CVE-2023-25565 - CVE House
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Status published High CVE-2023-25565

GSS-NTLMSSP vulnerable to incorrect free when decoding target information

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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CVE-2023-25564
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CVE-2023-25563
GSS-NTLMSSP vulnerable to multiple out-of-bounds reads when decoding NTLM fields
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Affected Vendor

Affected Software

gss-ntlmssp
Vulnerable Versions:
< 1.2.0

Timeline

Official Publish: February 14th, 2023
Last Modified: March 10th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-590

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.