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TITLE:
Dovecot Common Name Verification Security Issue

SECUNIA ADVISORY ID:
SA46886

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/46886/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=46886

RELEASE DATE:
2011-11-17

DISCUSS ADVISORY:
http://secunia.com/advisories/46886/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

http://secunia.com/advisories/46886/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=46886

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

http://secunia.com/vulnerability_scanning/personal/
http://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A security issue has been reported in Dovecot, which can be exploited
by malicious people to conduct spoofing attacks.

The security issue is caused due the application not properly
checking if the "Common Name" field provided inside SSL server
certificates matches the requested hostname of a server. This can be
exploited to e.g. conduct Man-in-the-Middle (MitM) attacks.

Successful exploitation requires that the application is configured
to check for certificates.

The security issue is reported in versions prior to 2.0.16.

SOLUTION:
Update to version 2.0.16.

PROVIDED AND/OR DISCOVERED BY:
Reported by the vendor.

ORIGINAL ADVISORY:
http://www.dovecot.org/list/dovecot-news/2011-November/000200.html

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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About:
This Advisory was delivered by Secunia as a free service to help
private users keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/advisories/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/advisories/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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