USN-5100-1

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    USN-5100-1

    Published: 4 Oct 2021Last Modified: 10 Feb 2026

    Summary: containerd vulnerability

    Details: It was discovered that containerd insufficiently restricted permissions on container root and plugin directories. If a user or automated system were tricked into launching a specially crafted container image, a remote attacker could traverse directory contents and modify files and execute programs on the host filesystem, possibly leading to privilege escalation.

    References: https://ubuntu.com/security/notices/USN-5100-1, https://ubuntu.com/security/CVE-2021-41103

    Affected packages

    Package

    Name: containerd

    Purl: pkg:deb/ubuntu/[email protected]~18.04.3?arch=source&distro=bionic

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.5.2-0ubuntu1~18.04.3

    Affected versions

    0.2.5-0ubuntu2

    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
    USN-5100-1 | CVE-DB