CVE catalog
CVE-2023-25565
gss-ntlmssp: CVE-2023-25565
- Severity
- High · CVSS 7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.10% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | gss-ntlmssp | sid | 1.3.1-1 | fixed |
| Debian | gss-ntlmssp | forky | 1.3.1-1 | fixed |
| Debian | gss-ntlmssp | trixie | 1.2.0-1 | fixed |
| Debian | gss-ntlmssp | bookworm | 1.2.0-1 | fixed |
| Ubuntu | gss-ntlmssp | pro | 0.7.0-4build3 | vulnerable |
| Ubuntu | gss-ntlmssp | pro | 0.7.0-4build4 | vulnerable |
| Ubuntu | gss-ntlmssp | pro | 0.7.0-4ubuntu0.22.04.1~esm1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | gss-ntlmssp | source | sid | 1.2.0-1 | not yet assigned | Not reported | [1031369] |
| Debian | gss-ntlmssp | source | forky | 1.2.0-1 | not yet assigned | Not reported | [1031369] |
| Debian | gss-ntlmssp | source | trixie | 1.2.0-1 | not yet assigned | Not reported | [1031369] |
| Debian | gss-ntlmssp | source | bookworm | 1.2.0-1 | not yet assigned | Not reported | [1031369] |
| Ubuntu | gss-ntlmssp | deb | pro | 0.7.0-4ubuntu0.22.04.1~esm1 | Not reported | UBUNTU-CVE-2023-25565 | Not reported |
OpenFactory catalog packages
Matching against OpenFactory catalog package versions is in progress.
References
- [https://access.redhat.com/errata/RHSA-2023:3097]
- [https://ftp.suse.com/pub/projects/security/csaf/rhsa-2023_3097.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2023-25565]
- [https://osv.dev/vulnerability/UBUNTU-CVE-2023-25565]
- [https://security-tracker.debian.org/tracker/CVE-2023-25565]
- [https://wid.cert-bund.de/.well-known/csaf/white/2023/wid-sec-w-2023-1238.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX] · [SUSE security advisories and VEX]