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Category:   Application (Instant Messaging/IRC/Chat)  >   Trillian Vendors:   Cerulean Studios
Trillian Buffer Overflow in Processing AIM XML Tags May Let Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1021336
SecurityTracker URL:  http://securitytracker.com/id/1021336
CVE Reference:   CVE-2008-5403   (Links to External Site)
Updated:  Dec 10 2008
Original Entry Date:  Dec 5 2008
Impact:   Execution of arbitrary code via network, User access via network

Version(s): prior to 3.1.12.0
Description:   A vulnerability was reported in Trillian. A remote user can execute arbitrary code on the target user's system.

A remote user can send a specially crafted XML tag via AIM to trigger a heap overflow and execute arbitrary code on the target user's system. The code will run with the privileges of the target user.

The vendor was notified on November 24, 2008.

Damian Put reported this vulnerability via TippingPoint.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (3.1.12.0).

The vendor's advisory is available at:

http://blog.ceruleanstudios.com/?p=404

Vendor URL:  www.ceruleanstudios.com/ (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  [Full-disclosure] ZDI-08-079: Trillian AIM Plugin Malformed XML Tag

ZDI-08-079: Trillian AIM Plugin Malformed XML Tag Heap Overflow 
Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-08-079
December 4, 2008

-- Affected Vendors:
Cerulean Studios

-- Affected Products:
Cerulean Studios Trillian

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

The specific flaw exists within the XML processing code for Trillian.
When parsing a malformed XML tag, the application does not allocate
enough space for it's contents. During copying of this to the newly
allocated buffer, the application will overwrite heap structures with
attacker-supplied data that can then be leveraged to achieve code
execution with the privileges of the application.

-- Vendor Response:
Cerulean Studios has issued an update to correct this vulnerability. More
details can be found at:

http://blog.ceruleanstudios.com/?p=404

-- Disclosure Timeline:
2008-11-24 - Vulnerability reported to vendor
2008-12-04 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Damian Put

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents 
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

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

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