cvedb.io
CVE-2023-25564
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2023-02-14T18:15:13.173 · Last modified 2026-06-17T05:41:30.087

Summary

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.

Affected products

gss-ntlmssp_project — gss-ntlmssp

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.