National Cyber Awareness System
Vulnerability Summary for CVE-2011-4318
Original release date:03/07/2013
Last revised:03/07/2013
Source:
US-CERT/NIST
Overview
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.
Impact
CVSS Severity (version 2.0):
Impact Subscore:
4.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type:Allows unauthorized disclosure of information; Allows unauthorized modification
References to Advisories, Solutions, and Tools
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External Source: MISC
Name: https://bugzilla.redhat.com/show_bug.cgi?id=754980
External Source: MISC
Name: https://bugs.gentoo.org/show_bug.cgi?id=390887
External Source: MLIST
Name: [oss-security] 20111118 Re: CVE Request -- Dovecot -- Validate certificate's CN against requested remote server hostname when proxying
External Source: MLIST
Name: [oss-security] 20111118 Re: CVE Request -- Dovecot -- Validate certificate's CN against requested remote server hostname when proxying
External Source: MLIST
Name: [dovecot-news] 20111117 v2.0.16 released
External Source: SECUNIA
Name: 52311
Type: Advisory
External Source: SECUNIA
Name: 46886
External Source: REDHAT
Name: RHSA-2013:0520
Type: Advisory
External Source: CONFIRM
Name: http://hg.dovecot.org/dovecot-2.0/rev/5e9eaf63a6b1