UBUNTU-CVE-2022-3437

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    UBUNTU-CVE-2022-3437

    Published: 27 Oct 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2022-3437
    Aliases:
    USN-5800-1
    USN-5822-1
    USN-5822-2

    Summary:

    Details: A heap-based buffer overflow vulnerability was found in Samba within the GSSAPI unwrap_des() and unwrap_des3() routines of Heimdal. The DES and Triple-DES decryption routines in the Heimdal GSSAPI library allow a length-limited write buffer overflow on malloc() allocated memory when presented with a maliciously small packet. This flaw allows a remote user to send specially crafted malicious data to the application, possibly resulting in a denial of service (DoS) attack.

    References: https://ubuntu.com/security/CVE-2022-3437, https://www.samba.org/samba/security/CVE-2022-3437.html, https://github.com/heimdal/heimdal/security/advisories/GHSA-45j3-5v39-rf9j, https://ubuntu.com/security/notices/USN-5800-1, https://ubuntu.com/security/notices/USN-5822-1, https://ubuntu.com/security/notices/USN-5822-2, https://ubuntu.com/security/notices/USN-5936-1, https://www.cve.org/CVERecord?id=CVE-2022-3437, https://ubuntu.com/security/notices/USN-7582-1

    Affected packages

    Package

    Name: heimdal

    Purl: pkg:deb/ubuntu/[email protected]~git20131207+dfsg-1ubuntu1.2+esm3?arch=source&distro=trusty/esm

    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-2022-3437 | CVE-DB