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. https://github.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0 https://github.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64 https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfg
Created gssntlmssp tracking bugs for this issue: Affects: epel-7 [bug 2172026]
Created gssntlmssp tracking bugs for this issue: Affects: fedora-all [bug 2175084]
This issue has been addressed in the following products: Red Hat Enterprise Linux 8 Via RHSA-2023:3097 https://access.redhat.com/errata/RHSA-2023:3097
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s): https://access.redhat.com/security/cve/cve-2023-25565