QID 980093

QID 980093: Go (go) Security Update for github.com/containerd/containerd (GHSA-c2h3-6mxw-7mvq)

Security update has been released for github.com/containerd/containerd to fix the vulnerability.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

A bug was found in containerd where container root directories and some plugins had insufficiently restricted permissions, allowing otherwise unprivileged Linux users to traverse directory contents and execute programs. When containers included executable programs with extended permission bits (such as setuid), unprivileged Linux users could discover and execute those programs. When the UID of an unprivileged Linux user on the host collided with the file owner or group inside a container, the unprivileged Linux user on the host could discover, read, and modify those files.

  • CVSS V3 rated as High - 7.8 severity.
  • CVSS V2 rated as High - 7.2 severity.
    • Solution
    This vulnerability has been fixed in containerd 1.4.11 and containerd 1.5.7. Users should update to these version when they are released and may restart containers or update directory permissions to mitigate the vulnerability.Workaround:
    Limit access to the host to trusted users. Update directory permission on container bundles directories.
    Vendor References

    CVEs related to QID 980093

    CVE-2021-41103 |
    Software Advisories
    Advisory ID Software Component Link
    GHSA-c2h3-6mxw-7mvq github.com/containerd/containerd URL Logo github.com/advisories/GHSA-c2h3-6mxw-7mvq
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