CVE-2011-4318

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.

Category

5.8
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.38%
Vendor Advisory redhat.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/46886 third party advisory
http://rhn.redhat.com/errata/RHSA-2013-0520.html vendor advisory
https://bugs.gentoo.org/show_bug.cgi?id=390887
https://bugzilla.redhat.com/show_bug.cgi?id=754980
http://secunia.com/advisories/52311 third party advisory vendor advisory
http://hg.dovecot.org/dovecot-2.0/rev/5e9eaf63a6b1
http://www.dovecot.org/list/dovecot-news/2011-November/000200.html mailing list
http://www.openwall.com/lists/oss-security/2011/11/18/7 mailing list
http://www.openwall.com/lists/oss-security/2011/11/18/5 mailing list

Frequently Asked Questions

What is the severity of CVE-2011-4318?
CVE-2011-4318 has been scored as a medium severity vulnerability.
How to fix CVE-2011-4318?
To fix CVE-2011-4318, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2011-4318 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2011-4318 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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