Incorrect authorization in buildah - CVE-2022-2990

Vulnerability identifier: #VU69291

CSH Severity: Low

CVSS v4.0: 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-2022-2990

CWE-ID: CWE-863

Exploitation vector: Local access

Exploit availability: No public exploit available

Vendor: Container Projects

Affected software:
buildah

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

The vulnerability exists due to incorrect handling of the supplementary groups in the Buildah container engine. A local user with direct access to the affected container where supplementary groups are used can set access permissions and execute a binary code in that container.

Install updates from vendor's website.

• https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation/
• https://bugzilla.redhat.com/show_bug.cgi?id=2121453