Emerging Threathightest
PwnKit Local Privilege Escalation
Detects potential PwnKit exploitation CVE-2021-4034 in auth logs
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Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
Linuxauth
ProductLinux← raw: linux
Serviceauth← raw: auth
Detection Logic
Detection Logic1 selector
detection:
keywords:
'|all':
- 'pkexec'
- 'The value for environment variable XAUTHORITY contains suspicious content'
- '[USER=root] [TTY=/dev/pts/0]'
condition: keywordsFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Sub-techniques
Other
detection.emerging-threatscve.2021-4034
Rule Metadata
Rule ID
0506a799-698b-43b4-85a1-ac4c84c720e9
Status
test
Level
high
Type
Emerging Threat
Created
Wed Jan 26
Modified
Wed Sep 11
Author
Path
rules-emerging-threats/2021/Exploits/CVE-2021-4034/lnx_auth_exploit_cve_2021_4034_pwnkit_lpe.yml
Raw Tags
attack.defense-evasionattack.privilege-escalationattack.t1548.001detection.emerging-threatscve.2021-4034