CVE Vulnerability

CVE-2023-25564

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, memory corruption can be triggered when decoding UTF16 strings. The variable `outlen` was not initialized and could cause writing a zero to an arbitrary place in memory if `ntlm_str_convert()` were to fail, which would leave `outlen` uninitialized. This can lead to a denial of service if the write hits unmapped memory or randomly corrupts a byte in the application memory space. This vulnerability can trigger an out-of-bounds write, leading to memory corruption. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This issue is fixed in version 1.2.0.

8.2 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/gssapi/gss-ntlmssp/commit/c753000eb31835c0664e528fbc99378ae0cbe950 Patch Third Party Advisory
https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 Third Party Advisory
https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-r85x-q5px-9xfq Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:gss-ntlmssp_project:gss-ntlmssp:*:*:*:*:*:*:*:*
Information

Published : 2023-02-14 06:15

Updated : 2023-02-22 06:39

NVD link : CVE-2023-25564

Mitre link : CVE-2023-25564

Products Affected
No products.
CWE
No CWE.