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  5. CVE-2023-25173

CVE-2023-25173: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

February 16, 2023 (updated September 15, 2023)

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.

References

  • github.com/advisories/GHSA-4wjj-jwc9-2x96
  • github.com/advisories/GHSA-fjm8-m7m6-2fjp
  • github.com/advisories/GHSA-hmfx-3pcx-653p
  • github.com/advisories/GHSA-phjr-8j92-w5v7
  • github.com/containerd/containerd/commit/133f6bb6cd827ce35a5fb279c1ead12b9d21460a
  • github.com/containerd/containerd/releases/tag/v1.5.18
  • github.com/containerd/containerd/releases/tag/v1.6.18
  • github.com/containerd/containerd/security/advisories/GHSA-hmfx-3pcx-653p
  • github.com/moby/moby/security/advisories/GHSA-rc4r-wh2q-q6c4
  • nvd.nist.gov/vuln/detail/CVE-2023-25173
  • www.benthamsgaze.org/2022/08/22/vulnerability-in-linux-containers-investigation-and-mitigation/

Code Behaviors & Features

Detect and mitigate CVE-2023-25173 with GitLab Dependency Scanning

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Affected versions

All versions before 1.5.18, all versions starting from 1.6.0 before 1.6.18

Fixed versions

  • v1.5.18
  • v1.6.18

Solution

Upgrade to versions 1.5.18, 1.6.18 or above.

Impact 7.8 HIGH

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

Learn more about CVSS

Weakness

  • CWE-863: Incorrect Authorization

Source file

go/github.com/containerd/containerd/CVE-2023-25173.yml

Spotted a mistake? Edit the file on GitLab.

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