CVE Vulnerability

CVE-2023-25173

containerd is an open source container runtime. A bug was found in containerd prior to versions 1.6.18 and 1.5.18 where supplementary groups are not set up properly inside a container. If an attacker has direct access to a container and manipulates their supplementary group access, they may be able to use supplementary group access to bypass primary group restrictions in some cases, potentially gaining access to sensitive information or gaining the ability to execute code in that container. Downstream applications that use the containerd client library may be affected as well. This bug has been fixed in containerd v1.6.18 and v.1.5.18. Users should update to these versions and recreate containers to resolve this issue. Users who rely on a downstream application that uses containerd's client library should check that application for a separate advisory and instructions. As a workaround, ensure that the `"USER $USERNAME"` Dockerfile instruction is not used. Instead, set the container entrypoint to a value similar to `ENTRYPOINT ["su", "-", "user"]` to allow `su` to properly set up supplementary groups.

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/advisories/GHSA-phjr-8j92-w5v7 Not Applicable
https://github.com/containerd/containerd/commit/133f6bb6cd827ce35a5fb279c1ead12b9d21460a Patch
https://github.com/containerd/containerd/releases/tag/v1.5.18 Release Notes
https://github.com/containerd/containerd/releases/tag/v1.6.18 Release Notes
https://github.com/advisories/GHSA-4wjj-jwc9-2x96 Not Applicable
https://www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation/ Exploit Third Party Advisory
https://github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4 Not Applicable
https://github.com/containerd/containerd/security/advisories/GHSA-hmfx-3pcx-653p Mitigation Vendor Advisory
https://github.com/advisories/GHSA-fjm8-m7m6-2fjp Not Applicable
Configurations

Configuration 1

cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*
cpe:2.3:a:linuxfoundation:containerd:*:*:*:*:*:*:*:*
Information

Published : 2023-02-16 03:15

Updated : 2023-02-24 04:56

NVD link : CVE-2023-25173

Mitre link : CVE-2023-25173

Products Affected
No products.
CWE
No CWE.