[Full-disclosure] Yahoo! Messenger v11.5 - Buffer Overflow Vulnerability

["research@xxxxxxxxxxxxxxxxxxxxx" <research@xxxxxxxxxxxxxxxxxxxxx>]

Title:
======
Yahoo! Messenger v11.5 - Buffer Overflow Vulnerability


Date:
=====
2012-02-11


References:
===========
http://www.vulnerability-lab.com/get_content.php?id=434


VL-ID:
=====
434


Introduction:
=============
Der Yahoo Messenger (eigene Schreibung Yahoo! Messenger, kurz auch Y!M, YIM 
oder Yim) ist ein verbreiteter 
Instant-Messaging-Client, sowie ein Protokoll von Yahoo. Der Yahoo Messenger 
ist kostenlos und kann mit 
einem gültigen Yahoo-Zugang heruntergeladen und installiert werden. Die 
Funktionen des Yahoo Messenger sind 
ICQ, dem AOL Instant Messenger und dem Windows Live Messenger sehr ähnlich, sie 
sind zueinander aber nicht 
kompatibel. Allerdings haben sich Microsoft und Yahoo entschlossen, ihre 
IM-Dienste zusammenzuschließen. 
Seit Version 8 von Yahoo Messenger können zumindest Textnachrichten mit dem 
Windows Live Messenger ausgetauscht werden

(Copy of the Vendor Homepage: http://de.wikipedia.org/wiki/Yahoo_Messenger )


Abstract:
=========
The Vulnerability Lab Research Team discovered a Buffer Overflow Vulnerability 
on the Yahoo Messenger v11.5


Report-Timeline:
================
2012-02-10:     Public or Non-Public Disclosure


Status:
========
Published


Affected Products:
==================
Yahoo!
Product: Instant Messenger v11.5


Exploitation-Technique:
=======================
Local


Severity:
=========
High


Details:
========
A Buffer Overflow vulnerability is detected on Yahoos  IMessenger v11.5 client 
software.
The bug is located on the drag & drop message box function of the software when 
processing special crafted file transfers. 
The vulnerability allows an local attacker to crash down(stable) the software & 
all bound yahoo components.

Vulnerable Module(s): 
                                                [+] Drag & Drop - Message Box




Picture(s):
                                                ../1.png
                                                ../2.png


Proof of Concept:
=================
This vulnerability can be exploited by local attackers. For demonstration or 
reproduce ...

PoC Video:
http://www.vulnerability-lab.com/get_content.php?id=432


Risk:
=====
The security risk of the local vulnerability is estimated as high(-).


Credits:
========
Vulnerability Research Laboratory    -   Manideep  a.k.a   z3r0 erRoR


Disclaimer:
===========
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may not apply. Any modified copy or reproduction, including partially usages, 
of this file requires authorization from Vulnerability-
Lab. Permission to electronically redistribute this alert in its unmodified 
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other media, are reserved by Vulnerability-Lab or its suppliers.

                                                Copyright © 
2012|Vulnerability-Lab




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