Secunia

Some vulnerabilities have been reported in Trillian, which can be exploited by malicious people to gain knowledge of sensitive information or compromise a user's system.

1) An error within the copy operation in an IRC message window (by highlighting the text) can be exploited to cause a heap-based buffer overflow via an overly long URL string consisting of UTF-8 characters.

Successful exploitation may allow execution of arbitrary code, but requires that a user is tricked into e.g. highlighting the malicious URL in an IRC message window.

2) An error within the IRC module can be exploited to cause a heap-based buffer overflow via an overly long, specially crafted message containing a font face HTML tag with the face attribute set to a long UTF-8 string.

Successful exploitation may allow execution of arbitrary code.

3) An error within the handling of CTCP PING messages containing UTF-8 characters can be exploited to make the client return a malformed response with no terminating newline character. This could allow the next line to be sent to the attacker instead of the server.

4) An error within the Rendezvous / XMPP (Extensible Messaging and Presence Protocol) messaging subsystem can be exploited to cause a heap-based buffer overflow via a specially crafted message sent to default port 5298/TCP.

Successful exploitation allows execution of arbitrary code.

The vulnerabilities are reported in version 3.1. Other versions may also be affected.

Solution
Update to version 3.1.5.1.
Further details available in Customer Area

Provided and/or discovered by
1) - 3) Discovered by enhalos and reported via iDefense Labs.
4) Pedram Amini, TippingPoint Security Research Team

Changelog
Further details available in Customer Area

Original Advisory
Cerulean Studios:
http://blog.ceruleanstudios.com/?p=131
http://blog.ceruleanstudios.com/?p=129#more-129

iDefense Labs:
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=522

TippingPoint Security Research Team:
http://dvlabs.tippingpoint.com/advisory/TPTI-07-06

Deep Links
Links available in Customer Area