UBUNTU-CVE-2022-3996

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    UBUNTU-CVE-2022-3996

    Published: 13 Dec 2022Last Modified: 22 Apr 2026
    Upstream:
    CVE-2022-3996
    Aliases:
    USN-6039-1

    Summary:

    Details: If an X.509 certificate contains a malformed policy constraint and policy processing is enabled, then a write lock will be taken twice recursively. On some operating systems (most widely: Windows) this results in a denial of service when the affected process hangs. Policy processing being enabled on a publicly facing server is not considered to be a common setup. Policy processing is enabled by passing the `-policy' argument to the command line utilities or by calling the `X509_VERIFY_PARAM_set1_policies()' function. Update (31 March 2023): The description of the policy processing enablement was corrected based on CVE-2023-0466.

    References: https://ubuntu.com/security/CVE-2022-3996, https://www.openssl.org/news/secadv/20221213.txt, https://ubuntu.com/security/notices/USN-6039-1, https://www.cve.org/CVERecord?id=CVE-2022-3996

    Affected packages

    Package

    Name: edk2

    Purl: pkg:deb/ubuntu/edk2@0~20160408.ffea0a2c-2ubuntu0.2+esm3?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -None

    Affected versions

    0~20150106.5c2d456b-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-2022-3996 | CVE-DB