CVE-2023-25566

    Dashboard / Vulnerabilities / CVE-2023-25566

    CVE-2023-25566

    Published: 14 Feb 2023Last Modified: 28 Oct 2026

    Summary: GSS-NTLMSSP vulnerable to memory leak when parsing usernames

    Details: GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, a memory leak can be triggered when parsing usernames which can trigger a denial-of-service. The domain portion of a username may be overridden causing an allocated memory area the size of the domain name to be leaked. An attacker can leak memory via the main `gss_accept_sec_context` entry point, potentially causing a denial-of-service. This issue is fixed in version 1.2.0.

    References: https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/25xxx/CVE-2023-25566.json, https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-mfm4-6g58-jw74, https://nvd.nist.gov/vuln/detail/CVE-2023-25566, https://github.com/gssapi/gss-ntlmssp/commit/8660fb16474054e692a596e9c79670cd4d3954f4

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -3c3077e2a24b47db1b4c459fb3173ba7f75b9b44

    Affected versions

    v1.1.0

    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
    CVE-2023-25566 | CVE-DB