CVE-2023-25565

NameCVE-2023-25565
DescriptionGSS-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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs1031369

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
gss-ntlmssp (PTS)buster, bullseye0.7.0-4vulnerable
sid, trixie, bookworm1.2.0-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
gss-ntlmsspsource(unstable)1.2.0-11031369

Notes

[bullseye] - gss-ntlmssp <no-dsa> (Minor issue)
[buster] - gss-ntlmssp <no-dsa> (Minor issue)
https://github.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfg
https://github.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64 (v1.2.0)

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