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ZDI-08-030: Trillian Multiple Protocol XML Parsing Memory Corruption Vulnerability

Date: Wed May 21 2008 - 17:46:31 CDT

ZDI-08-030: Trillian Multiple Protocol XML Parsing Memory Corruption
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 6126.
For further product information on the TippingPoint IPS, visit:


-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of Cerulean Studios Trillian Pro.
Authentication is not required to exploit this vulnerability.

The specific flaw exists within XML parsing in talk.dll. When processing
certain malformed attributes within an 'IMG' tags, it is possible to
overwrite past an allocated heap chunk which can eventually lead to code
execution under the context of the currently user.

-- 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:
2008-04-08 - Vulnerability reported to vendor
2008-05-21 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * tw33k and n8

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