Privilege escalation in Moby

1) Improper Privilege Management

EUVDB-ID: #VU72321

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-36109

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges.

The vulnerability exists due to improper privilege management caused by improper setup of supplementary groups. A local user can bypass primary group restrictions and compromise the container.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

moby: 20.10.0 - 20.10.17

External links

http://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4
http://github.com/moby/moby/commit/de7af816e76a7fd3fbf06bffa6832959289fba32
http://github.com/moby/moby/releases/tag/v20.10.18
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RQQ4E3JBXVR3VK5FIZVJ3QS2TAOOXXTQ/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O7JL2QA3RB732MLJ3RMUXB3IB7AA22YU/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.