UBUNTU-CVE-2021-44758

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    UBUNTU-CVE-2021-44758

    Published: 26 Dec 2022Last Modified: 20 May 2026
    Upstream:
    CVE-2021-44758
    Aliases:
    USN-5800-1

    Summary:

    Details: Heimdal before 7.7.1 allows attackers to cause a NULL pointer dereference in a SPNEGO acceptor via a preferred_mech_type of GSS_C_NO_OID and a nonzero initial_response value to send_accept.

    References: https://ubuntu.com/security/CVE-2021-44758, https://github.com/heimdal/heimdal/security/advisories/GHSA-69h9-669w-88xv, https://ubuntu.com/security/notices/USN-5800-1, https://www.cve.org/CVERecord?id=CVE-2021-44758

    Affected packages

    Package

    Name: heimdal

    Purl: pkg:deb/ubuntu/heimdal?arch=source&distro=trusty%2Fesm

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -1.6~git20131207+dfsg-1ubuntu1.2+esm3

    Affected versions

    1.6~git20120403+dfsg1-3ubuntu0.1
    1.6~git20120403+dfsg1-3ubuntu0.2

    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-2021-44758 | CVE-DB