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Changed Rule focus to be broader then just a specific CVE

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Signed-off-by: darryk10 <stefano.chierici@sysdig.com>
Co-authored-by: Lorenzo Susini <susinilorenzo1@gmail.com>
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Stefano 2022-04-15 12:04:30 +02:00 committed by poiana
parent 2e2b13236b
commit c3bcf604a5
1 changed files with 5 additions and 6 deletions
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rules/falco_rules.yaml
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@ -3165,14 +3165,13 @@
priority: CRITICAL priority: CRITICAL
tags: [process, mitre_privilege_escalation] tags: [process, mitre_privilege_escalation]
# This rule helps detect CVE-2022-0492:
# A privilege escalation container escaping in cgroup - rule: Detect release_agent File Container Escapes
- rule: Linux Cgroup Container Escape Vulnerability (CVE-2022-0492) desc: "This rule detect an attempt to exploit a container escape using release_agent file. By running a container with certains capabilities, a privileged user can modify release_agent file and escape from the container"
desc: "Detect an attempt to exploit a container escape vulnerability in the Linux Kernel (CVE-2022-0492). By running a container with certains capabilities, a privileged user can modify release_agent file and escape from the container"
condition: condition:
open_write and fd.name endswith release_agent and (user.uid=0 or thread.cap_permitted contains CAP_DAC_OVERRIDE) and excessively_capable_container open_write and container and fd.name endswith release_agent and (user.uid=0 or thread.cap_permitted contains CAP_DAC_OVERRIDE) and thread.cap_effective contains CAP_SYS_ADMIN
output: output:
"Detect cgroup container escaping attempt (CVE-2022-0492) (user=%user.name user_loginuid=%user.loginuid filename=%fd.name %container.info image=%container.image.repository:%container.image.tag cap_permitted=%thread.cap_permitted)" "Detect an attempt to exploit a container escape using release_agent file (user=%user.name user_loginuid=%user.loginuid filename=%fd.name %container.info image=%container.image.repository:%container.image.tag cap_effective=%thread.cap_effective)"
priority: CRITICAL priority: CRITICAL
tags: [container, mitre_privilege_escalation, mitre_lateral_movement] tags: [container, mitre_privilege_escalation, mitre_lateral_movement]