github/falco
1
0
Fork 0
mirror of https://github.com/falcosecurity/falco.git synced 2025-07-12 14:08:27 +00:00
Code Issues Projects Releases Wiki Activity

Update fbash rules to use proc.sname.

Browse Source 
Update fbash rules to use proc.sname instead of proc.aname and to rely
on sessions instead of process ancestors.

I also wanted to add details on the address/port being listened to but
that's blocked on https://github.com/draios/falco/issues/86.

Along with this change, there are new positive trace files
installer-bash-starts-network-server.scap and
installer-bash-starts-session.scap that test these updated rules.
This commit is contained in:
Mark Stemm 2016-05-31 17:41:08 -07:00
parent e9cdd46838
commit 31c87c295a
1 changed files with 6 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
rules/falco_rules.yaml
View File

@ -312,15 +312,15 @@
# fbash is a small shell script that runs bash, and is suitable for use in curl <curl> | fbash installers. # fbash is a small shell script that runs bash, and is suitable for use in curl <curl> | fbash installers.
- rule: installer_bash_starts_network_server - rule: installer_bash_starts_network_server
desc: an attempt by any program that is a child of fbash to start listening for network connections desc: an attempt by any program that is in a session led by fbash to start listening for network connections
condition: evt.type=listen and proc.aname=fbash condition: evt.type=listen and proc.sname=fbash
output: "Unexpected listen call by a child process of fbash (command=%proc.cmdline)" output: "Unexpected listen call by a process in a fbash session (command=%proc.cmdline)"
priority: WARNING priority: WARNING
- rule: installer_bash_starts_session - rule: installer_bash_starts_session
desc: an attempt by any program that is a child of fbash to start a new session (process group) desc: an attempt by any program that is in a session led by fbash to start a new session
condition: evt.type=setsid and proc.aname=fbash condition: evt.type=setsid and proc.sname=fbash
output: "Unexpected setsid call by a child process of fbash (command=%proc.cmdline)" output: "Unexpected setsid call by a process in fbash session (command=%proc.cmdline)"
priority: WARNING priority: WARNING
########################### ###########################