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TITLE:
Trillian Information Leakage and Buffer Overflow Vulnerabilities

SECUNIA ADVISORY ID:
SA25086

VERIFY ADVISORY:
http://secunia.com/advisories/25086/

CRITICAL:
Highly critical

IMPACT:
Exposure of sensitive information, System access

WHERE:
>From remote

SOFTWARE:
Trillian Pro 3.x
http://secunia.com/product/5467/
Trillian Basic 3.x
http://secunia.com/product/4759/

DESCRIPTION:
Some vulnerabilities have been reported in Trillian, which can be
exploited by malicious users to gain knowledge of sensitive
information or compromise another 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.

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

SOLUTION:
Update to version 3.5.1.0.
http://www.ceruleanstudios.com/downloads/

PROVIDED AND/OR DISCOVERED BY:
Discovered by enhalos and reported via iDefense Labs.

ORIGINAL ADVISORY:
Cerulean Studios:
http://blog.ceruleanstudios.com/?p=129#more-129

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

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