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TITLE:
Pidgin SSL Verification Security Issue

SECUNIA ADVISORY ID:
SA31390

VERIFY ADVISORY:
http://secunia.com/advisories/31390/

CRITICAL:
Less critical

IMPACT:
Spoofing

WHERE:
>From remote

SOFTWARE:
Pidgin 2.x
http://secunia.com/product/14677/

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

The problem is that the certificate presented by e.g. a Jabber server
at the beginning of an SSL session is not verified. This can be
exploited to spoof valid servers via a man-in-the-middle attack.

Successful exploitation requires that Pidgin is configured to use the
NSS plugin.

The security issue is reported in version 2.4.3. Other versions may
also be affected.

SOLUTION:
Do not rely on the application's SSL certificate verification.

PROVIDED AND/OR DISCOVERED BY:
Reported by Josh Triplett in a Debian bug report.

ORIGINAL ADVISORY:
http://developer.pidgin.im/ticket/6500

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=492434

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

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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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