CVE-2023-25565

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the `cb` and `sh` buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This will likely trigger an assertion failure in `free`, causing a denial-of-service. This issue is fixed in version 1.2.0.

Score

CVSS 3.1 7.5 High

Status

Modified - security-advisories@github.com

Published

2023-02-14

Last modified

2025-03-10

Weaknesses

CWE-590, CWE-763

Affected products

• Gss-ntlmssp (Gss-ntlmssp Project)
• Gss-ntlmssp (Gssapi)

References

• https://github.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64
• https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0
• https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfg