UBUNTU-CVE-2021-20291

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    UBUNTU-CVE-2021-20291

    Published: 1 Apr 2021Last Modified: 24 Oct 2025
    Upstream:
    CVE-2021-20291

    Summary:

    Details: A deadlock vulnerability was found in 'github.com/containers/storage' in versions before 1.28.1. When a container image is processed, each layer is unpacked using `tar`. If one of those layers is not a valid `tar` archive this causes an error leading to an unexpected situation where the code indefinitely waits for the tar unpacked stream, which never finishes. An attacker could use this vulnerability to craft a malicious image, which when downloaded and stored by an application using containers/storage, would then cause a deadlock leading to a Denial of Service (DoS).

    References: https://ubuntu.com/security/CVE-2021-20291, https://bugzilla.redhat.com/show_bug.cgi?id=1939485, https://www.cve.org/CVERecord?id=CVE-2021-20291, https://github.com/containers/storage/commit/306fcabc964470e4b3b87a43a8f6b7d698209ee1

    Affected packages

    Package

    Name: golang-github-containers-storage

    Purl: pkg:deb/ubuntu/[email protected]+dfsg1-1ubuntu2.1?arch=source&distro=focal

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.13.2+dfsg1-2
    1.13.2+dfsg1-3
    1.13.5+dfsg1-1

    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
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