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CVE-2015-2091

5.0 · MEDIUM

The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when "GnuTLSClientVerify require" is set, which allows remote attackers to spoof clie…

Published Mar 13, 2015apacheCWE-310EPSS 3.25%

Overview

CVE-2015-2091 is a medium-severity vulnerability affecting apache mod-gnutls. It was published on March 13, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The authentication hook (mgs_hook_authz) in mod-gnutls 0.5.10 and earlier does not validate client certificates when "GnuTLSClientVerify require" is set, which allows remote attackers to spoof clients via a crafted certificate.

Remediation

Check the references section for vendor advisories and patches from apache. Update mod-gnutls to the latest patched version. 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.

Affected products

VendorProductVersionsStatus
apachemod-gnutls0Affected

References

Refissues.outoforder.cc/view.php?id=93Refwww.debian.org/security/2015/dsa-3177Refbugs.debian.org/cgi-bin/bugreport.cgi?bug=578663Refsecurity.gentoo.org/glsa/201709-04Refissues.outoforder.cc/view.php?id=93Refwww.debian.org/security/2015/dsa-3177Refbugs.debian.org/cgi-bin/bugreport.cgi?bug=578663Refsecurity.gentoo.org/glsa/201709-04

How CyberStrike helps

Frequently asked questions

What is CVE-2015-2091?

CVE-2015-2091 is a medium-severity vulnerability affecting apache mod-gnutls. It was published on March 13, 2015 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2015-2091?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2015-2091?

Check the references section for vendor advisories and patches from apache. Update mod-gnutls to the latest patched version. 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-2015-2091?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2015-2091 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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