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CVE-2023-25824

7.5 · HIGH

Mod_gnutls is a TLS module for Apache HTTPD based on GnuTLS.

Published Feb 23, 2023CWE-835EPSS 1.09%

Overview

CVE-2023-25824 is a high-severity vulnerability. It was published on February 23, 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

Mod_gnutls is a TLS module for Apache HTTPD based on GnuTLS. Versions from 0.9.0 to 0.12.0 (including) did not properly fail blocking read operations on TLS connections when the transport hit timeouts. Instead it entered an endless loop retrying the read operation, consuming CPU resources. This could be exploited for denial of service attacks. If trace level logging was enabled, it would also produce an excessive amount of log output during the loop, consuming disk space. The problem has been fixed in commit d7eec4e598158ab6a98bf505354e84352f9715ec, please update to version 0.12.1. There are no workarounds, users who cannot update should apply the errno fix detailed in the security advisory.

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

Refbugs.debian.org/cgi-bin/bugreport.cgi?bug=942737#25GitHubgithub.com/airtower-luna/mod_gnutls/commit/d7eec4e598158ab6a98bf505354e84352f9715ecGitHubgithub.com/airtower-luna/mod_gnutls/security/advisories/GHSA-6cfv-fvgm-7pc8Refbugs.debian.org/cgi-bin/bugreport.cgi?bug=942737#25GitHubgithub.com/airtower-luna/mod_gnutls/commit/d7eec4e598158ab6a98bf505354e84352f9715ecGitHubgithub.com/airtower-luna/mod_gnutls/security/advisories/GHSA-6cfv-fvgm-7pc8

How CyberStrike helps

Frequently asked questions

What is CVE-2023-25824?

CVE-2023-25824 is a high-severity vulnerability. It was published on February 23, 2023 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2023-25824?

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-2023-25824?

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-2023-25824?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-25824 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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