CentOS Linux: CVE-2023-25564: Moderate: gssntlmssp security update (CESA-2023:3097)

CentOS Linux: CVE-2023-25564: Moderate: gssntlmssp security update (CESA-2023:3097)

Severity

9

CVSS

(AV:N/AC:L/Au:N/C:N/I:P/A:C)

Published

02/14/2023

Created

05/17/2023

Added

05/17/2023

Modified

01/28/2025

Description

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.

Solution(s)

• centos-upgrade-gssntlmssp
• centos-upgrade-gssntlmssp-debuginfo
• centos-upgrade-gssntlmssp-debugsource

References

• CVE-2023-25564