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CVE-2023-25567

7.5 · HIGH

GSS-NTLMSSP, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0.

Published Feb 14, 2023CWE-125EPSS 1.10%

Overview

CVE-2023-25567 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, a mechglue plugin for the GSSAPI library that implements NTLM authentication, has an out-of-bounds read when decoding target information prior to version 1.2.0. The length of the `av_pair` is not checked properly for two of the elements which can trigger an out-of-bound read. The out-of-bounds read can be triggered via the main `gss_accept_sec_context` entry point and could cause a denial-of-service if the memory is unmapped. The 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/025fbb756d44ffee8f847db4222ed6aa4bd1fbe4GitHubgithub.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0GitHubgithub.com/gssapi/gss-ntlmssp/security/advisories/GHSA-24pf-6prf-24chGitHubgithub.com/gssapi/gss-ntlmssp/commit/025fbb756d44ffee8f847db4222ed6aa4bd1fbe4GitHubgithub.com/gssapi/gss-ntlmssp/releases/tag/v1.2.0GitHubgithub.com/gssapi/gss-ntlmssp/security/advisories/GHSA-24pf-6prf-24ch

How CyberStrike helps

Frequently asked questions

What is CVE-2023-25567?

CVE-2023-25567 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-2023-25567?

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-2023-25567?

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-2023-25567?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-25567 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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