Message-ID: <OFBB15E4B3.9BB4799D-ON88257450.00789BD6-86257450.007D069F@3com.com>
Date: Wed, 21 May 2008 17:45:37 -0500
From: zdi-disclosures@...m.com
To: full-disclosure@...ts.grok.org.uk, bugtraq@...urityfocus.com
Cc: zdi-disclosures@...m.com
Subject: 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

-- About the Zero Day Initiative (ZDI):
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a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

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exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
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Our vulnerability disclosure policy is available online at:

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