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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2023-02-14T17:35:26.294Z

Updated: 2024-08-02T11:25:19.239Z

Reserved: 2023-02-07T17:10:00.735Z

Link: CVE-2023-25564

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2023-02-14T18:15:13.173

Modified: 2023-02-22T18:39:17.970

Link: CVE-2023-25564

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-02-14T00:00:00Z

Links: CVE-2023-25564 - Bugzilla