CVE-2023-25565 HIGH

CVE-2023-25565: GSS-NTLMSSP vulnerable to incorrect free when decoding target information

Vendor Gssapi
Product gss-ntlmssp
Weakness CWE-590
Published February 14, 2023
Last update March 10, 2025

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 14, 2023 CVE published
March 10, 2025 Record updated