CVE-2019-3969: Comodo Antivirus Privilege Escalation

Comodo Antivirus versions up to 12.0.0.6810 are vulnerable to Local Privilege Escalation due to CmdAgent’s handling of COM clients. A local process can bypass the signature check enforced by CmdAgent via process hollowing which can then allow the process to invoke sensitive COM methods in CmdAgent such as writing to the registry with SYSTEM privileges.

Recent assessments:

space-r7 at July 24, 2019 5:33pm UTC reported:

This is a very well-written research paper, with lots of artifacts and a Github-hosted PoC. As privesc’s go, this looks pretty reliable. Since I’m not seeing any publications from Comodo yet, this may still be useful in the wild.

asoto-r7 at July 24, 2019 8:51pm UTC reported:

This is a very well-written research paper, with lots of artifacts and a Github-hosted PoC. As privesc’s go, this looks pretty reliable. Since I’m not seeing any publications from Comodo yet, this may still be useful in the wild.

Assessed Attacker Value: 4
Assessed Attacker Value: 4Assessed Attacker Value: 4