Description

containerd is an open-source container runtime. A bug was found in containerd prior to versions 1.6.38, 1.7.27, and 2.0.4 where containers launched with a User set as a `UID:GID` larger than the maximum 32-bit signed integer can cause an overflow condition where the container ultimately runs as root (UID 0). This could cause unexpected behavior for environments that require containers to run as a non-root user. This bug has been fixed in containerd 1.6.38, 1.7.27, and 2.04. As a workaround, ensure that only trusted images are used and that only trusted users have permissions to import images.

Classification

CVE ID: CVE-2024-40635

CVSS Base Severity: MEDIUM

CVSS Base Score: 4.6

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N

Affected Products

Vendor: containerd

Product: containerd

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.02% (probability of being exploited)

EPSS Percentile: 1.82% (scored less or equal to compared to others)

EPSS Date: 2025-04-15 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2024-40635
https://github.com/containerd/containerd/security/advisories/GHSA-265r-hfxg-fhmg
https://github.com/containerd/containerd/commit/05044ec0a9a75232cad458027ca83437aae3f4da
https://github.com/containerd/containerd/commit/1a43cb6a1035441f9aca8f5666a9b3ef9e70ab20
https://github.com/containerd/containerd/commit/cf158e884cfe4812a6c371b59e4ea9bc4c46e51a

Timeline