UBUNTU-CVE-2023-52892

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    UBUNTU-CVE-2023-52892

    Published: 27 Jun 2024Last Modified: 15 Sept 2026
    Upstream:
    CVE-2023-52892

    Summary:

    Details: In phpseclib before 1.0.22, 2.x before 2.0.46, and 3.x before 3.0.33, some characters in Subject Alternative Name fields in TLS certificates are incorrectly allowed to have a special meaning in regular expressions (such as a + wildcard), leading to name confusion in X.509 certificate host verification.

    References: https://ubuntu.com/security/CVE-2023-52892, https://www.cve.org/CVERecord?id=CVE-2023-52892, https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627, https://github.com/phpseclib/phpseclib/issues/1943, https://github.com/phpseclib/phpseclib/releases/tag/3.0.33, https://github.com/phpseclib/phpseclib/commit/6cd6e8ceab9f2b55c8cd81d2192bf98cbeaf4627, https://github.com/x509-name-testing/name_testing_artifacts, https://ubuntu.com/security/notices/USN-7404-1, https://ubuntu.com/security/notices/USN-8769-1

    Affected packages

    Package

    Name: php-phpseclib

    Purl: pkg:deb/ubuntu/php-phpseclib?arch=source&distro=esm-apps%2Fxenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -2.0.1-1ubuntu0.1~esm2

    Affected versions

    2.0.1-1
    2.0.1-1build1

    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-2023-52892 | CVE-DB