UBUNTU-CVE-2021-21285

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    UBUNTU-CVE-2021-21285

    Published: 2 Feb 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-21285

    Summary:

    Details: In Docker before versions 9.03.15, 20.10.3 there is a vulnerability in which pulling an intentionally malformed Docker image manifest crashes the dockerd daemon. Versions 20.10.3 and 19.03.15 contain patches that prevent the daemon from crashing.

    References: https://ubuntu.com/security/CVE-2021-21285, https://github.com/moby/moby/security/advisories/GHSA-6fj5-m822-rqx8, https://docs.docker.com/engine/release-notes/#20103, https://github.com/moby/moby/commit/8d3179546e79065adefa67cc697c09d0ab137d30, https://github.com/moby/moby/releases/tag/v19.03.15, https://github.com/moby/moby/releases/tag/v20.10.3, https://ubuntu.com/security/notices/USN-5032-1, https://ubuntu.com/security/notices/USN-5032-2, https://www.cve.org/CVERecord?id=CVE-2021-21285

    Affected packages

    Package

    Name: docker.io

    Purl: pkg:deb/ubuntu/[email protected]~16.04.9+esm2?arch=source&distro=esm-infra/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.6.2~dfsg1-1ubuntu4

    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
    UBUNTU-CVE-2021-21285 | CVE-DB