GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication. Prior to version 1.2.0, an incorrect free when decoding target information can trigger a denial of service. The error condition incorrectly assumes the `cb` and `sh` buffers contain a copy of the data that needs to be freed. However, that is not the case. This vulnerability can be triggered via the main `gss_accept_sec_context` entry point. This will likely trigger an assertion failure in `free`, causing a denial-of-service. This issue is fixed in version 1.2.0.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade gssntlmssp | May 23, 2023 | Feb 14, 2023 |
| Centos_linux | — | Upgrade gssntlmssp-debugsourceUpgrade gssntlmsspUpgrade gssntlmssp-debuginfo | May 17, 2023 | Feb 14, 2023 |
| Debian | — | Upgrade gss-ntlmssp | Jul 30, 2024 | Feb 14, 2023 |
| Oracle_linux | — | Upgrade gssntlmssp | May 25, 2023 | Feb 14, 2023 |
| Redhat_linux | — | Upgrade gssntlmsspUpgrade gssntlmssp-debuginfoUpgrade gssntlmssp-debugsource | May 17, 2023 | Feb 14, 2023 |
| Suse | — | Upgrade gssntlmsspUpgrade gssntlmssp-devel | Feb 21, 2023 | Feb 14, 2023 |
| Ubuntu | — | Upgrade gss-ntlmssp (Ubuntu Pro) | Jun 26, 2025 | Feb 14, 2023 |
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