#VU72321 Improper Privilege Management in moby - CVE-2022-36109

Vulnerability identifier: #VU72321

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-36109

CWE-ID: CWE-269

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
moby
Server applications / Virtualization software

Vendor: Moby project

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

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

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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.