CVE-2021-20319

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    CVE-2021-20319

    Published: 4 Mar 2022Last Modified: 20 Oct 2026

    Summary:

    Details: An improper signature verification vulnerability was found in coreos-installer. A specially crafted gzip installation image can bypass the image signature verification and as a consequence can lead to the installation of unsigned content. An attacker able to modify the original installation image can write arbitrary data, and achieve full access to the node being installed.

    References: https://github.com/coreos/coreos-installer/security/advisories/GHSA-3r3g-g73x-g593, https://bugzilla.redhat.com/show_bug.cgi?id=2011862, https://github.com/coreos/coreos-installer/pull/659/commits/ad243c6f0eff2835b2da56ca5f7f33af76253c89

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -34474058438d493c9b91bf49d80f47356031771e

    Affected versions

    v0.10.0

    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
    CVE-2021-20319 | CVE-DB