CVE-2023-25567: GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that i..

gss-ntlmssp_project

Feb 14, 2023

Feb 22, 2023

High

7.5

/

10

Description

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.

Products affected:

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Severity

High

High

7.5

/

10

CVSS base metrics

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

LOW

User interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Exploitability Score

3.9

Impact Score

3.6

Weakness

CWE-125__CWE-125__

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