# CVE-2023-25565: gssntlmssp: The gssntlmssp is a GSSAPI NTLM mechanism that allows to perform NTLM authentication in GSSAPI programs.  Security Fi...

CVE-2023-25565 is fixed in 2 products on 1 platform, first by gss-ntlmssp 0.7.0-4ubuntu0.18.04.1~esm1, released February 14, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-25565
- Priority: High
- CVSS: 7.5 (Moderate)
- EPSS: 0.0110
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 14, 2023

## Description

The gssntlmssp is a GSSAPI NTLM mechanism that allows to perform NTLM authentication in GSSAPI programs.  Security Fix(es):  * gssntlmssp: multiple out-of-bounds read when decoding NTLM fields (CVE-2023-25563)  * gssntlmssp: memory corruption when decoding UTF16 strings (CVE-2023-25564)  * gssntlmssp: incorrect free when decoding target information (CVE-2023-25565)  * gssntlmssp: memory leak when parsing usernames (CVE-2023-25566)  * gssntlmssp: out-of-bounds read when decoding target information (CVE-2023-25567)  For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | gss-ntlmssp Debian 12.15 (bookworm) | 1.2.0-1 | [DEBIAN-CVE-2023-25565](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25565.md) | Feb 14, 2023 |
| Linux | gss-ntlmssp Debian 13.5 (trixie) | 1.2.0-1 | [DEBIAN-CVE-2023-25565](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25565.md) | Feb 14, 2023 |
| Linux | gss-ntlmssp Debian 14 | 1.2.0-1 | [DEBIAN-CVE-2023-25565](https://patchblox.com/security/data/fix/linux/debian-cve-2023-25565.md) | Feb 14, 2023 |
| Linux | gss-ntlmssp Ubuntu 18.04.6 LTS (bionic) | 0.7.0-4ubuntu0.18.04.1~esm1 | [gss-ntlmssp 0.7.0-4ubuntu0.18.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-gss-ntlmssp-0.7.0-4ubuntu0.18.04.1-esm1.md) | Feb 14, 2023 |
| Linux | gss-ntlmssp Ubuntu 20.04 LTS (focal) | 0.7.0-4ubuntu0.20.04.1~esm1 | [gss-ntlmssp 0.7.0-4ubuntu0.20.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-gss-ntlmssp-0.7.0-4ubuntu0.20.04.1-esm1.md) | Feb 14, 2023 |
| Linux | gss-ntlmssp Ubuntu 22.04.1 LTS (jammy) | 0.7.0-4ubuntu0.22.04.1~esm1 | [gss-ntlmssp 0.7.0-4ubuntu0.22.04.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-gss-ntlmssp-0.7.0-4ubuntu0.22.04.1-esm1.md) | Feb 14, 2023 |
| Linux | gssntlmssp RHEL 8 | 0:1.2.0-1.el8_8 | [RHSA-2023:3097](https://patchblox.com/security/data/fix/linux/rhsa-2023-3097.md) | May 16, 2023 |
| Linux | gssntlmssp almalinux 8 | 1.2.0-1.el8_8 | [ALSA-2023:3097](https://patchblox.com/security/data/fix/linux/alsa-2023-3097.md) | May 16, 2023 |
| Linux | gssntlmssp ol 8 | 0:1.2.0-1.el8_8 | [ELSA-2023-3097](https://patchblox.com/security/data/fix/linux/elsa-2023-3097.md) | May 24, 2023 |

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Data as of 2026-11-08T13:06:02Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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