CVE-2023-25567 HIGH

CVE-2023-25567: GSS-NTLMSSP vulnerable to out-of-bounds read when decoding target information

Vendor Gssapi
Product gss-ntlmssp
Weakness CWE-125
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, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the `av_pair` is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main `gss_accept_sec_context` entry point and could cause a denial-of-service if the memory is unmapped. The issue is fixed in version 1.2.0.

Key dates

02Disclosure timeline

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