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CVE-2023-25565

7.5 · HIGH

GSS-NTLMSSP is a mechglue plugin for the GSSAPI library that implements NTLM authentication.

Published Feb 14, 2023CWE-590EPSS 1.10%

Overview

CVE-2023-25565 is a high-severity vulnerability. It was published on February 14, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64GitHubgithub.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0GitHubgithub.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfgGitHubgithub.com/gssapi/gss-ntlmssp/commit/c16100f60907a2de92bcb676f303b81facee0f64GitHubgithub.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0GitHubgithub.com/gssapi/gss-ntlmssp/security/advisories/GHSA-7q7f-wqcg-mvfg

How CyberStrike helps

Frequently asked questions

What is CVE-2023-25565?

CVE-2023-25565 is a high-severity vulnerability. It was published on February 14, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-25565?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-25565?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-25565?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-25565 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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