GHSA-c2h3-6mxw-7mvq

    Dashboard / Vulnerabilities / GHSA-c2h3-6mxw-7mvq

    GHSA-c2h3-6mxw-7mvq

    Published: 4 Oct 2021Last Modified: 10 Sept 2026

    Summary: Insufficiently restricted permissions on plugin directories

    Details: ### Impact 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. ### Patches 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. ### Workarounds Limit access to the host to trusted users. Update directory permission on container bundles directories. ### For more information If you have any questions or comments about this advisory: * Open an issue in [github.com/containerd/containerd](https://github.com/containerd/containerd/issues/new/choose) * Email us at [[email protected]](mailto:[email protected])

    References: https://github.com/containerd/containerd/security/advisories/GHSA-c2h3-6mxw-7mvq, https://nvd.nist.gov/vuln/detail/CVE-2021-41103, https://github.com/containerd/containerd/commit/5b46e404f6b9f661a205e28d59c982d3634148f8, https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf, https://github.com/containerd/containerd, https://github.com/containerd/containerd/releases/tag/v1.4.11, https://github.com/containerd/containerd/releases/tag/v1.5.7, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB, https://lists.fedoraproject.org/archives/list/[email protected]/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB, https://lists.fedoraproject.org/archives/list/[email protected]/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB, https://security.gentoo.org/glsa/202401-31, https://www.debian.org/security/2021/dsa-5002

    Affected packages

    Package

    Name: github.com/containerd/containerd

    Purl: pkg:golang/github.com/containerd/containerd

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -1.4.11

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    GHSA-c2h3-6mxw-7mvq | CVE-DB