A security issue has been reported in Mercurial, 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.
The security issue is reported in versions prior to 1.6.4.
Solution: Update to version 1.6.4.
Provided and/or discovered by: Reported by the vendor
Original Advisory: http://mercurial.selenic.com/wiki/WhatsNew#A1.6.4_.282010-10-01.29
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Subject: Mercurial Common Name Verification Security Issue
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