@
|
||||
DRAIOS, INC. <20> OPEN SOURCE CONTRIBUTION AGREEMENT FOR UNITED STATES GOVERNMENT CONTRIBUTING ENTITIES (<28>Agreement<6E>)
|
||||
|
||||
Draios, Inc. (<28>Draios<6F> or <20>Sysdig<69>) welcomes the work of others on our open source software projects. To contribute code back to our repositories, we require a contributing entity that is a United States Government agency to complete, and agree to, the Government Contributor Agreement (GCA) set forth here, by and through a designated authorized representative. This agreement clarifies the ability for us to use and incorporate the contributions of a government contributing entity in our projects and products. After agreeing to these terms, a contributing entity may contribute to our projects. To indicate the agreement of the contributing entity, an authorized representative shall follow the procedure set forth below under TO AGREE, after reading this Agreement. A <20>contributing entity<74> means any agency or unit of the United States government. We provide a separate CLA for individual contributors.
|
||||
|
||||
You accept and agree to the following terms and conditions for Your present and future Contributions that are submitted to Draios/Sysdig.
|
||||
|
||||
1. Definitions. "You" (or "Your") shall mean the contributing entity that has authored or otherwise has the right to contribute the Contribution, and that is making this Agreement with Draios/Sysdig. "Contribution" shall mean any original work of authorship, including any modifications or additions to an existing work, that is intentionally submitted by You to Draios/Sysdig for inclusion in, or documentation of, any of the products owned or managed by Draios/Sysdig (the "Work"). For the purposes of this definition, "submitted" means any form of electronic, verbal, or written communication sent to Draios/Sysdig or its representatives, including but not limited to communication on electronic mailing lists, source code control systems, and issue tracking systems that are managed by, or on behalf of, Draios/Sysdig for the purpose of discussing and improving the Work, but excluding communication that is conspicuously marked or otherwise designated in writing by You as "Not a Contribution."
|
||||
|
||||
2. Contributions Not Subject to Copyright. Each Contribution is a work authored by the United States Government or an employee or officer thereof and is not subject to copyright under 17 U.S.C. 105.
|
||||
|
||||
3. Grant of Patent License. Subject to the terms and conditions of this Agreement, You hereby grant to Draios/Sysdig and to recipients of software distributed by Draios/Sysdig a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable (except as stated in this section) patent license to make, have made, use, offer to sell, sell, import, and otherwise transfer the Work, where such license applies only to those patent claims that You have the right to license and that are necessarily infringed by Your Contribution(s) alone or by combination of Your Contribution(s) with the Work to which such Contribution(s) was submitted. If any entity other than Draios/Sysdig institutes patent litigation against You or any other entity (including a cross-claim or counterclaim in a lawsuit) alleging that your Contribution, or the Work to which you have contributed, constitutes direct or contributory patent infringement, then any patent licenses granted to that entity under this Agreement for that Contribution or Work shall terminate as of the date such litigation is filed.
|
||||
|
||||
4. You represent to Draios/Sysdig that You own or have the right to contribute Your Contributions to Draios/Sysdig, and that You are legally entitled to grant the license set forth above.
|
||||
|
||||
5. You represent that each of Your Contributions is Your original creation (see section 7 for submissions on behalf of others). You represent that Your Contribution submissions include complete details of any third-party license or other restriction (including, but not limited to, related patents and trademarks) of which You are personally aware and which are associated with any part of Your Contributions. You represent that Your sign-off indicating assent to this Agreement includes the real name of a natural person who is an authorized representative of You, and not a pseudonym, and that You are not attempting or making an anonymous Contribution.
|
||||
|
||||
6. You are not expected to provide support for Your Contributions, except to the extent You desire to provide support. You may provide support for free, for a fee, or not at all. Unless required by applicable law or agreed to in writing, You provide Your Contributions to Draios/Sysdig on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, including, without limitation, any warranties or conditions of TITLE, NON- INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE.
|
||||
|
||||
7. If You wish to submit work that is not Your original creation, You may submit it to Draios/Sysdig separately from any Contribution, identifying the complete details of its source and of any license or other restriction (including, but not limited to, related patents, trademarks, and license agreements) of which You are aware, and conspicuously marking the work as "Submitted on behalf of a third-party: [named here]".
|
||||
|
||||
8. You agree to notify Draios/Sysdig of any facts or circumstances of which you become aware that would make these representations inaccurate in any respect.
|
||||
|
||||
9. You understand and agree that this project and Your Contribution are public and that a record of the contribution, including all personal information that You submit with it, including the sign-off of Your authorized representative, may be stored by Draios/Sysdig indefinitely and may be redistributed to others. You understand and agree that Draios/Sysdig has no obligation to use any Contribution in any Draios/Sysdig project or product, and Draios/Sysdig may decline to accept Your Contributions or Draios/Sysdig may remove Your Contributions from Draios/Sysdig projects or products at any time without notice. You understand and agree that Draios/Sysdig is not and will not pay You any form of compensation, in currency, equity or otherwise, in exchange for Your Contributions or for Your assent to this Agreement. You understand and agree that You are independent of Draios/Sysdig and You are not, by entering into this Agreement or providing Your Contributions, becoming employed, hired as an independent contractor, or forming any other relationship with Draios/Sysdig relating to employment, compensation or ownership or involving any fiduciary obligation.
|
||||
|
||||
TO AGREE:
|
||||
Add the following lines to every GIT commit message:
|
||||
|
||||
falco-CLA-1.0-contributing-govt-entity: Full Legal Name of Entity
|
||||
falco-CLA-1.0-signed-off-by: Joe Smith joe.smith@email.com
|
||||
This file is a work of authorship of an employee or officer of the United States Government and is not subject to copyright in the United States under 17 USC 105.
|
||||
|
||||
Use a real name of a natural person who is an authorized representative of the contributing entity; pseudonyms or anonymous contributions are not allowed.
|
||||
|
||||
@@ -1,3 +0,0 @@
|
||||
/etc/falco/falco.yaml
|
||||
/etc/falco/falco_rules.yaml
|
||||
/etc/falco/falco_rules.local.yaml
|
||||
@@ -5,7 +5,7 @@ express_server:
|
||||
working_dir: /usr/src/app
|
||||
command: bash -c "npm install && node server.js"
|
||||
ports:
|
||||
- "8181:8181"
|
||||
- "8080:8080"
|
||||
volumes:
|
||||
- ${PWD}:/usr/src/app
|
||||
|
||||
|
||||
@@ -2,19 +2,19 @@ var express = require('express'); // call express
|
||||
var app = express(); // define our app using express
|
||||
var child_process = require('child_process');
|
||||
|
||||
var port = process.env.PORT || 8181; // set our port
|
||||
var port = process.env.PORT || 8080; // set our port
|
||||
|
||||
// ROUTES FOR OUR API
|
||||
// =============================================================================
|
||||
var router = express.Router(); // get an instance of the express Router
|
||||
|
||||
// test route to make sure everything is working (accessed at GET http://localhost:8181/api)
|
||||
// test route to make sure everything is working (accessed at GET http://localhost:8080/api)
|
||||
router.get('/', function(req, res) {
|
||||
res.json({ message: 'API available'});
|
||||
});
|
||||
|
||||
router.get('/exec/:cmd', function(req, res) {
|
||||
var ret = child_process.spawnSync(req.params.cmd, { shell: true});
|
||||
var ret = child_process.spawnSync(req.params.cmd);
|
||||
res.send(ret.stdout);
|
||||
});
|
||||
|
||||
|
||||
37
falco.yaml
37
falco.yaml
@@ -1,15 +1,5 @@
|
||||
# File(s) containing Falco rules, loaded at startup.
|
||||
#
|
||||
# falco_rules.yaml ships with the falco package and is overridden with
|
||||
# every new software version. falco_rules.local.yaml is only created
|
||||
# if it doesn't exist. If you want to customize the set of rules, add
|
||||
# your customizations to falco_rules.local.yaml.
|
||||
#
|
||||
# The files will be read in the order presented here, so make sure if
|
||||
# you have overrides they appear in later files.
|
||||
rules_file:
|
||||
- /etc/falco/falco_rules.yaml
|
||||
- /etc/falco/falco_rules.local.yaml
|
||||
# File containing Falco rules, loaded at startup.
|
||||
rules_file: /etc/falco_rules.yaml
|
||||
|
||||
# Whether to output events in json or text
|
||||
json_output: false
|
||||
@@ -25,16 +15,6 @@ log_syslog: true
|
||||
# "alert", "critical", "error", "warning", "notice", "info", "debug".
|
||||
log_level: info
|
||||
|
||||
# Minimum rule priority level to load and run. All rules having a
|
||||
# priority more severe than this level will be loaded/run. Can be one
|
||||
# of "emergency", "alert", "critical", "error", "warning", "notice",
|
||||
# "info", "debug".
|
||||
priority: debug
|
||||
|
||||
# Whether or not output to any of the output channels below is
|
||||
# buffered. Defaults to true
|
||||
buffered_outputs: true
|
||||
|
||||
# A throttling mechanism implemented as a token bucket limits the
|
||||
# rate of falco notifications. This throttling is controlled by the following configuration
|
||||
# options:
|
||||
@@ -57,13 +37,8 @@ outputs:
|
||||
syslog_output:
|
||||
enabled: true
|
||||
|
||||
# If keep_alive is set to true, the file will be opened once and
|
||||
# continuously written to, with each output message on its own
|
||||
# line. If keep_alive is set to false, the file will be re-opened
|
||||
# for each output message.
|
||||
file_output:
|
||||
enabled: false
|
||||
keep_alive: false
|
||||
filename: ./events.txt
|
||||
|
||||
stdout_output:
|
||||
@@ -74,15 +49,7 @@ stdout_output:
|
||||
# program: "jq '{text: .output}' | curl -d @- -X POST https://hooks.slack.com/services/XXX"
|
||||
# - logging (alternate method than syslog):
|
||||
# program: logger -t falco-test
|
||||
# - send over a network connection:
|
||||
# program: nc host.example.com 80
|
||||
|
||||
# If keep_alive is set to true, the program will be started once and
|
||||
# continuously written to, with each output message on its own
|
||||
# line. If keep_alive is set to false, the program will be re-spawned
|
||||
# for each output message.
|
||||
|
||||
program_output:
|
||||
enabled: false
|
||||
keep_alive: false
|
||||
program: mail -s "Falco Notification" someone@example.com
|
||||
|
||||
@@ -1,10 +1,9 @@
|
||||
if(NOT DEFINED FALCO_ETC_DIR)
|
||||
set(FALCO_ETC_DIR "/etc/falco")
|
||||
set(FALCO_ETC_DIR "/etc")
|
||||
endif()
|
||||
|
||||
if(NOT DEFINED FALCO_RULES_DEST_FILENAME)
|
||||
set(FALCO_RULES_DEST_FILENAME "falco_rules.yaml")
|
||||
set(FALCO_LOCAL_RULES_DEST_FILENAME "falco_rules.local.yaml")
|
||||
endif()
|
||||
|
||||
if(DEFINED FALCO_COMPONENT)
|
||||
@@ -12,18 +11,9 @@ install(FILES falco_rules.yaml
|
||||
COMPONENT "${FALCO_COMPONENT}"
|
||||
DESTINATION "${FALCO_ETC_DIR}"
|
||||
RENAME "${FALCO_RULES_DEST_FILENAME}")
|
||||
|
||||
install(FILES falco_rules.local.yaml
|
||||
COMPONENT "${FALCO_COMPONENT}"
|
||||
DESTINATION "${FALCO_ETC_DIR}"
|
||||
RENAME "${FALCO_LOCAL_RULES_DEST_FILENAME}")
|
||||
else()
|
||||
install(FILES falco_rules.yaml
|
||||
DESTINATION "${FALCO_ETC_DIR}"
|
||||
RENAME "${FALCO_RULES_DEST_FILENAME}")
|
||||
|
||||
install(FILES falco_rules.local.yaml
|
||||
DESTINATION "${FALCO_ETC_DIR}"
|
||||
RENAME "${FALCO_LOCAL_RULES_DEST_FILENAME}")
|
||||
DESTINATION "${FALCO_ETC_DIR}"
|
||||
RENAME "${FALCO_RULES_DEST_FILENAME}")
|
||||
endif()
|
||||
|
||||
|
||||
@@ -1,13 +0,0 @@
|
||||
####################
|
||||
# Your custom rules!
|
||||
####################
|
||||
|
||||
# Add new rules, like this one
|
||||
# - rule: The program "sudo" is run in a container
|
||||
# desc: An event will trigger every time you run sudo in a container
|
||||
# condition: evt.type = execve and evt.dir=< and container.id != host and proc.name = sudo
|
||||
# output: "Sudo run in container (user=%user.name %container.info parent=%proc.pname cmdline=%proc.cmdline)"
|
||||
# priority: ERROR
|
||||
# tags: [users, container]
|
||||
|
||||
# Or override/append to any rule, macro, or list from the Default Rules
|
||||
@@ -14,10 +14,10 @@
|
||||
# condition: (syscall.type=read and evt.dir=> and fd.type in (file, directory))
|
||||
|
||||
- macro: open_write
|
||||
condition: (evt.type=open or evt.type=openat) and evt.is_open_write=true and fd.typechar='f' and fd.num>=0
|
||||
condition: (evt.type=open or evt.type=openat) and evt.is_open_write=true and fd.typechar='f'
|
||||
|
||||
- macro: open_read
|
||||
condition: (evt.type=open or evt.type=openat) and evt.is_open_read=true and fd.typechar='f' and fd.num>=0
|
||||
condition: (evt.type=open or evt.type=openat) and evt.is_open_read=true and fd.typechar='f'
|
||||
|
||||
- macro: rename
|
||||
condition: evt.type = rename
|
||||
@@ -40,43 +40,23 @@
|
||||
condition: fd.directory in (/bin, /sbin, /usr/bin, /usr/sbin)
|
||||
|
||||
- macro: bin_dir_mkdir
|
||||
condition: >
|
||||
evt.arg[0] startswith /bin/ or
|
||||
evt.arg[0] startswith /sbin/ or
|
||||
evt.arg[0] startswith /usr/bin/ or
|
||||
evt.arg[0] startswith /usr/sbin/
|
||||
|
||||
condition: evt.arg[0] startswith /bin/ or evt.arg[0] startswith /sbin/ or evt.arg[0] startswith /usr/bin/ or evt.arg[0] startswith /usr/sbin/
|
||||
- macro: bin_dir_rename
|
||||
condition: >
|
||||
evt.arg[1] startswith /bin/ or
|
||||
evt.arg[1] startswith /sbin/ or
|
||||
evt.arg[1] startswith /usr/bin/ or
|
||||
evt.arg[1] startswith /usr/sbin/
|
||||
condition: evt.arg[1] startswith /bin/ or evt.arg[1] startswith /sbin/ or evt.arg[1] startswith /usr/bin/ or evt.arg[1] startswith /usr/sbin/
|
||||
|
||||
- macro: etc_dir
|
||||
condition: fd.name startswith /etc
|
||||
|
||||
- macro: ubuntu_so_dirs
|
||||
condition: >
|
||||
fd.name startswith /lib/x86_64-linux-gnu or
|
||||
fd.name startswith /usr/lib/x86_64-linux-gnu or
|
||||
fd.name startswith /usr/lib/sudo
|
||||
|
||||
condition: fd.name startswith /lib/x86_64-linux-gnu or fd.name startswith /usr/lib/x86_64-linux-gnu or fd.name startswith /usr/lib/sudo
|
||||
- macro: centos_so_dirs
|
||||
condition: >
|
||||
fd.name startswith /lib64 or
|
||||
fd.name startswith /usr/lib64 or
|
||||
fd.name startswith /usr/libexec
|
||||
|
||||
condition: fd.name startswith /lib64 or fd.name startswith /usr/lib64 or fd.name startswith /usr/libexec
|
||||
- macro: linux_so_dirs
|
||||
condition: ubuntu_so_dirs or centos_so_dirs or fd.name=/etc/ld.so.cache
|
||||
|
||||
- list: shell_binaries
|
||||
items: [bash, csh, ksh, sh, tcsh, zsh, dash]
|
||||
|
||||
- list: shell_mgmt_binaries
|
||||
items: [add-shell, remove-shell]
|
||||
|
||||
- macro: shell_procs
|
||||
condition: proc.name in (shell_binaries)
|
||||
|
||||
@@ -96,10 +76,7 @@
|
||||
|
||||
# dpkg -L login | grep bin | xargs ls -ld | grep -v '^d' | awk '{print $9}' | xargs -L 1 basename | tr "\\n" ","
|
||||
- list: login_binaries
|
||||
items: [
|
||||
login, systemd, '"(systemd)"', systemd-logind, su,
|
||||
nologin, faillog, lastlog, newgrp, sg
|
||||
]
|
||||
items: [login, systemd, '"(systemd)"', systemd-logind, su, nologin, faillog, lastlog, newgrp, sg]
|
||||
|
||||
# dpkg -L passwd | grep bin | xargs ls -ld | grep -v '^d' | awk '{print $9}' | xargs -L 1 basename | tr "\\n" ","
|
||||
- list: passwd_binaries
|
||||
@@ -110,8 +87,7 @@
|
||||
gpasswd, chfn, expiry, passwd, vigr, cpgr
|
||||
]
|
||||
|
||||
# repoquery -l shadow-utils | grep bin | xargs ls -ld | grep -v '^d' |
|
||||
# awk '{print $9}' | xargs -L 1 basename | tr "\\n" ","
|
||||
# repoquery -l shadow-utils | grep bin | xargs ls -ld | grep -v '^d' | awk '{print $9}' | xargs -L 1 basename | tr "\\n" ","
|
||||
- list: shadowutils_binaries
|
||||
items: [
|
||||
chage, gpasswd, lastlog, newgrp, sg, adduser, deluser, chpasswd,
|
||||
@@ -123,7 +99,7 @@
|
||||
items: [setup-backend, dragent, sdchecks]
|
||||
|
||||
- list: docker_binaries
|
||||
items: [docker, dockerd, exe, docker-compose, docker-entrypoi]
|
||||
items: [docker, dockerd, exe, docker-compose]
|
||||
|
||||
- list: k8s_binaries
|
||||
items: [hyperkube, skydns, kube2sky, exechealthz]
|
||||
@@ -131,17 +107,6 @@
|
||||
- list: lxd_binaries
|
||||
items: [lxd, lxcfs]
|
||||
|
||||
# Utility/etc programs known to run on mesos slaves. Truncation
|
||||
# intentional.
|
||||
- list: mesos_slave_binaries
|
||||
items: [mesos-health-ch, mesos-docker-ex, mesos-agent, mesos-slave, mesos-logrotate, mesos-fetcher, mesos-executor, 3dt]
|
||||
|
||||
- list: phusion_passenger_binaries
|
||||
items: [PassengerAgent]
|
||||
|
||||
- list: chef_binaries
|
||||
items: [chef-client]
|
||||
|
||||
- list: http_server_binaries
|
||||
items: [nginx, httpd, httpd-foregroun, lighttpd]
|
||||
|
||||
@@ -149,29 +114,19 @@
|
||||
items: [mysqld]
|
||||
|
||||
- list: gitlab_binaries
|
||||
items: [gitlab-shell, gitlab-mon, gitlab-runner-b, git]
|
||||
items: [gitlab-shell, gitlab-mon, git]
|
||||
|
||||
- macro: server_procs
|
||||
condition: proc.name in (http_server_binaries, db_server_binaries, docker_binaries, sshd)
|
||||
|
||||
# The explicit quotes are needed to avoid the - characters being
|
||||
# interpreted by the filter expression.
|
||||
- list: rpm_binaries
|
||||
items: [dnf, rpm, rpmkey, yum, '"75-system-updat"']
|
||||
|
||||
- macro: rpm_procs
|
||||
condition: proc.name in (rpm_binaries)
|
||||
|
||||
- list: deb_binaries
|
||||
items: [dpkg, dpkg-preconfigu, dpkg-reconfigur, apt, apt-get, aptitude,
|
||||
frontend, preinst, add-apt-reposit, apt-auto-remova, apt-key,
|
||||
apt-listchanges, unattended-upgr
|
||||
]
|
||||
|
||||
# The truncated dpkg-preconfigu is intentional, process names are
|
||||
# truncated at the sysdig level.
|
||||
- list: package_mgmt_binaries
|
||||
items: [rpm_binaries, deb_binaries, update-alternat, gem]
|
||||
items: [
|
||||
dpkg, dpkg-preconfigu, dnf, rpm, rpmkey, yum, frontend,
|
||||
apt, apt-get, aptitude, add-apt-reposit, apt-auto-remova, apt-key,
|
||||
preinst, update-alternat, unattended-upgr
|
||||
]
|
||||
|
||||
- macro: package_mgmt_procs
|
||||
condition: proc.name in (package_mgmt_binaries)
|
||||
@@ -187,14 +142,11 @@
|
||||
- list: userexec_binaries
|
||||
items: [sudo, su]
|
||||
|
||||
- list: known_setuid_binaries
|
||||
items: [sshd, dbus-daemon-lau, ping, ping6, critical-stack-]
|
||||
|
||||
- list: user_mgmt_binaries
|
||||
items: [login_binaries, passwd_binaries, shadowutils_binaries]
|
||||
|
||||
- list: dev_creation_binaries
|
||||
items: [blkid, rename_device, update_engine]
|
||||
items: [blkid]
|
||||
|
||||
- list: aide_wrapper_binaries
|
||||
items: [aide.wrapper, update-aide.con]
|
||||
@@ -202,47 +154,20 @@
|
||||
- list: hids_binaries
|
||||
items: [aide]
|
||||
|
||||
- list: vpn_binaries
|
||||
items: [openvpn]
|
||||
|
||||
- list: nomachine_binaries
|
||||
items: [nxexec, nxnode.bin, nxserver.bin, nxclient.bin]
|
||||
|
||||
- list: x2go_binaries
|
||||
items: [x2gosuspend-age, x2goagent]
|
||||
|
||||
- list: xray_rabbitmq_binaries
|
||||
items: ['"1_scheduler"', '"2_scheduler"', '"3_scheduler"', '"4_scheduler"']
|
||||
|
||||
- list: nids_binaries
|
||||
items: [bro, broctl]
|
||||
|
||||
- list: monitoring_binaries
|
||||
items: [icinga2, nrpe, npcd, check_sar_perf., qualys-cloud-ag]
|
||||
items: [icinga2, nrpe, npcd, check_sar_perf.]
|
||||
|
||||
- macro: system_procs
|
||||
condition: proc.name in (coreutils_binaries, user_mgmt_binaries)
|
||||
|
||||
- list: mail_binaries
|
||||
items: [sendmail, sendmail-msp, postfix, procmail, exim4, pickup, showq, mailq]
|
||||
|
||||
- list: sendmail_config_binaries
|
||||
items: [
|
||||
update_conf, parse_mc, makemap_hash, newaliases, update_mk, update_tlsm4,
|
||||
update_db, update_mc, ssmtp.postinst, mailq
|
||||
]
|
||||
|
||||
- list: make_binaries
|
||||
items: [make, gmake, cmake]
|
||||
|
||||
- list: keepalived_binaries
|
||||
items: [keepalived]
|
||||
items: [sendmail, sendmail-msp, postfix, procmail, exim4, pickup, showq]
|
||||
|
||||
- macro: sensitive_files
|
||||
condition: >
|
||||
fd.name startswith /etc and
|
||||
(fd.name in (/etc/shadow, /etc/sudoers, /etc/pam.conf)
|
||||
or fd.directory in (/etc/sudoers.d, /etc/pam.d))
|
||||
condition: fd.name startswith /etc and (fd.name in (/etc/shadow, /etc/sudoers, /etc/pam.conf) or fd.directory in (/etc/sudoers.d, /etc/pam.d))
|
||||
|
||||
# Indicates that the process is new. Currently detected using time
|
||||
# since process was started, using a threshold of 5 seconds.
|
||||
@@ -253,8 +178,7 @@
|
||||
- macro: inbound
|
||||
condition: ((evt.type=listen and evt.dir=>) or (evt.type=accept and evt.dir=<))
|
||||
|
||||
# Currently sendto is an ignored syscall, otherwise this could also
|
||||
# check for (evt.type=sendto and evt.dir=>)
|
||||
# Currently sendto is an ignored syscall, otherwise this could also check for (evt.type=sendto and evt.dir=>)
|
||||
- macro: outbound
|
||||
condition: evt.type=connect and evt.dir=< and (fd.typechar=4 or fd.typechar=6)
|
||||
|
||||
@@ -263,10 +187,7 @@
|
||||
|
||||
# Ssh
|
||||
- macro: ssh_error_message
|
||||
condition: >
|
||||
(evt.arg.data contains "Invalid user" or
|
||||
evt.arg.data contains "preauth" or
|
||||
evt.arg.data contains "Failed password")
|
||||
condition: (evt.arg.data contains "Invalid user" or evt.arg.data contains "preauth" or evt.arg.data contains "Failed password")
|
||||
|
||||
# System
|
||||
- macro: modules
|
||||
@@ -282,25 +203,12 @@
|
||||
# the command line.
|
||||
- macro: container
|
||||
condition: container.id != host
|
||||
|
||||
- macro: interactive
|
||||
condition: >
|
||||
((proc.aname=sshd and proc.name != sshd) or
|
||||
proc.name=systemd-logind or proc.name=login)
|
||||
|
||||
condition: ((proc.aname=sshd and proc.name != sshd) or proc.name=systemd-logind or proc.name=login)
|
||||
- macro: syslog
|
||||
condition: fd.name in (/dev/log, /run/systemd/journal/syslog)
|
||||
|
||||
- list: cron_binaries
|
||||
items: [anacron, cron, crond]
|
||||
|
||||
# https://github.com/liske/needrestart
|
||||
- list: needrestart_binaries
|
||||
items: [needrestart, 10-dpkg, 20-rpm, 30-pacman]
|
||||
|
||||
# Possible scripts run by sshkit
|
||||
- list: sshkit_script_binaries
|
||||
items: [10_etc_sudoers., 10_passwd_group]
|
||||
items: [cron, crond]
|
||||
|
||||
# System users that should never log into a system. Consider adding your own
|
||||
# service users (e.g. 'apache' or 'mysqld') here.
|
||||
@@ -320,102 +228,14 @@
|
||||
condition: (proc.name in (python, pypy) and proc.cmdline contains ansible)
|
||||
|
||||
- macro: python_running_denyhosts
|
||||
condition: >
|
||||
(proc.name=python and
|
||||
(proc.cmdline contains /usr/sbin/denyhosts or
|
||||
proc.cmdline contains /usr/local/bin/denyhosts.py))
|
||||
condition: (proc.name=python and (proc.cmdline contains /usr/sbin/denyhosts or proc.cmdline contains /usr/local/bin/denyhosts.py))
|
||||
|
||||
- macro: parent_python_running_denyhosts
|
||||
condition: >
|
||||
(proc.pname=python and
|
||||
(proc.pcmdline contains /usr/sbin/denyhosts or
|
||||
proc.pcmdline contains /usr/local/bin/denyhosts.py))
|
||||
|
||||
- macro: parent_python_running_sdchecks
|
||||
condition: >
|
||||
(proc.pname in (python, python2.7) and
|
||||
(proc.pcmdline contains /opt/draios/bin/sdchecks))
|
||||
condition: (proc.pname=python and (proc.pcmdline contains /usr/sbin/denyhosts or proc.pcmdline contains /usr/local/bin/denyhosts.py))
|
||||
|
||||
- macro: parent_bro_running_python
|
||||
condition: (proc.pname=python and proc.cmdline contains /usr/share/broctl)
|
||||
|
||||
- macro: parent_java_running_jenkins
|
||||
condition: >
|
||||
(proc.pname=java and proc.pcmdline contains jenkins.war
|
||||
or proc.pcmdline contains /tmp/slave.jar)
|
||||
|
||||
- macro: jenkins_script_sh
|
||||
condition: (proc.pcmdline startswith "script.sh -xe /var/jenkins_home")
|
||||
|
||||
- macro: parent_java_running_echo
|
||||
condition: (proc.pname=java and proc.cmdline startswith "sh -c echo")
|
||||
|
||||
- macro: parent_java_running_sbt
|
||||
condition: (proc.pname=java and proc.pcmdline contains sbt-launch.jar)
|
||||
|
||||
# The crxlsx is a bit different than the other build-like things, but
|
||||
# close enough to add here rather than create a separate macro.
|
||||
- macro: parent_scripting_running_builds
|
||||
condition: >
|
||||
(proc.pname in (php,php5-fpm,php-fpm7.1,python,ruby,ruby2.3,node) and (
|
||||
proc.cmdline startswith "sh -c git" or
|
||||
proc.cmdline startswith "sh -c date" or
|
||||
proc.cmdline startswith "sh -c /usr/bin/g++" or
|
||||
proc.cmdline startswith "sh -c /usr/bin/gcc" or
|
||||
proc.cmdline startswith "sh -c gcc" or
|
||||
proc.cmdline startswith "sh -c if type gcc" or
|
||||
proc.cmdline startswith "sh -c cd '/var/www/edi/';LC_ALL=en_US.UTF-8 git" or
|
||||
proc.cmdline startswith "sh -c /usr/src/app/crxlsx/bin/linux/crxlsx" or
|
||||
proc.pcmdline startswith "node /opt/nodejs/bin/yarn"))
|
||||
|
||||
- macro: parent_node_running_npm
|
||||
condition: proc.pcmdline startswith "node /usr/local/bin/npm"
|
||||
|
||||
- macro: parent_nginx_running_serf
|
||||
condition: (proc.pname=nginx and proc.cmdline startswith "sh -c serf")
|
||||
|
||||
- macro: parent_Xvfb_running_xkbcomp
|
||||
condition: (proc.pname=Xvfb and proc.cmdline startswith 'sh -c "/usr/bin/xkbcomp"')
|
||||
|
||||
- macro: mysql_image_running_healthcheck
|
||||
condition: container.image=mysql and proc.cmdline="sh -c /healthcheck.sh"
|
||||
|
||||
- macro: bundle_running_ruby
|
||||
condition: >
|
||||
(proc.pname=ruby and (
|
||||
proc.aname[2]=bundle or
|
||||
proc.aname[3]=bundle or
|
||||
proc.aname[4]=bundle))
|
||||
|
||||
# Qualys seems to run a variety of shell subprocesses, at various
|
||||
# levels. This checks at a few levels without the cost of a full
|
||||
# proc.aname, which traverses the full parent heirarchy.
|
||||
- macro: run_by_qualys
|
||||
condition: >
|
||||
(proc.pname=qualys-cloud-ag or
|
||||
proc.aname[2]=qualys-cloud-ag or
|
||||
proc.aname[3]=qualys-cloud-ag or
|
||||
proc.aname[4]=qualys-cloud-ag)
|
||||
|
||||
# Chef is similar.
|
||||
- macro: run_by_chef
|
||||
condition: (proc.aname[2]=chef_command_wr or proc.aname[3]=chef_command_wr)
|
||||
|
||||
- macro: run_by_adclient
|
||||
condition: (proc.aname[2]=adclient or proc.aname[3]=adclient or proc.aname[4]=adclient)
|
||||
|
||||
- macro: run_by_centrify
|
||||
condition: (proc.aname[2]=centrify or proc.aname[3]=centrify or proc.aname[4]=centrify)
|
||||
|
||||
- macro: run_by_puppet
|
||||
condition: (proc.aname[2]=puppet or proc.aname[3]=puppet)
|
||||
|
||||
- macro: run_by_h2o
|
||||
condition: (proc.pname=perl and proc.aname[2]=h2o)
|
||||
|
||||
- macro: run_by_passenger_agent
|
||||
condition: (proc.pname=ruby and proc.aname[2]=PassengerAgent)
|
||||
|
||||
# As a part of kernel upgrades, dpkg will spawn a perl script with the
|
||||
# name linux-image-N.N. This macro matches that.
|
||||
- macro: parent_linux_image_upgrade_script
|
||||
@@ -431,68 +251,27 @@
|
||||
- rule: Write below binary dir
|
||||
desc: an attempt to write to any file below a set of binary directories
|
||||
condition: bin_dir and evt.dir = < and open_write and not package_mgmt_procs
|
||||
output: >
|
||||
File below a known binary directory opened for writing (user=%user.name
|
||||
command=%proc.cmdline file=%fd.name)
|
||||
output: "File below a known binary directory opened for writing (user=%user.name command=%proc.cmdline file=%fd.name)"
|
||||
priority: ERROR
|
||||
tags: [filesystem]
|
||||
|
||||
- list: safe_etc_dirs
|
||||
items: [/etc/cassandra, /etc/ssl/certs/java, /etc/logstash, /etc/nginx/conf.d, /etc/container_environment, /etc/hrmconfig]
|
||||
|
||||
- macro: fluentd_writing_conf_files
|
||||
condition: (proc.name=start-fluentd and fd.name in (/etc/fluent/fluent.conf, /etc/td-agent/td-agent.conf))
|
||||
|
||||
- macro: qualys_writing_conf_files
|
||||
condition: (proc.name=qualys-cloud-ag and fd.name=/etc/qualys/cloud-agent/qagent-log.conf)
|
||||
|
||||
- macro: git_writing_nssdb
|
||||
condition: (proc.cmdline="git-remote-http origin" and fd.directory=/etc/pki/nssdb)
|
||||
|
||||
# Add conditions to this macro (probably in a separate file,
|
||||
# overwriting this macro) to allow for specific combinations of
|
||||
# programs writing below specific directories below
|
||||
# /etc. fluentd_writing_conf_files is a good example to follow, as it
|
||||
# specifies both the program doing the writing as well as the specific
|
||||
# files it is allowed to modify.
|
||||
#
|
||||
# In this file, it just takes one of the programs in the base macro
|
||||
# and repeats it.
|
||||
|
||||
- macro: user_known_write_etc_conditions
|
||||
condition: proc.name=confd
|
||||
|
||||
- macro: write_etc_common
|
||||
condition: >
|
||||
etc_dir and evt.dir = < and open_write
|
||||
and not proc.name in (passwd_binaries, shadowutils_binaries, sysdigcloud_binaries,
|
||||
package_mgmt_binaries, ssl_mgmt_binaries, dhcp_binaries,
|
||||
dev_creation_binaries, shell_mgmt_binaries,
|
||||
sendmail_config_binaries,
|
||||
sshkit_script_binaries,
|
||||
ldconfig.real, ldconfig, confd, gpg, insserv,
|
||||
apparmor_parser, update-mime, tzdata.config, tzdata.postinst,
|
||||
systemd, systemd-machine, systemd-sysuser,
|
||||
debconf-show, rollerd, bind9.postinst, sv,
|
||||
gen_resolvconf., update-ca-certi, certbot, runsv,
|
||||
qualys-cloud-ag, locales.postins, nomachine_binaries,
|
||||
adclient, certutil, crlutil)
|
||||
and not proc.pname in (sysdigcloud_binaries, sendmail_config_binaries, hddtemp.postins, sshkit_script_binaries)
|
||||
and not fd.name pmatch (safe_etc_dirs)
|
||||
and not fd.name in (/etc/container_environment.sh, /etc/container_environment.json, /etc/motd, /etc/motd.svc)
|
||||
systemd-machine, debconf-show, rollerd, bind9.postinst, sv)
|
||||
and not proc.pname in (sysdigcloud_binaries)
|
||||
and not fd.directory in (/etc/cassandra, /etc/ssl/certs/java)
|
||||
and not ansible_running_python
|
||||
and not python_running_denyhosts
|
||||
and not fluentd_writing_conf_files
|
||||
and not user_known_write_etc_conditions
|
||||
and not run_by_centrify
|
||||
and not run_by_adclient
|
||||
and not qualys_writing_conf_files
|
||||
and not git_writing_nssdb
|
||||
|
||||
- rule: Write below etc
|
||||
desc: an attempt to write to any file below /etc, not in a pipe installer session
|
||||
condition: write_etc_common and not proc.sname=fbash
|
||||
output: "File below /etc opened for writing (user=%user.name command=%proc.cmdline parent=%proc.pname file=%fd.name name=%proc.name gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4])"
|
||||
output: "File below /etc opened for writing (user=%user.name command=%proc.cmdline file=%fd.name)"
|
||||
priority: ERROR
|
||||
tags: [filesystem]
|
||||
|
||||
@@ -500,9 +279,7 @@
|
||||
- rule: Write below etc in installer
|
||||
desc: an attempt to write to any file below /etc, in a pipe installer session
|
||||
condition: write_etc_common and proc.sname=fbash
|
||||
output: >
|
||||
File below /etc opened for writing (user=%user.name command=%proc.cmdline
|
||||
file=%fd.name) within pipe installer session
|
||||
output: "File below /etc opened for writing (user=%user.name command=%proc.cmdline file=%fd.name) within pipe installer session"
|
||||
priority: INFO
|
||||
tags: [filesystem]
|
||||
|
||||
@@ -510,91 +287,53 @@
|
||||
condition: proc.name in (cmp, cp) and proc.pname=passwd
|
||||
|
||||
- rule: Read sensitive file trusted after startup
|
||||
desc: >
|
||||
an attempt to read any sensitive file (e.g. files containing user/password/authentication
|
||||
information) by a trusted program after startup. Trusted programs might read these files
|
||||
at startup to load initial state, but not afterwards.
|
||||
desc: an attempt to read any sensitive file (e.g. files containing user/password/authentication information) by a trusted program after startup. Trusted programs might read these files at startup to load initial state, but not afterwards.
|
||||
condition: sensitive_files and open_read and server_procs and not proc_is_new and proc.name!="sshd"
|
||||
output: >
|
||||
Sensitive file opened for reading by trusted program after startup (user=%user.name
|
||||
command=%proc.cmdline parent=%proc.pname file=%fd.name parent=%proc.pname gparent=%proc.aname[2])
|
||||
output: "Sensitive file opened for reading by trusted program after startup (user=%user.name command=%proc.cmdline file=%fd.name)"
|
||||
priority: WARNING
|
||||
tags: [filesystem]
|
||||
|
||||
- list: read_sensitive_file_binaries
|
||||
items: [
|
||||
iptables, ps, lsb_release, check-new-relea, dumpe2fs, accounts-daemon, sshd,
|
||||
vsftpd, systemd, mysql_install_d, psql
|
||||
]
|
||||
|
||||
# Add conditions to this macro (probably in a separate file,
|
||||
# overwriting this macro) to allow for specific combinations of
|
||||
# programs accessing sensitive files.
|
||||
# fluentd_writing_conf_files is a good example to follow, as it
|
||||
# specifies both the program doing the writing as well as the specific
|
||||
# files it is allowed to modify.
|
||||
#
|
||||
# In this file, it just takes one of the macros in the base rule
|
||||
# and repeats it.
|
||||
|
||||
- macro: user_read_sensitive_file_conditions
|
||||
condition: cmp_cp_by_passwd
|
||||
items: [iptables, ps, lsb_release, check-new-relea, dumpe2fs, accounts-daemon, sshd, vsftpd, systemd]
|
||||
|
||||
- rule: Read sensitive file untrusted
|
||||
desc: >
|
||||
an attempt to read any sensitive file (e.g. files containing user/password/authentication
|
||||
information). Exceptions are made for known trusted programs.
|
||||
desc: an attempt to read any sensitive file (e.g. files containing user/password/authentication information). Exceptions are made for known trusted programs.
|
||||
condition: >
|
||||
sensitive_files and open_read
|
||||
and not proc.name in (user_mgmt_binaries, userexec_binaries, package_mgmt_binaries,
|
||||
cron_binaries, read_sensitive_file_binaries, shell_binaries, hids_binaries,
|
||||
vpn_binaries, sendmail_config_binaries, nomachine_binaries, sshkit_script_binaries)
|
||||
and not proc.name in (user_mgmt_binaries, userexec_binaries, package_mgmt_binaries, cron_binaries, read_sensitive_file_binaries, shell_binaries, hids_binaries)
|
||||
and not cmp_cp_by_passwd
|
||||
and not ansible_running_python
|
||||
and not proc.cmdline contains /usr/bin/mandb
|
||||
and not run_by_qualys
|
||||
and not run_by_chef
|
||||
and not user_read_sensitive_file_conditions
|
||||
output: >
|
||||
Sensitive file opened for reading by non-trusted program (user=%user.name name=%proc.name
|
||||
command=%proc.cmdline file=%fd.name parent=%proc.pname gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4])
|
||||
output: "Sensitive file opened for reading by non-trusted program (user=%user.name name=%proc.name command=%proc.cmdline file=%fd.name)"
|
||||
priority: WARNING
|
||||
tags: [filesystem]
|
||||
|
||||
# Only let rpm-related programs write to the rpm database
|
||||
- rule: Write below rpm database
|
||||
desc: an attempt to write to the rpm database by any non-rpm related program
|
||||
condition: fd.name startswith /var/lib/rpm and open_write and not rpm_procs and not ansible_running_python
|
||||
condition: fd.name startswith /var/lib/rpm and open_write and not proc.name in (dnf,rpm,rpmkey,yum) and not ansible_running_python
|
||||
output: "Rpm database opened for writing by a non-rpm program (command=%proc.cmdline file=%fd.name)"
|
||||
priority: ERROR
|
||||
tags: [filesystem, software_mgmt]
|
||||
|
||||
- rule: DB program spawned process
|
||||
desc: >
|
||||
a database-server related program spawned a new process other than itself.
|
||||
This shouldn\'t occur and is a follow on from some SQL injection attacks.
|
||||
desc: a database-server related program spawned a new process other than itself. This shouldn\'t occur and is a follow on from some SQL injection attacks.
|
||||
condition: proc.pname in (db_server_binaries) and spawned_process and not proc.name in (db_server_binaries)
|
||||
output: >
|
||||
Database-related program spawned process other than itself (user=%user.name
|
||||
program=%proc.cmdline parent=%proc.pname)
|
||||
output: "Database-related program spawned process other than itself (user=%user.name program=%proc.cmdline parent=%proc.pname)"
|
||||
priority: NOTICE
|
||||
tags: [process, database]
|
||||
|
||||
- rule: Modify binary dirs
|
||||
desc: an attempt to modify any file below a set of binary directories.
|
||||
condition: bin_dir_rename and modify and not package_mgmt_procs
|
||||
output: >
|
||||
File below known binary directory renamed/removed (user=%user.name command=%proc.cmdline
|
||||
operation=%evt.type file=%fd.name %evt.args)
|
||||
output: "File below known binary directory renamed/removed (user=%user.name command=%proc.cmdline operation=%evt.type file=%fd.name %evt.args)"
|
||||
priority: ERROR
|
||||
tags: [filesystem]
|
||||
|
||||
- rule: Mkdir binary dirs
|
||||
desc: an attempt to create a directory below a set of binary directories.
|
||||
condition: mkdir and bin_dir_mkdir and not package_mgmt_procs
|
||||
output: >
|
||||
Directory below known binary directory created (user=%user.name
|
||||
command=%proc.cmdline directory=%evt.arg.path)
|
||||
output: "Directory below known binary directory created (user=%user.name command=%proc.cmdline directory=%evt.arg.path)"
|
||||
priority: ERROR
|
||||
tags: [filesystem]
|
||||
|
||||
@@ -609,43 +348,32 @@
|
||||
|
||||
# Temporarily disabling this rule as it's tripping over https://github.com/draios/sysdig/issues/598
|
||||
# - rule: Syscall returns eaccess
|
||||
# desc: >
|
||||
# any system call that returns EACCESS. This is not always a strong
|
||||
# indication of a problem, hence the INFO priority.
|
||||
# desc: any system call that returns EACCESS. This is not always a strong indication of a problem, hence the INFO priority.
|
||||
# condition: evt.res = EACCESS
|
||||
# output: >
|
||||
# System call returned EACCESS (user=%user.name command=%proc.cmdline
|
||||
# syscall=%evt.type args=%evt.args)
|
||||
# output: "System call returned EACCESS (user=%user.name command=%proc.cmdline syscall=%evt.type args=%evt.args)"
|
||||
# priority: INFO
|
||||
|
||||
- rule: Change thread namespace
|
||||
desc: >
|
||||
an attempt to change a program/thread\'s namespace (commonly done
|
||||
as a part of creating a container) by calling setns.
|
||||
desc: an attempt to change a program/thread\'s namespace (commonly done as a part of creating a container) by calling setns.
|
||||
condition: >
|
||||
evt.type = setns
|
||||
and not proc.name in (docker_binaries, k8s_binaries, lxd_binaries, sysdigcloud_binaries, sysdig, nsenter)
|
||||
and not proc.name startswith "runc:"
|
||||
and not proc.pname in (sysdigcloud_binaries)
|
||||
and not java_running_sdjagent
|
||||
output: >
|
||||
Namespace change (setns) by unexpected program (user=%user.name command=%proc.cmdline
|
||||
parent=%proc.pname %container.info)
|
||||
output: "Namespace change (setns) by unexpected program (user=%user.name command=%proc.cmdline parent=%proc.pname %container.info)"
|
||||
priority: NOTICE
|
||||
tags: [process]
|
||||
|
||||
- list: known_shell_spawn_binaries
|
||||
items: [
|
||||
sshd, sudo, su, tmux, screen, emacs, systemd, login, flock, fbash,
|
||||
nginx, monit, supervisord, dragent, aws, awslogs, initdb, docker-compose,
|
||||
configure, awk, falco, fail2ban-server, fleetctl,
|
||||
nginx, monit, supervisord, dragent, aws, initdb, docker-compose,
|
||||
make, configure, awk, falco, fail2ban-server, fleetctl,
|
||||
logrotate, ansible, less, adduser, pycompile, py3compile,
|
||||
pyclean, py3clean, pip, pip2, ansible-playboo, man-db,
|
||||
init, pluto, mkinitramfs, unattended-upgr, watch, sysdig,
|
||||
landscape-sysin, nessusd, PM2, syslog-summary, erl_child_setup,
|
||||
npm, cloud-init, toybox, ceph, hhvm, certbot, mysql_install_d,
|
||||
serf, a2enmod, runsv, supervisord, varnishd, authconfig, tini,
|
||||
timeout, updatedb.findut, mysql_ssl_rsa_s, adclient, systemd-udevd
|
||||
landscape-sysin, nessusd, PM2, syslog-summary, erl_child_setup
|
||||
]
|
||||
|
||||
- rule: Run shell untrusted
|
||||
@@ -654,33 +382,14 @@
|
||||
spawned_process and not container
|
||||
and shell_procs
|
||||
and proc.pname exists
|
||||
and not proc.pname in (cron_binaries, shell_binaries, make_binaries, known_shell_spawn_binaries, docker_binaries,
|
||||
and not proc.pname in (cron_binaries, shell_binaries, known_shell_spawn_binaries, docker_binaries,
|
||||
k8s_binaries, package_mgmt_binaries, aide_wrapper_binaries, nids_binaries,
|
||||
monitoring_binaries, gitlab_binaries, mesos_slave_binaries,
|
||||
keepalived_binaries,
|
||||
needrestart_binaries, phusion_passenger_binaries, chef_binaries, nomachine_binaries,
|
||||
x2go_binaries)
|
||||
monitoring_binaries)
|
||||
and not parent_ansible_running_python
|
||||
and not parent_bro_running_python
|
||||
and not parent_python_running_denyhosts
|
||||
and not parent_python_running_sdchecks
|
||||
and not parent_linux_image_upgrade_script
|
||||
and not parent_java_running_jenkins
|
||||
and not jenkins_script_sh
|
||||
and not parent_java_running_echo
|
||||
and not parent_scripting_running_builds
|
||||
and not parent_Xvfb_running_xkbcomp
|
||||
and not parent_nginx_running_serf
|
||||
and not parent_node_running_npm
|
||||
and not parent_java_running_sbt
|
||||
and not run_by_chef
|
||||
and not run_by_puppet
|
||||
and not run_by_adclient
|
||||
and not run_by_centrify
|
||||
output: >
|
||||
Shell spawned by untrusted binary (user=%user.name shell=%proc.name parent=%proc.pname
|
||||
cmdline=%proc.cmdline pcmdline=%proc.pcmdline gparent=%proc.aname[2] ggparent=%proc.aname[3]
|
||||
gggparent=%proc.aname[4] ggggparent=%proc.aname[5])
|
||||
output: "Shell spawned by untrusted binary (user=%user.name shell=%proc.name parent=%proc.pname cmdline=%proc.cmdline pcmdline=%proc.pcmdline)"
|
||||
priority: DEBUG
|
||||
tags: [host, shell]
|
||||
|
||||
@@ -688,51 +397,25 @@
|
||||
condition: (container.image startswith sysdig/agent or
|
||||
(container.image startswith sysdig/falco and
|
||||
not container.image startswith sysdig/falco-event-generator) or
|
||||
container.image startswith quay.io/sysdig or
|
||||
container.image startswith sysdig/sysdig or
|
||||
container.image startswith gcr.io/google_containers/hyperkube or
|
||||
container.image startswith quay.io/coreos/flannel or
|
||||
container.image startswith gcr.io/google_containers/kube-proxy or
|
||||
container.image startswith calico/node)
|
||||
container.image startswith gcr.io/google_containers/kube-proxy)
|
||||
|
||||
# These containers are ones that are known to spawn lots of
|
||||
# shells. Generally, they are for systems where the container is used
|
||||
# as a packaging mechanism more than for a dedicated microservice.
|
||||
- macro: shell_spawning_containers
|
||||
condition: (container.image startswith jenkins or
|
||||
container.image startswith gitlab/gitlab-ce or
|
||||
container.image startswith gitlab/gitlab-ee)
|
||||
|
||||
- rule: Launch Privileged Container
|
||||
desc: Detect the initial process started in a privileged container. Exceptions are made for known trusted images.
|
||||
condition: evt.type=execve and proc.vpid=1 and container and container.privileged=true and not trusted_containers
|
||||
output: Privileged container started (user=%user.name command=%proc.cmdline %container.info)
|
||||
- rule: File Open by Privileged Container
|
||||
desc: Any open by a privileged container. Exceptions are made for known trusted images.
|
||||
condition: (open_read or open_write) and container and container.privileged=true and not trusted_containers
|
||||
output: File opened for read/write by privileged container (user=%user.name command=%proc.cmdline %container.info file=%fd.name)
|
||||
priority: INFO
|
||||
tags: [container, cis]
|
||||
|
||||
- macro: sensitive_mount
|
||||
condition: (container.mount.dest[/proc*] != "N/A")
|
||||
|
||||
# The steps libcontainer performs to set up the root program for a container are:
|
||||
# - clone + exec self to a program runc:[0:PARENT]
|
||||
# - clone a program runc:[1:CHILD] which sets up all the namespaces
|
||||
# - clone a second program runc:[2:INIT] + exec to the root program.
|
||||
# The parent of runc:[2:INIT] is runc:0:PARENT]
|
||||
# As soon as 1:CHILD is created, 0:PARENT exits, so there's a race
|
||||
# where at the time 2:INIT execs the root program, 0:PARENT might have
|
||||
# already exited, or might still be around. So we handle both.
|
||||
# We also let runc:[1:CHILD] count as the parent process, which can occur
|
||||
# when we lose events and lose track of state.
|
||||
|
||||
- macro: container_entrypoint
|
||||
condition: (not proc.pname exists or proc.pname in (runc:[0:PARENT], runc:[1:CHILD], docker-runc))
|
||||
|
||||
- rule: Launch Sensitive Mount Container
|
||||
desc: >
|
||||
Detect the initial process started by a container that has a mount from a sensitive host directory
|
||||
(i.e. /proc). Exceptions are made for known trusted images.
|
||||
condition: evt.type=execve and proc.vpid=1 and container and sensitive_mount and not trusted_containers
|
||||
output: Container with sensitive mount started (user=%user.name command=%proc.cmdline %container.info)
|
||||
- rule: Sensitive Mount by Container
|
||||
desc: Any open by a container that has a mount from a sensitive host directory (i.e. /proc). Exceptions are made for known trusted images.
|
||||
condition: (open_read or open_write) and container and sensitive_mount and not trusted_containers
|
||||
output: File opened for read/write by container mounting sensitive directory (user=%user.name command=%proc.cmdline %container.info file=%fd.name)
|
||||
priority: INFO
|
||||
tags: [container, cis]
|
||||
|
||||
@@ -753,119 +436,28 @@
|
||||
condition: >
|
||||
spawned_process and container
|
||||
and shell_procs and proc.tty != 0
|
||||
output: >
|
||||
A shell was spawned in a container with an attached terminal (user=%user.name %container.info
|
||||
shell=%proc.name parent=%proc.pname cmdline=%proc.cmdline terminal=%proc.tty)
|
||||
output: "A shell was spawned in a container with an attached terminal (user=%user.name %container.info shell=%proc.name parent=%proc.pname cmdline=%proc.cmdline terminal=%proc.tty)"
|
||||
priority: NOTICE
|
||||
tags: [container, shell]
|
||||
|
||||
# For some container types (mesos), there isn't a container image to
|
||||
# work with, and the container name is autogenerated, so there isn't
|
||||
# any stable aspect of the software to work with. In this case, we
|
||||
# fall back to allowing certain command lines.
|
||||
- list: known_container_shell_spawn_cmdlines
|
||||
items: [
|
||||
'"bash -c curl -f localhost:$API_PORT/admin/healthcheck"',
|
||||
'"sh -c curl http://localhost:6060/debug/vars>/dev/null "',
|
||||
'"sh -c curl http://localhost:6060/debug/vars>/dev/null"',
|
||||
'"sh -c curl http://localhost:6060/debug/vars>/dev/null"',
|
||||
'"sh -c curl http://localhost:6060/debug/vars>/dev/null "',
|
||||
'"sh -c pgrep java && exit 0 || exit 1 "',
|
||||
'"sh -c uname -p 2> /dev/null"',
|
||||
'"sh -c uname -s 2>&1"',
|
||||
'"sh -c uname -r 2>&1"',
|
||||
'"sh -c uname -v 2>&1"',
|
||||
'"sh -c uname -a 2>&1"',
|
||||
'"sh -c ruby -v 2>&1"',
|
||||
'"sh -c echo healthy "',
|
||||
'"sh -c echo alive "',
|
||||
'"sh -c getconf CLK_TCK"',
|
||||
'"sh -c getconf PAGESIZE"',
|
||||
'"sh -c LC_ALL=C LANG=C /sbin/ldconfig -p 2>/dev/null"',
|
||||
'"sh -c /sbin/ldconfig -p 2>/dev/null"',
|
||||
'"sh -c stty -a 2>/dev/null"',
|
||||
'"sh -c node index.js"',
|
||||
'"sh -c node index"',
|
||||
'"sh -c node ./src/start.js"',
|
||||
'"sh -c node app.js"',
|
||||
'"sh -c node -e \"require(''nan'')\")"',
|
||||
'"sh -c node $NODE_DEBUG_OPTION index.js "',
|
||||
'"sh -c crontab -l 2"',
|
||||
'"sh -c lsb_release -a"',
|
||||
'"sh -c whoami"',
|
||||
'"sh -c node_modules/.bin/bower-installer"'
|
||||
]
|
||||
|
||||
# This list allows for easy additions to the set of commands allowed
|
||||
# to run shells in containers without having to without having to copy
|
||||
# and override the entire run shell in container macro. Once
|
||||
# https://github.com/draios/falco/issues/255 is fixed this will be a
|
||||
# bit easier, as someone could append of any of the existing lists.
|
||||
- list: user_known_container_shell_spawn_binaries
|
||||
items: []
|
||||
|
||||
# This macro allows for easy additions to the set of commands allowed
|
||||
# to run shells in containers without having to override the entire
|
||||
# rule. Its default value is an expression that always is false, which
|
||||
# becomes true when the "not ..." in the rule is applied.
|
||||
- macro: user_shell_container_exclusions
|
||||
condition: (evt.num=0)
|
||||
|
||||
# Temporarily adding as an example
|
||||
- macro: node_running_edi_dynamodb
|
||||
condition: >
|
||||
(proc.pname=node and (proc.pcmdline contains /var/www/edi/process.js or
|
||||
proc.pcmdline contains "sh -c /var/www/edi/bin/sftp.sh"))
|
||||
|
||||
- rule: Run shell in container
|
||||
desc: a shell was spawned by a non-shell program in a container. Container entrypoints are excluded.
|
||||
condition: >
|
||||
spawned_process and container
|
||||
and shell_procs
|
||||
and not container_entrypoint
|
||||
and not proc.pname in (shell_binaries, make_binaries, docker_binaries, k8s_binaries, package_mgmt_binaries,
|
||||
lxd_binaries, mesos_slave_binaries, aide_wrapper_binaries, nids_binaries,
|
||||
user_known_container_shell_spawn_binaries,
|
||||
needrestart_binaries,
|
||||
phusion_passenger_binaries,
|
||||
chef_binaries,
|
||||
nomachine_binaries,
|
||||
x2go_binaries,
|
||||
xray_rabbitmq_binaries,
|
||||
monitoring_binaries, gitlab_binaries, initdb, pg_ctl, awk, falco, cron,
|
||||
erl_child_setup, ceph, PM2, pycompile, py3compile, hhvm, npm, mysql_install_d, serf,
|
||||
runsv, supervisord, varnishd, crond, logrotate, timeout, tini,
|
||||
xrdb, xfce4-session, weave, mysql_ssl_rsa_s, logdna-agent, bundle, configure)
|
||||
and proc.pname exists
|
||||
and not proc.pname in (shell_binaries, docker_binaries, k8s_binaries, lxd_binaries, aide_wrapper_binaries, nids_binaries,
|
||||
monitoring_binaries, gitlab_binaries, initdb, pg_ctl, awk, falco, cron, erl_child_setup)
|
||||
and not trusted_containers
|
||||
and not shell_spawning_containers
|
||||
and not parent_java_running_echo
|
||||
and not parent_scripting_running_builds
|
||||
and not parent_Xvfb_running_xkbcomp
|
||||
and not mysql_image_running_healthcheck
|
||||
and not parent_nginx_running_serf
|
||||
and not proc.cmdline in (known_container_shell_spawn_cmdlines)
|
||||
and not parent_node_running_npm
|
||||
and not user_shell_container_exclusions
|
||||
and not node_running_edi_dynamodb
|
||||
and not run_by_h2o
|
||||
and not run_by_passenger_agent
|
||||
and not parent_java_running_jenkins
|
||||
and not jenkins_script_sh
|
||||
and not bundle_running_ruby
|
||||
output: >
|
||||
Shell spawned in a container other than entrypoint (user=%user.name %container.info image=%container.image
|
||||
shell=%proc.name pcmdline=%proc.pcmdline cmdline=%proc.cmdline parent=%proc.pname gparent=%proc.aname[2] ggparent=%proc.aname[3])
|
||||
priority: DEBUG
|
||||
output: "Shell spawned in a container other than entrypoint (user=%user.name %container.info shell=%proc.name parent=%proc.pname cmdline=%proc.cmdline)"
|
||||
priority: NOTICE
|
||||
tags: [container, shell]
|
||||
|
||||
# sockfamily ip is to exclude certain processes (like 'groups') that communicate on unix-domain sockets
|
||||
# systemd can listen on ports to launch things like sshd on demand
|
||||
- rule: System procs network activity
|
||||
desc: any network activity performed by system binaries that are not expected to send or receive any network traffic
|
||||
condition: (fd.sockfamily = ip and system_procs) and (inbound or outbound) and not proc.name=systemd
|
||||
output: >
|
||||
Known system binary sent/received network traffic
|
||||
(user=%user.name command=%proc.cmdline connection=%fd.name)
|
||||
condition: (fd.sockfamily = ip and system_procs) and (inbound or outbound)
|
||||
output: "Known system binary sent/received network traffic (user=%user.name command=%proc.cmdline connection=%fd.name)"
|
||||
priority: NOTICE
|
||||
tags: [network]
|
||||
|
||||
@@ -878,68 +470,25 @@
|
||||
# output: "sshd sent error message to syslog (error=%evt.buffer)"
|
||||
# priority: WARNING
|
||||
|
||||
- macro: somebody_becoming_themself
|
||||
condition: ((user.name=nobody and evt.arg.uid=nobody) or
|
||||
(user.name=www-data and evt.arg.uid=www-data) or
|
||||
(user.name=_apt and evt.arg.uid=_apt) or
|
||||
(user.name=postfix and evt.arg.uid=postfix) or
|
||||
(user.name=pki-agent and evt.arg.uid=pki-agent) or
|
||||
(user.name=pki-acme and evt.arg.uid=pki-acme) or
|
||||
(user.name=nfsnobody and evt.arg.uid=nfsnobody))
|
||||
|
||||
# In containers, the user name might be for a uid that exists in the
|
||||
# container but not on the host. (See
|
||||
# https://github.com/draios/sysdig/issues/954). So in that case, allow
|
||||
# a setuid.
|
||||
|
||||
- macro: unknown_user_in_container
|
||||
condition: (user.name="<NA>" and container)
|
||||
|
||||
# sshd, mail programs attempt to setuid to root even when running as non-root. Excluding here to avoid meaningless FPs
|
||||
- rule: Non sudo setuid
|
||||
desc: >
|
||||
an attempt to change users by calling setuid. sudo/su are excluded. users "root" and "nobody"
|
||||
suing to itself are also excluded, as setuid calls typically involve dropping privileges.
|
||||
condition: >
|
||||
evt.type=setuid and evt.dir=>
|
||||
and not unknown_user_in_container
|
||||
and not user.name=root and not somebody_becoming_themself
|
||||
and not proc.name in (known_setuid_binaries, userexec_binaries, mail_binaries, docker_binaries, nomachine_binaries)
|
||||
and not java_running_sdjagent
|
||||
output: >
|
||||
Unexpected setuid call by non-sudo, non-root program (user=%user.name parent=%proc.pname
|
||||
command=%proc.cmdline uid=%evt.arg.uid)
|
||||
desc: an attempt to change users by calling setuid. sudo/su are excluded. user "root" is also excluded, as setuid calls typically involve dropping privileges.
|
||||
condition: evt.type=setuid and evt.dir=> and not user.name=root and not proc.name in (userexec_binaries, mail_binaries, sshd, dbus-daemon-lau, ping, ping6, critical-stack-)
|
||||
output: "Unexpected setuid call by non-sudo, non-root program (user=%user.name parent=%proc.pname command=%proc.cmdline uid=%evt.arg.uid)"
|
||||
priority: NOTICE
|
||||
tags: [users]
|
||||
|
||||
- rule: User mgmt binaries
|
||||
desc: >
|
||||
activity by any programs that can manage users, passwords, or permissions. sudo and su are excluded.
|
||||
Activity in containers is also excluded--some containers create custom users on top
|
||||
of a base linux distribution at startup.
|
||||
Some innocuous commandlines that don't actually change anything are excluded.
|
||||
condition: >
|
||||
spawned_process and proc.name in (user_mgmt_binaries) and
|
||||
not proc.name in (su, sudo, lastlog) and not container and
|
||||
not proc.pname in (cron_binaries, systemd, run-parts) and
|
||||
not proc.cmdline startswith "passwd -S" and
|
||||
not proc.cmdline startswith "useradd -D" and
|
||||
not proc.cmdline startswith "systemd --version" and
|
||||
not run_by_qualys
|
||||
output: >
|
||||
User management binary command run outside of container
|
||||
(user=%user.name command=%proc.cmdline parent=%proc.pname gparent=%proc.aname[2] ggparent=%proc.aname[3] gggparent=%proc.aname[4])
|
||||
desc: activity by any programs that can manage users, passwords, or permissions. sudo and su are excluded. Activity in containers is also excluded--some containers create custom users on top of a base linux distribution at startup.
|
||||
condition: spawned_process and proc.name in (user_mgmt_binaries) and not proc.name in (su, sudo) and not container and not proc.pname in (cron_binaries, systemd, run-parts)
|
||||
output: "User management binary command run outside of container (user=%user.name command=%proc.cmdline parent=%proc.pname)"
|
||||
priority: NOTICE
|
||||
tags: [host, users]
|
||||
|
||||
- list: allowed_dev_files
|
||||
items: [
|
||||
/dev/null, /dev/stdin, /dev/stdout, /dev/stderr,
|
||||
/dev/random, /dev/urandom, /dev/console, /dev/kmsg
|
||||
]
|
||||
items: [/dev/null, /dev/stdin, /dev/stdout, /dev/stderr, /dev/random, /dev/urandom, /dev/console]
|
||||
|
||||
# (we may need to add additional checks against false positives, see:
|
||||
# https://bugs.launchpad.net/ubuntu/+source/rkhunter/+bug/86153)
|
||||
# (we may need to add additional checks against false positives, see: https://bugs.launchpad.net/ubuntu/+source/rkhunter/+bug/86153)
|
||||
- rule: Create files below dev
|
||||
desc: creating any files below /dev other than known programs that manage devices. Some rootkits hide files in /dev.
|
||||
condition: >
|
||||
@@ -970,9 +519,7 @@
|
||||
- rule: Installer bash non https connection
|
||||
desc: an attempt by a program in a pipe installer session to make an outgoing connection on a non-http(s) port
|
||||
condition: proc.sname=fbash and outbound and not fd.sport in (80, 443, 53)
|
||||
output: >
|
||||
Outbound connection on non-http(s) port by a process in a fbash session
|
||||
(command=%proc.cmdline connection=%fd.name)
|
||||
output: "Outbound connection on non-http(s) port by a process in a fbash session (command=%proc.cmdline connection=%fd.name)"
|
||||
priority: NOTICE
|
||||
tags: [network]
|
||||
|
||||
@@ -1066,10 +613,7 @@
|
||||
- macro: cassandra_jmx_port
|
||||
condition: fd.sport=7199
|
||||
- macro: cassandra_port
|
||||
condition: >
|
||||
cassandra_thrift_client_port or
|
||||
cassandra_cql_port or cassandra_cluster_port or
|
||||
cassandra_ssl_cluster_port or cassandra_jmx_port
|
||||
condition: cassandra_thrift_client_port or cassandra_cql_port or cassandra_cluster_port or cassandra_ssl_cluster_port or cassandra_jmx_port
|
||||
|
||||
# - rule: Cassandra unexpected network inbound traffic
|
||||
# desc: inbound network traffic to cassandra on a port other than the standard ports
|
||||
@@ -1155,9 +699,7 @@
|
||||
|
||||
# - rule: Mongodb unexpected network inbound traffic
|
||||
# desc: inbound network traffic to mongodb on a port other than the standard ports
|
||||
# condition: >
|
||||
# user.name = mongodb and inbound and not (mongodb_server_port or
|
||||
# mongodb_shardserver_port or mongodb_configserver_port or mongodb_webserver_port)
|
||||
# condition: user.name = mongodb and inbound and not (mongodb_server_port or mongodb_shardserver_port or mongodb_configserver_port or mongodb_webserver_port)
|
||||
# output: "Inbound network traffic to MongoDB on unexpected port (connection=%fd.name)"
|
||||
# priority: WARNING
|
||||
|
||||
|
||||
@@ -7,8 +7,6 @@ file(COPY "${PROJECT_SOURCE_DIR}/scripts/debian/falco"
|
||||
file(COPY "${PROJECT_SOURCE_DIR}/scripts/rpm/falco"
|
||||
DESTINATION "${PROJECT_BINARY_DIR}/scripts/rpm")
|
||||
|
||||
if(CMAKE_SYSTEM_NAME MATCHES "Linux")
|
||||
install(PROGRAMS ${SYSDIG_DIR}/scripts/sysdig-probe-loader
|
||||
DESTINATION ${FALCO_BIN_DIR}
|
||||
RENAME falco-probe-loader)
|
||||
endif()
|
||||
install(PROGRAMS ${SYSDIG_DIR}/scripts/sysdig-probe-loader
|
||||
DESTINATION bin
|
||||
RENAME falco-probe-loader)
|
||||
|
||||
@@ -30,7 +30,6 @@ class FalcoTest(Test):
|
||||
self.trace_file = os.path.join(self.basedir, self.trace_file)
|
||||
|
||||
self.json_output = self.params.get('json_output', '*', default=False)
|
||||
self.priority = self.params.get('priority', '*', default='debug')
|
||||
self.rules_file = self.params.get('rules_file', '*', default=os.path.join(self.basedir, '../rules/falco_rules.yaml'))
|
||||
|
||||
if not isinstance(self.rules_file, list):
|
||||
@@ -296,7 +295,7 @@ class FalcoTest(Test):
|
||||
res = process.run("docker rm falco-test")
|
||||
|
||||
elif self.package.endswith(".deb"):
|
||||
cmdline = "dpkg --purge falco"
|
||||
cmdline = "dpkg -r falco"
|
||||
self.log.debug("Uninstalling debian package via \"{}\"".format(cmdline))
|
||||
res = process.run(cmdline, timeout=120, sudo=True)
|
||||
|
||||
@@ -348,8 +347,8 @@ class FalcoTest(Test):
|
||||
trace_arg = "-e {}".format(self.trace_file)
|
||||
|
||||
# Run falco
|
||||
cmd = '{} {} {} -c {} {} -o json_output={} -o priority={} -v'.format(
|
||||
self.falco_binary_path, self.rules_args, self.disabled_args, self.conf_file, trace_arg, self.json_output, self.priority)
|
||||
cmd = '{} {} {} -c {} {} -o json_output={} -v'.format(
|
||||
self.falco_binary_path, self.rules_args, self.disabled_args, self.conf_file, trace_arg, self.json_output)
|
||||
|
||||
for tag in self.disable_tags:
|
||||
cmd += ' -T {}'.format(tag)
|
||||
|
||||
@@ -129,21 +129,6 @@ trace_files: !mux
|
||||
- rules/double_rule.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
multiple_rules_suppress_info:
|
||||
detect: True
|
||||
detect_level:
|
||||
- WARNING
|
||||
- ERROR
|
||||
priority: WARNING
|
||||
detect_counts:
|
||||
- open_from_cat: 8
|
||||
- exec_from_cat: 1
|
||||
- access_from_cat: 0
|
||||
rules_file:
|
||||
- rules/single_rule.yaml
|
||||
- rules/double_rule.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
multiple_rules_overriding:
|
||||
detect: False
|
||||
rules_file:
|
||||
@@ -172,68 +157,6 @@ trace_files: !mux
|
||||
- rules/override_nested_list.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_substring:
|
||||
detect: False
|
||||
rules_file:
|
||||
- rules/list_substring.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_sub_front:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/list_sub_front.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_sub_mid:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/list_sub_mid.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_sub_end:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/list_sub_end.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_sub_bare:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/list_sub_bare.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_sub_whitespace:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/list_sub_whitespace.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_order:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/list_order.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
macro_order:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/macro_order.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
rule_order:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/rule_order.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
invalid_rule_output:
|
||||
exit_status: 1
|
||||
stderr_contains: "Runtime error: Error loading rules:.* Invalid output format 'An open was seen %not_a_real_field': 'invalid formatting token not_a_real_field'. Exiting."
|
||||
@@ -594,64 +517,3 @@ trace_files: !mux
|
||||
- open_11: 1
|
||||
- open_12: 0
|
||||
- open_13: 0
|
||||
|
||||
list_append_failure:
|
||||
exit_status: 1
|
||||
stderr_contains: "List my_list has 'append' key but no list by that name already exists. Exiting"
|
||||
rules_file:
|
||||
- rules/list_append_failure.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_append:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/list_append.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
list_append_false:
|
||||
detect: False
|
||||
rules_file:
|
||||
- rules/list_append_false.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
macro_append_failure:
|
||||
exit_status: 1
|
||||
stderr_contains: "Macro my_macro has 'append' key but no macro by that name already exists. Exiting"
|
||||
rules_file:
|
||||
- rules/macro_append_failure.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
macro_append:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/macro_append.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
macro_append_false:
|
||||
detect: False
|
||||
rules_file:
|
||||
- rules/macro_append_false.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
rule_append_failure:
|
||||
exit_status: 1
|
||||
stderr_contains: "Rule my_rule has 'append' key but no rule by that name already exists. Exiting"
|
||||
rules_file:
|
||||
- rules/rule_append_failure.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
rule_append:
|
||||
detect: True
|
||||
detect_level: WARNING
|
||||
rules_file:
|
||||
- rules/rule_append.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
rule_append_false:
|
||||
detect: False
|
||||
rules_file:
|
||||
- rules/rule_append_false.yaml
|
||||
trace_file: trace_files/cat_write.scap
|
||||
|
||||
|
||||
@@ -17,14 +17,14 @@ traces: !mux
|
||||
detect: True
|
||||
detect_level: INFO
|
||||
detect_counts:
|
||||
- "Launch Privileged Container": 1
|
||||
- "File Open by Privileged Container": 19
|
||||
|
||||
container-sensitive-mount:
|
||||
trace_file: traces-positive/container-sensitive-mount.scap
|
||||
detect: True
|
||||
detect_level: INFO
|
||||
detect_counts:
|
||||
- "Launch Sensitive Mount Container": 1
|
||||
- "Sensitive Mount by Container": 19
|
||||
|
||||
create-files-below-dev:
|
||||
trace_file: traces-positive/create-files-below-dev.scap
|
||||
@@ -149,7 +149,7 @@ traces: !mux
|
||||
shell-in-container:
|
||||
trace_file: traces-positive/shell-in-container.scap
|
||||
detect: True
|
||||
detect_level: DEBUG
|
||||
detect_level: NOTICE
|
||||
detect_counts:
|
||||
- "Run shell in container": 1
|
||||
|
||||
|
||||
@@ -1,12 +0,0 @@
|
||||
- list: my_list
|
||||
items: [not-cat]
|
||||
|
||||
- list: my_list
|
||||
append: true
|
||||
items: [cat]
|
||||
|
||||
- rule: Open From Cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and proc.name in (my_list)
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,3 +0,0 @@
|
||||
- list: my_list
|
||||
items: [not-cat]
|
||||
append: true
|
||||
@@ -1,12 +0,0 @@
|
||||
- list: my_list
|
||||
items: [cat]
|
||||
|
||||
- list: my_list
|
||||
append: false
|
||||
items: [not-cat]
|
||||
|
||||
- rule: Open From Cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and proc.name in (my_list)
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,14 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [not_cat]
|
||||
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name in (cat_binaries)
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,11 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name=cat_binaries
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,11 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name in (ls, cat_binaries)
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,11 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name in (cat_binaries, ps)
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,11 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name in (ls, cat_binaries, ps)
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,11 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name= cat_binaries or proc.name=nopey
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,8 +0,0 @@
|
||||
- list: my_list
|
||||
items: ['"one string"']
|
||||
|
||||
- rule: my_rule
|
||||
desc: my description
|
||||
condition: evt.type=open and fd.name in (file_my_list)
|
||||
output: my output
|
||||
priority: INFO
|
||||
@@ -1,12 +0,0 @@
|
||||
- macro: my_macro
|
||||
condition: proc.name=not-cat
|
||||
|
||||
- macro: my_macro
|
||||
append: true
|
||||
condition: or proc.name=cat
|
||||
|
||||
- rule: Open From Cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and my_macro
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,3 +0,0 @@
|
||||
- macro: my_macro
|
||||
condition: proc.name=not-cat
|
||||
append: true
|
||||
@@ -1,12 +0,0 @@
|
||||
- macro: my_macro
|
||||
condition: proc.name=cat
|
||||
|
||||
- macro: my_macro
|
||||
append: false
|
||||
condition: proc.name=not-cat
|
||||
|
||||
- rule: Open From Cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and my_macro
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,14 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name in (not_cat)
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name in (cat_binaries)
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -1,9 +0,0 @@
|
||||
- rule: my_rule
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and fd.name=not-a-real-file
|
||||
output: "An open of /dev/null was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
|
||||
- rule: my_rule
|
||||
append: true
|
||||
condition: or fd.name=/dev/null
|
||||
@@ -1,3 +0,0 @@
|
||||
- rule: my_rule
|
||||
condition: evt.type=open
|
||||
append: true
|
||||
@@ -1,9 +0,0 @@
|
||||
- rule: my_rule
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and fd.name=/dev/null
|
||||
output: "An open of /dev/null was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
|
||||
- rule: my_rule
|
||||
append: true
|
||||
condition: and fd.name=not-a-real-file
|
||||
@@ -1,17 +0,0 @@
|
||||
- list: cat_binaries
|
||||
items: [cat]
|
||||
|
||||
- macro: is_cat
|
||||
condition: proc.name in (cat_binaries)
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and proc.name=not_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
|
||||
- rule: open_from_cat
|
||||
desc: A process named cat does an open
|
||||
condition: evt.type=open and is_cat
|
||||
output: "An open was seen (command=%proc.cmdline)"
|
||||
priority: WARNING
|
||||
@@ -27,3 +27,5 @@ install(DIRECTORY lua
|
||||
DESTINATION "${FALCO_SHARE_DIR}"
|
||||
FILES_MATCHING PATTERN *.lua)
|
||||
endif()
|
||||
|
||||
add_subdirectory("${PROJECT_SOURCE_DIR}/../falco/rules" "${PROJECT_BINARY_DIR}/rules")
|
||||
|
||||
@@ -18,5 +18,5 @@ along with falco. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
#pragma once
|
||||
|
||||
#define FALCO_ENGINE_LUA_DIR "${FALCO_ABSOLUTE_SHARE_DIR}/lua/"
|
||||
#define FALCO_ENGINE_LUA_DIR "${FALCO_SHARE_DIR}/lua/"
|
||||
#define FALCO_ENGINE_SOURCE_LUA_DIR "${PROJECT_SOURCE_DIR}/../falco/userspace/engine/lua/"
|
||||
|
||||
@@ -21,16 +21,6 @@ along with falco. If not, see <http://www.gnu.org/licenses/>.
|
||||
#include "config_falco_engine.h"
|
||||
#include "falco_common.h"
|
||||
|
||||
std::vector<std::string> falco_common::priority_names = {
|
||||
"Emergency",
|
||||
"Alert",
|
||||
"Critical",
|
||||
"Error",
|
||||
"Warning",
|
||||
"Notice",
|
||||
"Informational",
|
||||
"Debug"};
|
||||
|
||||
falco_common::falco_common()
|
||||
{
|
||||
m_ls = lua_open();
|
||||
|
||||
@@ -74,22 +74,6 @@ public:
|
||||
|
||||
void set_inspector(sinsp *inspector);
|
||||
|
||||
// Priority levels, as a vector of strings
|
||||
static std::vector<std::string> priority_names;
|
||||
|
||||
// Same as numbers/indices into the above vector
|
||||
enum priority_type
|
||||
{
|
||||
PRIORITY_EMERGENCY = 0,
|
||||
PRIORITY_ALERT = 1,
|
||||
PRIORITY_CRITICAL = 2,
|
||||
PRIORITY_ERROR = 3,
|
||||
PRIORITY_WARNING = 4,
|
||||
PRIORITY_NOTICE = 5,
|
||||
PRIORITY_INFORMATIONAL = 6,
|
||||
PRIORITY_DEBUG = 7
|
||||
};
|
||||
|
||||
protected:
|
||||
lua_State *m_ls;
|
||||
|
||||
|
||||
@@ -41,7 +41,6 @@ using namespace std;
|
||||
|
||||
falco_engine::falco_engine(bool seed_rng)
|
||||
: m_rules(NULL), m_next_ruleset_id(0),
|
||||
m_min_priority(falco_common::PRIORITY_DEBUG),
|
||||
m_sampling_ratio(1), m_sampling_multiplier(0),
|
||||
m_replace_container_info(false)
|
||||
{
|
||||
@@ -90,7 +89,7 @@ void falco_engine::load_rules(const string &rules_content, bool verbose, bool al
|
||||
bool json_output = false;
|
||||
falco_formats::init(m_inspector, m_ls, json_output);
|
||||
|
||||
m_rules->load_rules(rules_content, verbose, all_events, m_extra, m_replace_container_info, m_min_priority);
|
||||
m_rules->load_rules(rules_content, verbose, all_events, m_extra, m_replace_container_info);
|
||||
}
|
||||
|
||||
void falco_engine::load_rules_file(const string &rules_filename, bool verbose, bool all_events)
|
||||
@@ -135,11 +134,6 @@ void falco_engine::enable_rule_by_tag(const set<string> &tags, bool enabled)
|
||||
enable_rule_by_tag(tags, enabled, m_default_ruleset);
|
||||
}
|
||||
|
||||
void falco_engine::set_min_priority(falco_common::priority_type priority)
|
||||
{
|
||||
m_min_priority = priority;
|
||||
}
|
||||
|
||||
uint16_t falco_engine::find_ruleset_id(const std::string &ruleset)
|
||||
{
|
||||
auto it = m_known_rulesets.lower_bound(ruleset);
|
||||
@@ -184,7 +178,7 @@ unique_ptr<falco_engine::rule_result> falco_engine::process_event(sinsp_evt *ev,
|
||||
res->evt = ev;
|
||||
const char *p = lua_tostring(m_ls, -3);
|
||||
res->rule = p;
|
||||
res->priority_num = (falco_common::priority_type) lua_tonumber(m_ls, -2);
|
||||
res->priority = lua_tostring(m_ls, -2);
|
||||
res->format = lua_tostring(m_ls, -1);
|
||||
lua_pop(m_ls, 3);
|
||||
}
|
||||
|
||||
@@ -67,13 +67,10 @@ public:
|
||||
// Wrapper that assumes the default ruleset
|
||||
void enable_rule_by_tag(const std::set<std::string> &tags, bool enabled);
|
||||
|
||||
// Only load rules having this priority or more severe.
|
||||
void set_min_priority(falco_common::priority_type priority);
|
||||
|
||||
struct rule_result {
|
||||
sinsp_evt *evt;
|
||||
std::string rule;
|
||||
falco_common::priority_type priority_num;
|
||||
std::string priority;
|
||||
std::string format;
|
||||
};
|
||||
|
||||
@@ -161,7 +158,6 @@ private:
|
||||
uint16_t m_next_ruleset_id;
|
||||
std::map<string, uint16_t> m_known_rulesets;
|
||||
std::unique_ptr<sinsp_evttype_filter> m_evttype_filter;
|
||||
falco_common::priority_type m_min_priority;
|
||||
|
||||
//
|
||||
// Here's how the sampling ratio and multiplier influence
|
||||
|
||||
@@ -92,7 +92,6 @@ int falco_formats::free_formatters(lua_State *ls)
|
||||
int falco_formats::format_event (lua_State *ls)
|
||||
{
|
||||
string line;
|
||||
string json_line;
|
||||
|
||||
if (!lua_isstring(ls, -1) ||
|
||||
!lua_isstring(ls, -2) ||
|
||||
@@ -110,20 +109,6 @@ int falco_formats::format_event (lua_State *ls)
|
||||
|
||||
try {
|
||||
s_formatters->tostring(evt, sformat, &line);
|
||||
|
||||
if(s_json_output)
|
||||
{
|
||||
s_inspector->set_buffer_format(sinsp_evt::PF_JSON);
|
||||
s_formatters->tostring(evt, sformat, &json_line);
|
||||
|
||||
// The formatted string might have a leading newline. If it does, remove it.
|
||||
if (json_line[0] == '\n')
|
||||
{
|
||||
json_line.erase(0, 1);
|
||||
}
|
||||
|
||||
s_inspector->set_buffer_format(sinsp_evt::PF_NORMAL);
|
||||
}
|
||||
}
|
||||
catch (sinsp_exception& e)
|
||||
{
|
||||
@@ -132,15 +117,13 @@ int falco_formats::format_event (lua_State *ls)
|
||||
lua_error(ls);
|
||||
}
|
||||
|
||||
// For JSON output, the formatter returned a json-as-text
|
||||
// object containing all the fields in the original format
|
||||
// message as well as the event time in ns. Use this to build
|
||||
// a more detailed object containing the event time, rule,
|
||||
// severity, full output, and fields.
|
||||
// For JSON output, the formatter returned just the output
|
||||
// string containing the format text and values. Use this to
|
||||
// build a more detailed object containing the event time,
|
||||
// rule, severity, full output, and fields.
|
||||
if (s_json_output) {
|
||||
Json::Value event;
|
||||
Json::FastWriter writer;
|
||||
string full_line;
|
||||
|
||||
// Convert the time-as-nanoseconds to a more json-friendly ISO8601.
|
||||
time_t evttime = evt->get_ts()/1000000000;
|
||||
@@ -155,26 +138,16 @@ int falco_formats::format_event (lua_State *ls)
|
||||
event["time"] = iso8601evttime;
|
||||
event["rule"] = rule;
|
||||
event["priority"] = level;
|
||||
// This is the filled-in output line.
|
||||
event["output"] = line;
|
||||
|
||||
full_line = writer.write(event);
|
||||
line = writer.write(event);
|
||||
|
||||
// Json::FastWriter may add a trailing newline. If it
|
||||
// does, remove it.
|
||||
if (full_line[full_line.length()-1] == '\n')
|
||||
if (line[line.length()-1] == '\n')
|
||||
{
|
||||
full_line.resize(full_line.length()-1);
|
||||
line.resize(line.length()-1);
|
||||
}
|
||||
|
||||
// Cheat-graft the output from the formatter into this
|
||||
// string. Avoids an unnecessary json parse just to
|
||||
// merge the formatted fields at the object level.
|
||||
full_line.pop_back();
|
||||
full_line.append(", \"output_fields\": ");
|
||||
full_line.append(json_line);
|
||||
full_line.append("}");
|
||||
line = full_line;
|
||||
}
|
||||
|
||||
lua_pushstring(ls, line.c_str());
|
||||
|
||||
@@ -20,7 +20,6 @@ local compiler = {}
|
||||
|
||||
compiler.verbose = false
|
||||
compiler.all_events = false
|
||||
compiler.trim = parser.trim
|
||||
|
||||
function compiler.set_verbose(verbose)
|
||||
compiler.verbose = verbose
|
||||
@@ -59,16 +58,15 @@ end
|
||||
definition uses another macro).
|
||||
|
||||
--]]
|
||||
|
||||
function copy_ast_obj(obj)
|
||||
if type(obj) ~= 'table' then return obj end
|
||||
local res = {}
|
||||
for k, v in pairs(obj) do res[copy_ast_obj(k)] = copy_ast_obj(v) end
|
||||
return res
|
||||
end
|
||||
|
||||
function expand_macros(ast, defs, changed)
|
||||
|
||||
function copy(obj)
|
||||
if type(obj) ~= 'table' then return obj end
|
||||
local res = {}
|
||||
for k, v in pairs(obj) do res[copy(k)] = copy(v) end
|
||||
return res
|
||||
end
|
||||
|
||||
if (ast.type == "Rule") then
|
||||
return expand_macros(ast.filter, defs, changed)
|
||||
elseif ast.type == "Filter" then
|
||||
@@ -76,7 +74,7 @@ function expand_macros(ast, defs, changed)
|
||||
if (defs[ast.value.value] == nil) then
|
||||
error("Undefined macro '".. ast.value.value .. "' used in filter.")
|
||||
end
|
||||
ast.value = copy_ast_obj(defs[ast.value.value])
|
||||
ast.value = copy(defs[ast.value.value])
|
||||
changed = true
|
||||
return changed
|
||||
end
|
||||
@@ -88,7 +86,7 @@ function expand_macros(ast, defs, changed)
|
||||
if (defs[ast.left.value] == nil) then
|
||||
error("Undefined macro '".. ast.left.value .. "' used in filter.")
|
||||
end
|
||||
ast.left = copy_ast_obj(defs[ast.left.value])
|
||||
ast.left = copy(defs[ast.left.value])
|
||||
changed = true
|
||||
end
|
||||
|
||||
@@ -96,7 +94,7 @@ function expand_macros(ast, defs, changed)
|
||||
if (defs[ast.right.value] == nil) then
|
||||
error("Undefined macro ".. ast.right.value .. " used in filter.")
|
||||
end
|
||||
ast.right = copy_ast_obj(defs[ast.right.value])
|
||||
ast.right = copy(defs[ast.right.value])
|
||||
changed = true
|
||||
end
|
||||
|
||||
@@ -109,7 +107,7 @@ function expand_macros(ast, defs, changed)
|
||||
if (defs[ast.argument.value] == nil) then
|
||||
error("Undefined macro ".. ast.argument.value .. " used in filter.")
|
||||
end
|
||||
ast.argument = copy_ast_obj(defs[ast.argument.value])
|
||||
ast.argument = copy(defs[ast.argument.value])
|
||||
changed = true
|
||||
end
|
||||
return expand_macros(ast.argument, defs, changed)
|
||||
@@ -283,7 +281,7 @@ function get_evttypes(name, ast, source)
|
||||
return evttypes
|
||||
end
|
||||
|
||||
function compiler.compile_macro(line, macro_defs, list_defs)
|
||||
function compiler.compile_macro(line, list_defs)
|
||||
|
||||
for name, items in pairs(list_defs) do
|
||||
line = string.gsub(line, name, table.concat(items, ", "))
|
||||
@@ -302,21 +300,6 @@ function compiler.compile_macro(line, macro_defs, list_defs)
|
||||
check_for_ignored_syscalls_events(ast, 'macro', line)
|
||||
end
|
||||
|
||||
-- Simply as a validation step, try to expand all macros in this
|
||||
-- macro's condition. This changes the ast, so we make a copy
|
||||
-- first.
|
||||
local ast_copy = copy_ast_obj(ast)
|
||||
|
||||
if (ast.type == "Rule") then
|
||||
-- Line is a filter, so expand macro references
|
||||
repeat
|
||||
expanded = expand_macros(ast_copy, macro_defs, false)
|
||||
until expanded == false
|
||||
|
||||
else
|
||||
error("Unexpected top-level AST type: "..ast.type)
|
||||
end
|
||||
|
||||
return ast
|
||||
end
|
||||
|
||||
@@ -326,12 +309,7 @@ end
|
||||
function compiler.compile_filter(name, source, macro_defs, list_defs)
|
||||
|
||||
for name, items in pairs(list_defs) do
|
||||
local begin_name_pat = "^("..name..")([%s(),=])"
|
||||
local mid_name_pat = "([%s(),=])("..name..")([%s(),=])"
|
||||
local end_name_pat = "([%s(),=])("..name..")$"
|
||||
source = string.gsub(source, begin_name_pat, table.concat(items, ", ").."%2")
|
||||
source = string.gsub(source, mid_name_pat, "%1"..table.concat(items, ", ").."%3")
|
||||
source = string.gsub(source, end_name_pat, "%1"..table.concat(items, ", "))
|
||||
source = string.gsub(source, name, table.concat(items, ", "))
|
||||
end
|
||||
|
||||
local ast, error_msg = parser.parse_filter(source)
|
||||
|
||||
@@ -127,11 +127,10 @@ function trim(s)
|
||||
if (type(s) ~= "string") then return s end
|
||||
return (s:gsub("^%s*(.-)%s*$", "%1"))
|
||||
end
|
||||
parser.trim = trim
|
||||
|
||||
local function terminal (tag)
|
||||
-- Rather than trim the whitespace in this way, it would be nicer to exclude it from the capture...
|
||||
return token(V(tag), tag) / function (tok) val = tok; if tag ~= "String" then val = trim(tok) end; return { type = tag, value = val} end
|
||||
return token(V(tag), tag) / function (tok) return { type = tag, value = trim(tok)} end
|
||||
end
|
||||
|
||||
local function unaryboolop (op, e)
|
||||
@@ -238,7 +237,7 @@ local G = {
|
||||
Identifier = V"idStart" * V"idRest"^0;
|
||||
Macro = V"idStart" * V"idRest"^0 * -P".";
|
||||
Int = digit^1;
|
||||
PathString = (alnum + S'.-_/*?')^1;
|
||||
PathString = (alnum + S'-_/*?')^1;
|
||||
Index = V"Int" + V"PathString";
|
||||
FieldName = V"Identifier" * (P"." + V"Identifier")^1 * (P"[" * V"Index" * P"]")^-1;
|
||||
Name = C(V"Identifier") * -V"idRest";
|
||||
|
||||
@@ -58,17 +58,6 @@ function map(f, arr)
|
||||
return res
|
||||
end
|
||||
|
||||
priorities = {"Emergency", "Alert", "Critical", "Error", "Warning", "Notice", "Informational", "Debug"}
|
||||
|
||||
local function priority_num_for(s)
|
||||
s = string.lower(s)
|
||||
for i,v in ipairs(priorities) do
|
||||
if (string.find(string.lower(v), "^"..s)) then
|
||||
return i - 1 -- (numbers start at 0, lua indices start at 1)
|
||||
end
|
||||
end
|
||||
error("Invalid priority level: "..s)
|
||||
end
|
||||
|
||||
--[[
|
||||
Take a filter AST and set it up in the libsinsp runtime, using the filter API.
|
||||
@@ -182,7 +171,7 @@ function table.tostring( tbl )
|
||||
end
|
||||
|
||||
|
||||
function load_rules(rules_content, rules_mgr, verbose, all_events, extra, replace_container_info, min_priority)
|
||||
function load_rules(rules_content, rules_mgr, verbose, all_events, extra, replace_container_info)
|
||||
|
||||
compiler.set_verbose(verbose)
|
||||
compiler.set_all_events(all_events)
|
||||
@@ -219,23 +208,7 @@ function load_rules(rules_content, rules_mgr, verbose, all_events, extra, replac
|
||||
end
|
||||
end
|
||||
|
||||
-- Possibly append to the condition field of an existing macro
|
||||
append = false
|
||||
|
||||
if v['append'] then
|
||||
append = v['append']
|
||||
end
|
||||
|
||||
if append then
|
||||
if state.macros_by_name[v['macro']] == nil then
|
||||
error ("Macro " ..v['macro'].. " has 'append' key but no macro by that name already exists")
|
||||
end
|
||||
|
||||
state.macros_by_name[v['macro']]['condition'] = state.macros_by_name[v['macro']]['condition'] .. " " .. v['condition']
|
||||
|
||||
else
|
||||
state.macros_by_name[v['macro']] = v
|
||||
end
|
||||
state.macros_by_name[v['macro']] = v
|
||||
|
||||
elseif (v['list']) then
|
||||
|
||||
@@ -249,24 +222,7 @@ function load_rules(rules_content, rules_mgr, verbose, all_events, extra, replac
|
||||
end
|
||||
end
|
||||
|
||||
-- Possibly append to an existing list
|
||||
append = false
|
||||
|
||||
if v['append'] then
|
||||
append = v['append']
|
||||
end
|
||||
|
||||
if append then
|
||||
if state.lists_by_name[v['list']] == nil then
|
||||
error ("List " ..v['list'].. " has 'append' key but no list by that name already exists")
|
||||
end
|
||||
|
||||
for i, elem in ipairs(v['items']) do
|
||||
table.insert(state.lists_by_name[v['list']]['items'], elem)
|
||||
end
|
||||
else
|
||||
state.lists_by_name[v['list']] = v
|
||||
end
|
||||
state.lists_by_name[v['list']] = v
|
||||
|
||||
elseif (v['rule']) then
|
||||
|
||||
@@ -274,54 +230,21 @@ function load_rules(rules_content, rules_mgr, verbose, all_events, extra, replac
|
||||
error ("Missing name in rule")
|
||||
end
|
||||
|
||||
-- Possibly append to the condition field of an existing rule
|
||||
append = false
|
||||
|
||||
if v['append'] then
|
||||
append = v['append']
|
||||
end
|
||||
|
||||
if append then
|
||||
|
||||
-- For append rules, all you need is the condition
|
||||
for i, field in ipairs({'condition'}) do
|
||||
if (v[field] == nil) then
|
||||
error ("Missing "..field.." in rule with name "..v['rule'])
|
||||
end
|
||||
end
|
||||
|
||||
if state.rules_by_name[v['rule']] == nil then
|
||||
error ("Rule " ..v['rule'].. " has 'append' key but no rule by that name already exists")
|
||||
end
|
||||
|
||||
state.rules_by_name[v['rule']]['condition'] = state.rules_by_name[v['rule']]['condition'] .. " " .. v['condition']
|
||||
|
||||
else
|
||||
|
||||
for i, field in ipairs({'condition', 'output', 'desc', 'priority'}) do
|
||||
if (v[field] == nil) then
|
||||
error ("Missing "..field.." in rule with name "..v['rule'])
|
||||
end
|
||||
end
|
||||
|
||||
-- Convert the priority-as-string to a priority-as-number now
|
||||
v['priority_num'] = priority_num_for(v['priority'])
|
||||
|
||||
if v['priority_num'] <= min_priority then
|
||||
-- Note that we can overwrite rules, but the rules are still
|
||||
-- loaded in the order in which they first appeared,
|
||||
-- potentially across multiple files.
|
||||
if state.rules_by_name[v['rule']] == nil then
|
||||
state.ordered_rule_names[#state.ordered_rule_names+1] = v['rule']
|
||||
end
|
||||
|
||||
-- The output field might be a folded-style, which adds a
|
||||
-- newline to the end. Remove any trailing newlines.
|
||||
v['output'] = compiler.trim(v['output'])
|
||||
|
||||
state.rules_by_name[v['rule']] = v
|
||||
for i, field in ipairs({'condition', 'output', 'desc', 'priority'}) do
|
||||
if (v[field] == nil) then
|
||||
error ("Missing "..field.." in rule with name "..v['rule'])
|
||||
end
|
||||
end
|
||||
|
||||
-- Note that we can overwrite rules, but the rules are still
|
||||
-- loaded in the order in which they first appeared,
|
||||
-- potentially across multiple files.
|
||||
if state.rules_by_name[v['rule']] == nil then
|
||||
state.ordered_rule_names[#state.ordered_rule_names+1] = v['rule']
|
||||
end
|
||||
|
||||
state.rules_by_name[v['rule']] = v
|
||||
|
||||
else
|
||||
error ("Unknown rule object: "..table.tostring(v))
|
||||
end
|
||||
@@ -360,7 +283,7 @@ function load_rules(rules_content, rules_mgr, verbose, all_events, extra, replac
|
||||
|
||||
local v = state.macros_by_name[name]
|
||||
|
||||
local ast = compiler.compile_macro(v['condition'], state.macros, state.lists)
|
||||
local ast = compiler.compile_macro(v['condition'], state.lists)
|
||||
state.macros[v['macro']] = ast.filter.value
|
||||
end
|
||||
|
||||
@@ -520,7 +443,7 @@ function on_event(evt_, rule_id)
|
||||
-- Prefix output with '*' so formatting is permissive
|
||||
output = "*"..rule.output
|
||||
|
||||
return rule.rule, rule.priority_num, output
|
||||
return rule.rule, rule.priority, output
|
||||
end
|
||||
|
||||
function print_stats()
|
||||
|
||||
@@ -145,8 +145,7 @@ void falco_rules::enable_rule(string &rule, bool enabled)
|
||||
|
||||
void falco_rules::load_rules(const string &rules_content,
|
||||
bool verbose, bool all_events,
|
||||
string &extra, bool replace_container_info,
|
||||
falco_common::priority_type min_priority)
|
||||
string &extra, bool replace_container_info)
|
||||
{
|
||||
lua_getglobal(m_ls, m_lua_load_rules.c_str());
|
||||
if(lua_isfunction(m_ls, -1))
|
||||
@@ -222,8 +221,7 @@ void falco_rules::load_rules(const string &rules_content,
|
||||
lua_pushboolean(m_ls, (all_events ? 1 : 0));
|
||||
lua_pushstring(m_ls, extra.c_str());
|
||||
lua_pushboolean(m_ls, (replace_container_info ? 1 : 0));
|
||||
lua_pushnumber(m_ls, min_priority);
|
||||
if(lua_pcall(m_ls, 7, 0, 0) != 0)
|
||||
if(lua_pcall(m_ls, 6, 0, 0) != 0)
|
||||
{
|
||||
const char* lerr = lua_tostring(m_ls, -1);
|
||||
string err = "Error loading rules:" + string(lerr);
|
||||
|
||||
@@ -24,8 +24,6 @@ along with falco. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
#include "lua_parser.h"
|
||||
|
||||
#include "falco_common.h"
|
||||
|
||||
class falco_engine;
|
||||
|
||||
class falco_rules
|
||||
@@ -34,8 +32,7 @@ class falco_rules
|
||||
falco_rules(sinsp* inspector, falco_engine *engine, lua_State *ls);
|
||||
~falco_rules();
|
||||
void load_rules(const string &rules_content, bool verbose, bool all_events,
|
||||
std::string &extra, bool replace_container_info,
|
||||
falco_common::priority_type min_priority);
|
||||
std::string &extra, bool replace_container_info);
|
||||
void describe_rule(string *rule);
|
||||
|
||||
static void init(lua_State *ls);
|
||||
|
||||
@@ -19,7 +19,7 @@ target_link_libraries(falco
|
||||
|
||||
configure_file(config_falco.h.in config_falco.h)
|
||||
|
||||
install(TARGETS falco DESTINATION ${FALCO_BIN_DIR})
|
||||
install(TARGETS falco DESTINATION bin)
|
||||
install(DIRECTORY lua
|
||||
DESTINATION ${FALCO_SHARE_DIR}
|
||||
DESTINATION share/falco
|
||||
FILES_MATCHING PATTERN *.lua)
|
||||
|
||||
@@ -5,7 +5,7 @@
|
||||
#define FALCO_LUA_DIR "${CMAKE_INSTALL_PREFIX}/${FALCO_SHARE_DIR}/lua/"
|
||||
#define FALCO_SOURCE_DIR "${PROJECT_SOURCE_DIR}"
|
||||
#define FALCO_SOURCE_CONF_FILE "${PROJECT_SOURCE_DIR}/falco.yaml"
|
||||
#define FALCO_INSTALL_CONF_FILE "/etc/falco/falco.yaml"
|
||||
#define FALCO_INSTALL_CONF_FILE "/etc/falco.yaml"
|
||||
#define FALCO_SOURCE_LUA_DIR "${PROJECT_SOURCE_DIR}/userspace/falco/lua/"
|
||||
|
||||
#define PROBE_NAME "${PROBE_NAME}"
|
||||
|
||||
@@ -22,8 +22,7 @@ along with falco. If not, see <http://www.gnu.org/licenses/>.
|
||||
using namespace std;
|
||||
|
||||
falco_configuration::falco_configuration()
|
||||
: m_buffered_outputs(true),
|
||||
m_config(NULL)
|
||||
: m_config(NULL)
|
||||
{
|
||||
}
|
||||
|
||||
@@ -52,37 +51,20 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
|
||||
|
||||
init_cmdline_options(cmdline_options);
|
||||
|
||||
list<string> rules_files;
|
||||
|
||||
m_config->get_sequence<list<string>>(rules_files, string("rules_file"));
|
||||
|
||||
for(auto &file : rules_files)
|
||||
{
|
||||
// Here, we only include files that exist
|
||||
struct stat buffer;
|
||||
if(stat(file.c_str(), &buffer) == 0)
|
||||
{
|
||||
m_rules_filenames.push_back(file);
|
||||
}
|
||||
}
|
||||
|
||||
m_rules_filenames.push_back(m_config->get_scalar<string>("rules_file", "/etc/falco_rules.yaml"));
|
||||
m_json_output = m_config->get_scalar<bool>("json_output", false);
|
||||
|
||||
falco_outputs::output_config file_output;
|
||||
file_output.name = "file";
|
||||
if (m_config->get_scalar<bool>("file_output", "enabled", false))
|
||||
{
|
||||
string filename, keep_alive;
|
||||
string filename;
|
||||
filename = m_config->get_scalar<string>("file_output", "filename", "");
|
||||
if (filename == string(""))
|
||||
{
|
||||
throw invalid_argument("Error reading config file (" + m_config_file + "): file output enabled but no filename in configuration block");
|
||||
}
|
||||
file_output.options["filename"] = filename;
|
||||
|
||||
keep_alive = m_config->get_scalar<string>("file_output", "keep_alive", "");
|
||||
file_output.options["keep_alive"] = keep_alive;
|
||||
|
||||
m_outputs.push_back(file_output);
|
||||
}
|
||||
|
||||
@@ -104,17 +86,13 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
|
||||
program_output.name = "program";
|
||||
if (m_config->get_scalar<bool>("program_output", "enabled", false))
|
||||
{
|
||||
string program, keep_alive;
|
||||
string program;
|
||||
program = m_config->get_scalar<string>("program_output", "program", "");
|
||||
if (program == string(""))
|
||||
{
|
||||
throw sinsp_exception("Error reading config file (" + m_config_file + "): program output enabled but no program in configuration block");
|
||||
}
|
||||
program_output.options["program"] = program;
|
||||
|
||||
keep_alive = m_config->get_scalar<string>("program_output", "keep_alive", "");
|
||||
program_output.options["keep_alive"] = keep_alive;
|
||||
|
||||
m_outputs.push_back(program_output);
|
||||
}
|
||||
|
||||
@@ -130,21 +108,6 @@ void falco_configuration::init(string conf_filename, list<string> &cmdline_optio
|
||||
m_notifications_rate = m_config->get_scalar<uint32_t>("outputs", "rate", 1);
|
||||
m_notifications_max_burst = m_config->get_scalar<uint32_t>("outputs", "max_burst", 1000);
|
||||
|
||||
string priority = m_config->get_scalar<string>("priority", "debug");
|
||||
vector<string>::iterator it;
|
||||
|
||||
auto comp = [priority] (string &s) {
|
||||
return (strcasecmp(s.c_str(), priority.c_str()) == 0);
|
||||
};
|
||||
|
||||
if((it = std::find_if(falco_common::priority_names.begin(), falco_common::priority_names.end(), comp)) == falco_common::priority_names.end())
|
||||
{
|
||||
throw invalid_argument("Unknown priority \"" + priority + "\"--must be one of emergency, alert, critical, error, warning, notice, informational, debug");
|
||||
}
|
||||
m_min_priority = (falco_common::priority_type) (it - falco_common::priority_names.begin());
|
||||
|
||||
m_buffered_outputs = m_config->get_scalar<bool>("buffered_outputs", true);
|
||||
|
||||
falco_logger::log_stderr = m_config->get_scalar<bool>("log_stderr", false);
|
||||
falco_logger::log_syslog = m_config->get_scalar<bool>("log_syslog", true);
|
||||
}
|
||||
|
||||
@@ -18,9 +18,6 @@ along with falco. If not, see <http://www.gnu.org/licenses/>.
|
||||
|
||||
#pragma once
|
||||
|
||||
#include <sys/types.h>
|
||||
#include <sys/stat.h>
|
||||
#include <unistd.h>
|
||||
#include <yaml-cpp/yaml.h>
|
||||
#include <string>
|
||||
#include <vector>
|
||||
@@ -130,27 +127,6 @@ public:
|
||||
}
|
||||
}
|
||||
|
||||
// called with the last variadic arg (where the sequence is expected to be found)
|
||||
template <typename T>
|
||||
void get_sequence(T& ret, const std::string& name)
|
||||
{
|
||||
YAML::Node child_node = m_root[name];
|
||||
if(child_node.IsDefined())
|
||||
{
|
||||
if(child_node.IsSequence())
|
||||
{
|
||||
for(const YAML::Node& item : child_node)
|
||||
{
|
||||
ret.insert(ret.end(), item.as<typename T::value_type>());
|
||||
}
|
||||
}
|
||||
else if(child_node.IsScalar())
|
||||
{
|
||||
ret.insert(ret.end(), child_node.as<typename T::value_type>());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private:
|
||||
YAML::Node m_root;
|
||||
};
|
||||
@@ -170,10 +146,6 @@ class falco_configuration
|
||||
std::vector<falco_outputs::output_config> m_outputs;
|
||||
uint32_t m_notifications_rate;
|
||||
uint32_t m_notifications_max_burst;
|
||||
|
||||
falco_common::priority_type m_min_priority;
|
||||
|
||||
bool m_buffered_outputs;
|
||||
private:
|
||||
void init_cmdline_options(std::list<std::string> &cmdline_options);
|
||||
|
||||
|
||||
@@ -107,11 +107,6 @@ static void usage()
|
||||
" Can not be specified with -t.\n"
|
||||
" -t <tag> Only run those rules with a tag=<tag>. Can be specified multiple times.\n"
|
||||
" Can not be specified with -T/-D.\n"
|
||||
" -U,--unbuffered Turn off output buffering to configured outputs. This causes every\n"
|
||||
" single line emitted by falco to be flushed, which generates higher CPU\n"
|
||||
" usage but is useful when piping those outputs into another process\n"
|
||||
" or into a script.\n"
|
||||
" -V,--validate <rules_file> Read the contents of the specified rules file and exit\n"
|
||||
" -v Verbose output.\n"
|
||||
" --version Print version number.\n"
|
||||
"\n"
|
||||
@@ -217,7 +212,7 @@ uint64_t do_inspect(falco_engine *engine,
|
||||
unique_ptr<falco_engine::rule_result> res = engine->process_event(ev);
|
||||
if(res)
|
||||
{
|
||||
outputs->handle_event(res->evt, res->rule, res->priority_num, res->format);
|
||||
outputs->handle_event(res->evt, res->rule, res->priority, res->format);
|
||||
}
|
||||
|
||||
num_evts++;
|
||||
@@ -245,7 +240,6 @@ int falco_init(int argc, char **argv)
|
||||
string pidfilename = "/var/run/falco.pid";
|
||||
bool describe_all_rules = false;
|
||||
string describe_rule = "";
|
||||
string validate_rules_file = "";
|
||||
string stats_filename = "";
|
||||
bool verbose = false;
|
||||
bool all_events = false;
|
||||
@@ -262,8 +256,6 @@ int falco_init(int argc, char **argv)
|
||||
int file_limit = 0;
|
||||
unsigned long event_limit = 0L;
|
||||
bool compress = false;
|
||||
bool buffered_outputs = true;
|
||||
bool buffered_cmdline = false;
|
||||
|
||||
// Used for stats
|
||||
uint64_t num_evts;
|
||||
@@ -280,9 +272,7 @@ int falco_init(int argc, char **argv)
|
||||
{"option", required_argument, 0, 'o'},
|
||||
{"print", required_argument, 0, 'p' },
|
||||
{"pidfile", required_argument, 0, 'P' },
|
||||
{"unbuffered", no_argument, 0, 'U' },
|
||||
{"version", no_argument, 0, 0 },
|
||||
{"validate", required_argument, 0, 0 },
|
||||
{"writefile", required_argument, 0, 'w' },
|
||||
|
||||
{0, 0, 0, 0}
|
||||
@@ -300,7 +290,7 @@ int falco_init(int argc, char **argv)
|
||||
// Parse the args
|
||||
//
|
||||
while((op = getopt_long(argc, argv,
|
||||
"hc:AdD:e:k:K:Ll:m:M:o:P:p:r:s:T:t:UvV:w:",
|
||||
"hc:AdD:e:k:K:Ll:m:M:o:P:p:r:s:T:t:vw:",
|
||||
long_options, &long_index)) != -1)
|
||||
{
|
||||
switch(op)
|
||||
@@ -388,16 +378,9 @@ int falco_init(int argc, char **argv)
|
||||
case 't':
|
||||
enabled_rule_tags.insert(optarg);
|
||||
break;
|
||||
case 'U':
|
||||
buffered_outputs = false;
|
||||
buffered_cmdline = true;
|
||||
break;
|
||||
case 'v':
|
||||
verbose = true;
|
||||
break;
|
||||
case 'V':
|
||||
validate_rules_file = optarg;
|
||||
break;
|
||||
case 'w':
|
||||
outfile = optarg;
|
||||
break;
|
||||
@@ -460,14 +443,6 @@ int falco_init(int argc, char **argv)
|
||||
}
|
||||
}
|
||||
|
||||
if(validate_rules_file != "")
|
||||
{
|
||||
falco_logger::log(LOG_INFO, "Validating rules file: " + validate_rules_file + "...\n");
|
||||
engine->load_rules_file(validate_rules_file, verbose, all_events);
|
||||
falco_logger::log(LOG_INFO, "Ok\n");
|
||||
goto exit;
|
||||
}
|
||||
|
||||
falco_configuration config;
|
||||
if (conf_filename.size())
|
||||
{
|
||||
@@ -486,18 +461,6 @@ int falco_init(int argc, char **argv)
|
||||
config.m_rules_filenames = rules_filenames;
|
||||
}
|
||||
|
||||
engine->set_min_priority(config.m_min_priority);
|
||||
|
||||
if(buffered_cmdline)
|
||||
{
|
||||
config.m_buffered_outputs = buffered_outputs;
|
||||
}
|
||||
|
||||
if(config.m_rules_filenames.size() == 0)
|
||||
{
|
||||
throw std::invalid_argument("You must specify at least one rules file via -r or a rules_file entry in falco.yaml");
|
||||
}
|
||||
|
||||
for (auto filename : config.m_rules_filenames)
|
||||
{
|
||||
engine->load_rules_file(filename, verbose, all_events);
|
||||
@@ -538,9 +501,7 @@ int falco_init(int argc, char **argv)
|
||||
engine->enable_rule_by_tag(enabled_rule_tags, true);
|
||||
}
|
||||
|
||||
outputs->init(config.m_json_output,
|
||||
config.m_notifications_rate, config.m_notifications_max_burst,
|
||||
config.m_buffered_outputs);
|
||||
outputs->init(config.m_json_output, config.m_notifications_rate, config.m_notifications_max_burst);
|
||||
|
||||
if(!all_events)
|
||||
{
|
||||
|
||||
@@ -27,8 +27,7 @@ along with falco. If not, see <http://www.gnu.org/licenses/>.
|
||||
using namespace std;
|
||||
|
||||
falco_outputs::falco_outputs()
|
||||
: m_initialized(false),
|
||||
m_buffered(true)
|
||||
: m_initialized(false)
|
||||
{
|
||||
|
||||
}
|
||||
@@ -52,7 +51,7 @@ falco_outputs::~falco_outputs()
|
||||
}
|
||||
}
|
||||
|
||||
void falco_outputs::init(bool json_output, uint32_t rate, uint32_t max_burst, bool buffered)
|
||||
void falco_outputs::init(bool json_output, uint32_t rate, uint32_t max_burst)
|
||||
{
|
||||
// The engine must have been given an inspector by now.
|
||||
if(! m_inspector)
|
||||
@@ -71,14 +70,12 @@ void falco_outputs::init(bool json_output, uint32_t rate, uint32_t max_burst, bo
|
||||
|
||||
m_notifications_tb.init(rate, max_burst);
|
||||
|
||||
m_buffered = buffered;
|
||||
|
||||
m_initialized = true;
|
||||
}
|
||||
|
||||
void falco_outputs::add_output(output_config oc)
|
||||
{
|
||||
uint8_t nargs = 2;
|
||||
uint8_t nargs = 1;
|
||||
lua_getglobal(m_ls, m_lua_add_output.c_str());
|
||||
|
||||
if(!lua_isfunction(m_ls, -1))
|
||||
@@ -86,12 +83,11 @@ void falco_outputs::add_output(output_config oc)
|
||||
throw falco_exception("No function " + m_lua_add_output + " found. ");
|
||||
}
|
||||
lua_pushstring(m_ls, oc.name.c_str());
|
||||
lua_pushnumber(m_ls, (m_buffered ? 1 : 0));
|
||||
|
||||
// If we have options, build up a lua table containing them
|
||||
if (oc.options.size())
|
||||
{
|
||||
nargs = 3;
|
||||
nargs = 2;
|
||||
lua_createtable(m_ls, 0, oc.options.size());
|
||||
|
||||
for (auto it = oc.options.cbegin(); it != oc.options.cend(); ++it)
|
||||
@@ -109,7 +105,7 @@ void falco_outputs::add_output(output_config oc)
|
||||
|
||||
}
|
||||
|
||||
void falco_outputs::handle_event(sinsp_evt *ev, string &rule, falco_common::priority_type priority, string &format)
|
||||
void falco_outputs::handle_event(sinsp_evt *ev, string &rule, string &priority, string &format)
|
||||
{
|
||||
if(!m_notifications_tb.claim())
|
||||
{
|
||||
@@ -123,11 +119,10 @@ void falco_outputs::handle_event(sinsp_evt *ev, string &rule, falco_common::prio
|
||||
{
|
||||
lua_pushlightuserdata(m_ls, ev);
|
||||
lua_pushstring(m_ls, rule.c_str());
|
||||
lua_pushstring(m_ls, falco_common::priority_names[priority].c_str());
|
||||
lua_pushnumber(m_ls, priority);
|
||||
lua_pushstring(m_ls, priority.c_str());
|
||||
lua_pushstring(m_ls, format.c_str());
|
||||
|
||||
if(lua_pcall(m_ls, 5, 0, 0) != 0)
|
||||
if(lua_pcall(m_ls, 4, 0, 0) != 0)
|
||||
{
|
||||
const char* lerr = lua_tostring(m_ls, -1);
|
||||
string err = "Error invoking function output: " + string(lerr);
|
||||
|
||||
@@ -41,7 +41,7 @@ public:
|
||||
std::map<std::string, std::string> options;
|
||||
};
|
||||
|
||||
void init(bool json_output, uint32_t rate, uint32_t max_burst, bool buffered);
|
||||
void init(bool json_output, uint32_t rate, uint32_t max_burst);
|
||||
|
||||
void add_output(output_config oc);
|
||||
|
||||
@@ -49,7 +49,7 @@ public:
|
||||
// ev is an event that has matched some rule. Pass the event
|
||||
// to all configured outputs.
|
||||
//
|
||||
void handle_event(sinsp_evt *ev, std::string &rule, falco_common::priority_type priority, std::string &format);
|
||||
void handle_event(sinsp_evt *ev, std::string &rule, std::string &priority, std::string &format);
|
||||
|
||||
private:
|
||||
bool m_initialized;
|
||||
@@ -57,8 +57,6 @@ private:
|
||||
// Rate limits notifications
|
||||
token_bucket m_notifications_tb;
|
||||
|
||||
bool m_buffered;
|
||||
|
||||
std::string m_lua_add_output = "add_output";
|
||||
std::string m_lua_output_event = "output_event";
|
||||
std::string m_lua_output_cleanup = "output_cleanup";
|
||||
|
||||
@@ -18,25 +18,22 @@
|
||||
|
||||
local mod = {}
|
||||
|
||||
levels = {"Emergency", "Alert", "Critical", "Error", "Warning", "Notice", "Informational", "Debug"}
|
||||
|
||||
mod.levels = levels
|
||||
|
||||
local outputs = {}
|
||||
|
||||
function mod.stdout(priority, priority_num, buffered, msg)
|
||||
if buffered == 0 then
|
||||
io.stdout:setvbuf 'no'
|
||||
end
|
||||
function mod.stdout(level, msg)
|
||||
print (msg)
|
||||
end
|
||||
|
||||
function mod.stdout_cleanup()
|
||||
io.stdout:flush()
|
||||
end
|
||||
|
||||
function mod.file_validate(options)
|
||||
if (not type(options.filename) == 'string') then
|
||||
error("File output needs to be configured with a valid filename")
|
||||
end
|
||||
|
||||
local file, err = io.open(options.filename, "a+")
|
||||
file, err = io.open(options.filename, "a+")
|
||||
if file == nil then
|
||||
error("Error with file output: "..err)
|
||||
end
|
||||
@@ -44,100 +41,60 @@ function mod.file_validate(options)
|
||||
|
||||
end
|
||||
|
||||
function mod.file(priority, priority_num, buffered, msg, options)
|
||||
if options.keep_alive == "true" then
|
||||
if file == nil then
|
||||
file = io.open(options.filename, "a+")
|
||||
if buffered == 0 then
|
||||
file:setvbuf 'no'
|
||||
end
|
||||
end
|
||||
else
|
||||
file = io.open(options.filename, "a+")
|
||||
end
|
||||
|
||||
function mod.file(level, msg, options)
|
||||
file = io.open(options.filename, "a+")
|
||||
file:write(msg, "\n")
|
||||
|
||||
if options.keep_alive == nil or
|
||||
options.keep_alive ~= "true" then
|
||||
file:close()
|
||||
file = nil
|
||||
end
|
||||
file:close()
|
||||
end
|
||||
|
||||
function mod.file_cleanup()
|
||||
if file ~= nil then
|
||||
file:flush()
|
||||
file:close()
|
||||
file = nil
|
||||
end
|
||||
function mod.syslog(level, msg, options)
|
||||
falco.syslog(level, msg)
|
||||
end
|
||||
|
||||
function mod.syslog(priority, priority_num, buffered, msg, options)
|
||||
falco.syslog(priority_num, msg)
|
||||
end
|
||||
|
||||
function mod.syslog_cleanup()
|
||||
end
|
||||
|
||||
function mod.program(priority, priority_num, buffered, msg, options)
|
||||
function mod.program(level, msg, options)
|
||||
-- XXX Ideally we'd check that the program ran
|
||||
-- successfully. However, the luajit we're using returns true even
|
||||
-- when the shell can't run the program.
|
||||
|
||||
-- Note: options are all strings
|
||||
if options.keep_alive == "true" then
|
||||
if file == nil then
|
||||
file = io.popen(options.program, "w")
|
||||
if buffered == 0 then
|
||||
file:setvbuf 'no'
|
||||
end
|
||||
end
|
||||
else
|
||||
file = io.popen(options.program, "w")
|
||||
end
|
||||
file = io.popen(options.program, "w")
|
||||
|
||||
file:write(msg, "\n")
|
||||
|
||||
if options.keep_alive == nil or
|
||||
options.keep_alive ~= "true" then
|
||||
file:close()
|
||||
file = nil
|
||||
end
|
||||
file:close()
|
||||
end
|
||||
|
||||
function mod.program_cleanup()
|
||||
if file ~= nil then
|
||||
file:flush()
|
||||
file:close()
|
||||
file = nil
|
||||
local function level_of(s)
|
||||
s = string.lower(s)
|
||||
for i,v in ipairs(levels) do
|
||||
if (string.find(string.lower(v), "^"..s)) then
|
||||
return i - 1 -- (syslog levels start at 0, lua indices start at 1)
|
||||
end
|
||||
end
|
||||
error("Invalid severity level: "..s)
|
||||
end
|
||||
|
||||
function output_event(event, rule, priority, priority_num, format)
|
||||
function output_event(event, rule, priority, format)
|
||||
local level = level_of(priority)
|
||||
|
||||
-- If format starts with a *, remove it, as we're adding our own
|
||||
-- prefix here.
|
||||
if format:sub(1,1) == "*" then
|
||||
format = format:sub(2)
|
||||
end
|
||||
|
||||
format = "*%evt.time: "..priority.." "..format
|
||||
format = "*%evt.time: "..levels[level+1].." "..format
|
||||
|
||||
msg = formats.format_event(event, rule, priority, format)
|
||||
msg = formats.format_event(event, rule, levels[level+1], format)
|
||||
|
||||
for index,o in ipairs(outputs) do
|
||||
o.output(priority, priority_num, o.buffered, msg, o.config)
|
||||
o.output(level, msg, o.config)
|
||||
end
|
||||
end
|
||||
|
||||
function output_cleanup()
|
||||
formats.free_formatters()
|
||||
for index,o in ipairs(outputs) do
|
||||
o.cleanup()
|
||||
end
|
||||
end
|
||||
|
||||
function add_output(output_name, buffered, config)
|
||||
function add_output(output_name, config)
|
||||
if not (type(mod[output_name]) == 'function') then
|
||||
error("rule_loader.add_output(): invalid output_name: "..output_name)
|
||||
end
|
||||
@@ -148,9 +105,7 @@ function add_output(output_name, buffered, config)
|
||||
mod[output_name.."_validate"](config)
|
||||
end
|
||||
|
||||
table.insert(outputs, {output = mod[output_name],
|
||||
cleanup = mod[output_name.."_cleanup"],
|
||||
buffered=buffered, config=config})
|
||||
table.insert(outputs, {output = mod[output_name], config=config})
|
||||
end
|
||||
|
||||
return mod
|
||||
|
||||
Reference in New Issue
Block a user