#VU62796 Incorrect default permissions in CRI-O - CVE-2022-27652

Vulnerability identifier: #VU62796

Vulnerability risk: Low

CVSSv4.0: 5.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-27652

CWE-ID: CWE-276

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
CRI-O
Server applications / Virtualization software

Vendor: CRI-O

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to containers are incorrectly started with non-empty default permissions within in Moby (Docker Engine). An attacker with access to programs with inheritable file capabilities can elevate those capabilities to the permitted set when execve(2) runs.

Mitigation
Install update from vendor's website.

Vulnerable software versions

CRI-O: 0.0.0 - 0.3, 1.0.0 - 1.0.9, 1.8.0 - 1.8.5, 1.9.0 - 1.9.16, 1.10.0 - 1.10.6, 1.11.0 - 1.11.15, 1.12.0 - 1.12.10, 1.13.0 - 1.13.12, 1.14.0 - 1.14.12, 1.15.0 - 1.15.4, 1.16.0 - 1.16.6, 1.17.0 - 1.17.5, 1.18.0 - 1.18.6, 1.19.0 - 1.19.6, 1.20.0 - 1.20.7, 1.21.0 - 1.21.6, 1.22.0 - 1.22.3, 1.23.0 - 1.23.2

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External links
https://github.com/cri-o/cri-o/security/advisories/GHSA-4hj2-r2pm-3hc6
https://bugzilla.redhat.com/show_bug.cgi?id=2066839

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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.