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0.12.0
falco/test/falco_tests.yaml
Mark Stemm 512a36dfe1 Conditional rules (#364) 
* Add ability to skip rules for unknown filters

Add the ability to skip a rule if its condition refers to a filtercheck
that doesn't exist. This allows defining a rules file that contains new
conditions that can still has limited backward compatibility with older
falco versions.

When compiling a filter, return a list of filtercheck names that are
present in the ast (which also includes filterchecks from any
macros). This set of filtercheck names is matched against the set of
filterchecks known to sinsp, expressed as lua patterns, and in the
global table defined_filters. If no match is found, the rule loader
throws an error.

The pattern changes slightly depending on whether the filter has
arguments or not. Two filters (proc.apid/proc.aname) can work with or
without arguments, so both styles of patterns are used.

If the rule has an attribute "skip-if-unknown-filter", the rule will be
skipped instead.

* Unit tests for skipping unknown filter

New unit test for skipping unknown filter. Test cases:

 - A rule that refers to an unknown filter results in an error.
 - A rule that refers to an unknown filter, but has
   "skip-if-unknown-filter: true", can be read, but doesn't match any events.
 - A rule that refers to an unknown filter, but has
   "skip-if-unknown-filter: false", returns an error.

Also test the case of a filtercheck like evt.arg.xxx working properly
with the embedded patterns as well as proc.aname/apid which work both ways.
2018-05-03 14:24:32 -07:00

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trace_files: !mux
docker_package:
package: docker:sysdig/falco:test
detect: True
detect_level: WARNING
rules_file: /host/rules/rule_names_with_spaces.yaml
trace_file: /host/traces/cat_write.scap
conf_file: /host/conf/falco.yaml
# This uses a volume mount to overwrite and prevent /usr/sbin/dkms
# from being run. As a result, it will force falco-probe-loader to
# fall back to loading the driver from ~/.sysdig. Setting
# copy_local_driver to True copied the driver to ~/.sysdig, so it
# will be available. In this case, we're running live for 5 seconds
# just to see if falco can load the driver.
docker_package_local_driver:
package: docker:sysdig/falco:test
addl_docker_run_args: -v /dev/null:/usr/sbin/dkms
copy_local_driver: True
detect: False
detect_level: WARNING
rules_file: /host/rules/tagged_rules.yaml
conf_file: /host/conf/falco.yaml
run_duration: 5
debian_package:
package: falco*.deb
detect: True
detect_level: WARNING
rules_file:
- rules/rule_names_with_spaces.yaml
trace_file: trace_files/cat_write.scap
builtin_rules_no_warnings:
detect: False
trace_file: trace_files/empty.scap
rules_warning: False
test_warnings:
detect: False
trace_file: trace_files/empty.scap
rules_file: rules/falco_rules_warnings.yaml
rules_warning:
- no_evttype
- evttype_not_equals
- leading_not
- not_equals_at_end
- not_at_end
- not_before_trailing_evttype
- not_equals_before_trailing_evttype
- not_equals_and_not
- not_equals_before_in
- not_before_in
- not_in_before_in
- leading_in_not_equals_before_evttype
- leading_in_not_equals_at_evttype
- not_with_evttypes
- not_with_evttypes_addl
- not_equals_before_evttype
- not_equals_before_in_evttype
- not_before_evttype
- not_before_evttype_using_in
rules_events:
- no_warnings: [execve]
- no_evttype: [all]
- evttype_not_equals: [all]
- leading_not: [all]
- not_equals_after_evttype: [execve]
- not_after_evttype: [execve]
- leading_trailing_evttypes: [execve,open]
- leading_multtrailing_evttypes: [connect,execve,open]
- leading_multtrailing_evttypes_using_in: [connect,execve,open]
- not_equals_at_end: [all]
- not_at_end: [all]
- not_before_trailing_evttype: [all]
- not_equals_before_trailing_evttype: [all]
- not_equals_and_not: [all]
- not_equals_before_in: [all]
- not_before_in: [all]
- not_in_before_in: [all]
- evttype_in: [execve,open]
- evttype_in_plus_trailing: [connect,execve,open]
- leading_in_not_equals_before_evttype: [all]
- leading_in_not_equals_at_evttype: [all]
- not_with_evttypes: [all]
- not_with_evttypes_addl: [all]
- not_equals_before_evttype: [all]
- not_equals_before_in_evttype: [all]
- not_before_evttype: [all]
- not_before_evttype_using_in: [all]
- repeated_evttypes: [open]
- repeated_evttypes_with_in: [open]
- repeated_evttypes_with_separate_in: [open]
- repeated_evttypes_with_mix: [open]
rule_names_with_spaces:
detect: True
detect_level: WARNING
rules_file:
- rules/rule_names_with_spaces.yaml
trace_file: trace_files/cat_write.scap
multiple_rules_first_empty:
detect: True
detect_level: WARNING
rules_file:
- rules/empty_rules.yaml
- rules/single_rule.yaml
trace_file: trace_files/cat_write.scap
multiple_rules_last_empty:
detect: True
detect_level: WARNING
rules_file:
- rules/single_rule.yaml
- rules/empty_rules.yaml
trace_file: trace_files/cat_write.scap
multiple_rules:
detect: True
detect_level:
- WARNING
- INFO
- ERROR
rules_file:
- rules/single_rule.yaml
- rules/double_rule.yaml
trace_file: trace_files/cat_write.scap
all_events: True
rules_directory:
detect: True
detect_level:
- WARNING
- INFO
- ERROR
rules_file:
- rules/rules_dir
trace_file: trace_files/cat_write.scap
all_events: True
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
all_events: True
multiple_rules_overriding:
detect: False
rules_file:
- rules/single_rule.yaml
- rules/override_rule.yaml
trace_file: trace_files/cat_write.scap
macro_overriding:
detect: False
rules_file:
- rules/single_rule.yaml
- rules/override_macro.yaml
trace_file: trace_files/cat_write.scap
list_overriding:
detect: False
rules_file:
- rules/single_rule.yaml
- rules/override_list.yaml
trace_file: trace_files/cat_write.scap
nested_list_overriding:
detect: False
rules_file:
- rules/single_rule.yaml
- 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."
rules_file:
- rules/invalid_rule_output.yaml
trace_file: trace_files/cat_write.scap
disabled_rules:
detect: False
rules_file:
- rules/empty_rules.yaml
- rules/single_rule.yaml
disabled_rules:
- open_from_cat
trace_file: trace_files/cat_write.scap
disabled_rules_using_regex:
detect: False
rules_file:
- rules/empty_rules.yaml
- rules/single_rule.yaml
disabled_rules:
- "open.*"
trace_file: trace_files/cat_write.scap
disabled_rules_using_enabled_flag:
detect: False
rules_file:
- rules/single_rule_enabled_flag.yaml
trace_file: trace_files/cat_write.scap
disabled_and_enabled_rules_1:
exit_status: 1
stderr_contains: "Runtime error: You can not specify both disabled .-D/-T. and enabled .-t. rules. Exiting."
disable_tags: [a]
run_tags: [a]
rules_file:
- rules/single_rule.yaml
trace_file: trace_files/cat_write.scap
disabled_and_enabled_rules_2:
exit_status: 1
stderr_contains: "Runtime error: You can not specify both disabled .-D/-T. and enabled .-t. rules. Exiting."
disabled_rules:
- "open.*"
run_tags: [a]
rules_file:
- rules/single_rule.yaml
trace_file: trace_files/cat_write.scap
null_output_field:
detect: True
detect_level: WARNING
rules_file:
- rules/null_output_field.yaml
trace_file: trace_files/cat_write.scap
stdout_contains: "Warning An open was seen .cport=<NA> command=cat /dev/null."
file_output:
detect: True
detect_level: WARNING
rules_file:
- rules/single_rule.yaml
conf_file: confs/file_output.yaml
trace_file: trace_files/cat_write.scap
outputs:
- /tmp/falco_outputs/file_output.txt: Warning An open was seen
program_output:
detect: True
detect_level: WARNING
rules_file:
- rules/single_rule.yaml
conf_file: confs/program_output.yaml
trace_file: trace_files/cat_write.scap
outputs:
- /tmp/falco_outputs/program_output.txt: Warning An open was seen
detect_counts:
detect: True
detect_level: WARNING
trace_file: traces-positive/falco-event-generator.scap
detect_counts:
- "Write below binary dir": 1
- "Read sensitive file untrusted": 3
- "Run shell untrusted": 1
- "Write below rpm database": 1
- "Write below etc": 1
- "System procs network activity": 1
- "Mkdir binary dirs": 1
- "System user interactive": 1
- "DB program spawned process": 1
- "Non sudo setuid": 1
- "Create files below dev": 1
- "Modify binary dirs": 2
- "Change thread namespace": 2
disabled_tags_a:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
disable_tags: [a]
detect_counts:
- open_1: 0
- open_2: 1
- open_3: 1
- open_4: 0
- open_5: 0
- open_6: 1
- open_7: 0
- open_8: 0
- open_9: 0
- open_10: 0
- open_11: 1
- open_12: 1
- open_13: 1
disabled_tags_b:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
disable_tags: [b]
detect_counts:
- open_1: 1
- open_2: 0
- open_3: 1
- open_4: 0
- open_5: 1
- open_6: 0
- open_7: 0
- open_8: 0
- open_9: 1
- open_10: 0
- open_11: 1
- open_12: 1
- open_13: 1
disabled_tags_c:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
disable_tags: [c]
detect_counts:
- open_1: 1
- open_2: 1
- open_3: 0
- open_4: 1
- open_5: 0
- open_6: 0
- open_7: 0
- open_8: 1
- open_9: 0
- open_10: 0
- open_11: 1
- open_12: 1
- open_13: 1
disabled_tags_ab:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
disable_tags: [a, b]
detect_counts:
- open_1: 0
- open_2: 0
- open_3: 1
- open_4: 0
- open_5: 0
- open_6: 0
- open_7: 0
- open_8: 0
- open_9: 0
- open_10: 0
- open_11: 1
- open_12: 1
- open_13: 1
disabled_tags_abc:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
disable_tags: [a, b, c]
detect_counts:
- open_1: 0
- open_2: 0
- open_3: 0
- open_4: 0
- open_5: 0
- open_6: 0
- open_7: 0
- open_8: 0
- open_9: 0
- open_10: 0
- open_11: 1
- open_12: 1
- open_13: 1
run_tags_a:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
run_tags: [a]
detect_counts:
- open_1: 1
- open_2: 0
- open_3: 0
- open_4: 1
- open_5: 1
- open_6: 0
- open_7: 1
- open_8: 1
- open_9: 1
- open_10: 1
- open_11: 0
- open_12: 0
- open_13: 0
run_tags_b:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
run_tags: [b]
detect_counts:
- open_1: 0
- open_2: 1
- open_3: 0
- open_4: 1
- open_5: 0
- open_6: 1
- open_7: 1
- open_8: 1
- open_9: 0
- open_10: 1
- open_11: 0
- open_12: 0
- open_13: 0
run_tags_c:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
run_tags: [c]
detect_counts:
- open_1: 0
- open_2: 0
- open_3: 1
- open_4: 0
- open_5: 1
- open_6: 1
- open_7: 1
- open_8: 0
- open_9: 1
- open_10: 1
- open_11: 0
- open_12: 0
- open_13: 0
run_tags_ab:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
run_tags: [a, b]
detect_counts:
- open_1: 1
- open_2: 1
- open_3: 0
- open_4: 1
- open_5: 1
- open_6: 1
- open_7: 1
- open_8: 1
- open_9: 1
- open_10: 1
- open_11: 0
- open_12: 0
- open_13: 0
run_tags_bc:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
run_tags: [b, c]
detect_counts:
- open_1: 0
- open_2: 1
- open_3: 1
- open_4: 1
- open_5: 1
- open_6: 1
- open_7: 1
- open_8: 1
- open_9: 1
- open_10: 1
- open_11: 0
- open_12: 0
- open_13: 0
run_tags_abc:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
run_tags: [a, b, c]
detect_counts:
- open_1: 1
- open_2: 1
- open_3: 1
- open_4: 1
- open_5: 1
- open_6: 1
- open_7: 1
- open_8: 1
- open_9: 1
- open_10: 1
- open_11: 0
- open_12: 0
- open_13: 0
run_tags_d:
detect: True
detect_level: WARNING
rules_file:
- rules/tagged_rules.yaml
trace_file: trace_files/open-multiple-files.scap
run_tags: [d]
detect_counts:
- open_1: 0
- open_2: 0
- open_3: 0
- open_4: 0
- open_5: 0
- open_6: 0
- open_7: 0
- open_8: 0
- open_9: 0
- open_10: 0
- 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_skipped:
detect: False
priority: ERROR
rules_file:
- rules/single_rule.yaml
- rules/append_single_rule.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
json_output_no_output_property:
json_output: True
json_include_output_property: False
detect: True
detect_level: WARNING
rules_file:
- rules/rule_append.yaml
trace_file: trace_files/cat_write.scap
stdout_contains: "^(?!.*Warning An open of /dev/null was seen.*)"
in_operator_netmasks:
detect: True
detect_level: INFO
rules_file:
- rules/detect_connect_using_in.yaml
trace_file: trace_files/connect_localhost.scap
syscalls:
detect: True
detect_level: INFO
rules_file:
- rules/syscalls.yaml
detect_counts:
- detect_madvise: 2
- detect_open: 2
trace_file: trace_files/syscall.scap
all_events: True
catchall_order:
detect: True
detect_level: INFO
rules_file:
- rules/catchall_order.yaml
detect_counts:
- open_dev_null: 1
dev_null: 0
trace_file: trace_files/cat_write.scap
skip_unknown_noevt:
detect: False
stdout_contains: Skipping rule "Contains Unknown Event And Skipping" that contains unknown filter proc.nobody
rules_file:
- rules/skip_unknown_evt.yaml
trace_file: trace_files/cat_write.scap
skip_unknown_prefix:
detect: False
rules_file:
- rules/skip_unknown_prefix.yaml
trace_file: trace_files/cat_write.scap
skip_unknown_error:
exit_status: 1
stderr_contains: Rule "Contains Unknown Event And Not Skipping" contains unknown filter proc.nobody. Exiting.
rules_file:
- rules/skip_unknown_error.yaml
trace_file: trace_files/cat_write.scap
skip_unknown_unspec_error:
exit_status: 1
stderr_contains: Rule "Contains Unknown Event And Unspecified" contains unknown filter proc.nobody. Exiting.
rules_file:
- rules/skip_unknown_unspec.yaml
trace_file: trace_files/cat_write.scap
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