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CVE-2011-4318

5.8 · MEDIUM

Dovecot 2.0.x before 2.0.16, when ssl or starttls is enabled and hostname is used to define the proxy destination, does not verify that the server hostname matches a domain name in the subject's Co…

Published Mar 7, 2013dovecotCWE-20EPSS 1.32%

Overview

CVE-2011-4318 is a medium-severity vulnerability affecting dovecot dovecot. It was published on March 7, 2013 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Dovecot 2.0.x before 2.0.16, when ssl or starttls is enabled and hostname is used to define the proxy destination, does not verify that the server hostname matches a domain name in the subject's Common Name (CN) of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via a valid certificate for a different hostname.

Remediation

Check the references section for vendor advisories and patches from dovecot. Update dovecot 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

References

Refhg.dovecot.org/dovecot-2.0/rev/5e9eaf63a6b1Refrhn.redhat.com/errata/RHSA-2013-0520.htmlRefsecunia.com/advisories/46886Refsecunia.com/advisories/52311Refwww.dovecot.org/list/dovecot-news/2011-November/000200.htmlRefwww.openwall.com/lists/oss-security/2011/11/18/5Refwww.openwall.com/lists/oss-security/2011/11/18/7Refbugs.gentoo.org/show_bug.cgi?id=390887Refbugzilla.redhat.com/show_bug.cgi?id=754980Refhg.dovecot.org/dovecot-2.0/rev/5e9eaf63a6b1

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4318?

CVE-2011-4318 is a medium-severity vulnerability affecting dovecot dovecot. It was published on March 7, 2013 and has a CVSS 2.0 base score of 5.8 (MEDIUM).

How severe is CVE-2011-4318?

This vulnerability has a CVSS 2.0 base score of 5.8, 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-2011-4318?

Check the references section for vendor advisories and patches from dovecot. Update dovecot 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-2011-4318?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4318 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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