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Category:   Application (Instant Messaging/IRC/Chat)  >   Trillian Vendors:   Cerulean Studios
Trillian Heap Overflow in Window Width Value Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1018265
SecurityTracker URL:  http://securitytracker.com/id/1018265
CVE Reference:   CVE-2007-3305   (Links to External Site)
Updated:  May 11 2008
Original Entry Date:  Jun 18 2007
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 3.1.6.0
Description:   A vulnerability was reported in Trillian. A remote user can execute arbitrary code on the target system.

A remote user can send specially crafted UTF-8 encoded data that, when viewed by the target user, will 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.

A specially crafted window width value can trigger the overflow.

The vendor was notified on May 4, 2007.

www.BlurredLogic.com reported this vulnerability to iDefense.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fixed version (3.1.6.0).

The Cerulean advisory is available at:

http://blog.ceruleanstudios.com/?p=150

Vendor URL:  blog.ceruleanstudios.com/?p=150 (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (Any)

Message History:   None.


 Source Message Contents

Subject:  iDefense Security Advisory 06.18.07: Cerulean Studios Trillian UTF-8

Cerulean Studios Trillian UTF-8 Word Wrap Heap Overflow Vulnerability

iDefense Security Advisory 06.18.07
http://labs.idefense.com/intelligence/vulnerabilities/
Jun 18, 2007

I. BACKGROUND

Trillian is a multi-protocol chat application that supports IRC, ICQ,
AIM and MSN protocols. More information can be found on the vendor's
site at the following URL.

http://www.ceruleanstudios.com/learn

II. DESCRIPTION

Remote exploitation of a heap overflow vulnerability in Cerulean Studios
Trillian Instant Messenger could allow attackers to execute arbitrary
code as the currently logged on user.

The vulnerability specifically exists due to improper handling of UTF-8
sequences. When word-wrapping UTF-8 text, the window width is
improperly used as a buffer size value. As such, heap corruption can
occur leading to a potentially exploitable condition.

III. ANALYSIS

Exploitation of this vulnerability could allow remote attackers to
execute arbitrary code with the credentials of the currently logged on
user.

Exploitation occurs simply by viewing a malicious message that contains
a specially constructed UTF-8 string.

The MSN protocol is a known attack vector for this vulnerability.
However, exploitation could potentially occur using any supported
protocol.

IV. DETECTION

iDefense has confirmed the existence of this vulnerability in Cerulean
Studios Trillian 3.1.5.1. Previous versions are suspected to be
vulnerable.

V. WORKAROUND

iDefense is currently unaware of any effective workaround for this
issue.

VI. VENDOR RESPONSE

The Cerulean Studios team has addressed this vulnerability by releasing
version 3.1.6.0 of Trillian. More information is available at the
Cerulean Studios Blog via the following URL.

http://blog.ceruleanstudios.com/?p=150

VII. CVE INFORMATION

A Mitre Corp. Common Vulnerabilities and Exposures (CVE) number has not
been assigned yet.

VIII. DISCLOSURE TIMELINE

05/04/2007  Initial vendor notification
05/04/2007  Initial vendor response
06/18/2007  Coordinated public disclosure

IX. CREDIT

This vulnerability was reported to iDefense by www.BlurredLogic.com.

Get paid for vulnerability research
http://labs.idefense.com/methodology/vulnerability/vcp.php

Free tools, research and upcoming events
http://labs.idefense.com/

X. LEGAL NOTICES


Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDefense. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically,
please e-mail customerservice@idefense.com for permission.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
 There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.
_______________________________________________
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http://www.idefense.com/mailman/listinfo/idlabs-advisories


 
 


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