UBUNTU-CVE-2020-21048

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    UBUNTU-CVE-2020-21048

    Published: 14 Sept 2021Last Modified: 22 Apr 2026
    Upstream:
    CVE-2020-21048

    Summary:

    Details: An issue in the dither.c component of libsixel prior to v1.8.4 allows attackers to cause a denial of service (DOS) via a crafted PNG file.

    References: https://ubuntu.com/security/CVE-2020-21048, https://github.com/saitoha/libsixel/issues/73, https://github.com/saitoha/libsixel/commit/cb373ab6614c910407c5e5a93ab935144e62b037, https://github.com/saitoha/libsixel/commit/26ac06f3623279348f0dce2d191a9b6ca0c80226, https://github.com/saitoha/libsixel/releases/tag/v1.8.4, https://github.com/saitoha/libsixel/blob/master/ChangeLog, https://bitbucket.org/netbsd/pkgsrc/commits/6f0c011cbfccdffa635d04c84433b1a02687adad, https://www.cve.org/CVERecord?id=CVE-2020-21048

    Affected packages

    Package

    Name: libsixel

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

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    1.4.2-1

    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
    UBUNTU-CVE-2020-21048 | CVE-DB