ZDI-08-029: Trillian AIM.DLL Long HTML Font Parameter Stack Overflow Vulnerability

ZDI-08-029: Trillian AIM.DLL Long HTML Font Parameter Stack Overflow
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-029
May 21, 2008

– Affected Vendors:
Cerulean Studios

– Affected Products:
Cerulean Studios Trillian

– TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 5958.
For further product information on the TippingPoint IPS, visit:

http://www.tippingpoint.com

– Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Trillian. User interaction is required to
exploit this vulnerability in that the target must open a malicious
image file.

The specific flaws exists during the parsing of messages with overly
long attribute values within the FONT tag. The value for any attribute
is copied into a stack based buffer via sprintf() which can result in a
buffer overrun and can be subsequently leveraged to execute arbitrary
code under the privileges of the logged in user. Exploitation may occur
over the AIM network or via direct connections.

– Vendor Response:
Trillian v3.1.10.0 has been released to address these vulnerabilities
and is available at http://www.ceruleanstudios.com/downloads/

– Disclosure Timeline:
2007-12-03 - Vulnerability reported to vendor
2008-05-21 - Coordinated public release of advisory

– Credit:
This vulnerability was discovered by:
* Anonymous

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