A vulnerability has been discovered in SquirrelMail, which can be exploited by malicious people to conduct cross-site request forgery attacks.
The application allows users to perform certain actions via HTTP requests without performing any validation checks to verify the requests. This can be exploited to e.g. change user preferences, delete emails, and potentially send emails when a logged-in user visits a malicious web page.
The vulnerabilities are confirmed in version 1.4.17. Other versions may also be affected.
Solution: Update to version 1.4.20.
Provided and/or discovered by: Independently reported by:
* Mike Bailey
* Jaykishan Nirmal and Kishor Sonawane
Additional information regarding incomplete fix provided by Secunia Research.
Original Advisory: http://www.squirrelmail.org/security/issue/2009-08-12
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