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Category:   Application (Instant Messaging/IRC/Chat)  >   Windows Live Messenger Vendors:   Microsoft
Windows Live Messenger Contact List Heap Overflow
SecurityTracker Alert ID:  1016373
SecurityTracker URL:
CVE Reference:   CVE-2006-3250   (Links to External Site)
Updated:  May 11 2009
Original Entry Date:  Jun 25 2006
Impact:   Execution of arbitrary code via network, User access via network
Exploit Included:  Yes  
Version(s): 8.0
Description:   JAAScois reported a vulnerability in Windows Live Messenger. A remote user can cause arbitrary code to be executed on the target user's system.

A remote user can create a specially crafted contact list (*.ctt) file that, when loaded by the target user, will trigger a heap overflow and execute arbitrary code on the target system. The code will run with the privileges of the target user.

A demonstration exploit is available at:

Impact:   A remote user can create a file that, when loaded by the target user, will execute arbitrary code on the target user's system.
Solution:   No solution was available at the time of this entry.
Vendor URL: (Links to External Site)
Cause:   Boundary error
Underlying OS:  Windows (Any)

Message History:   None.

 Source Message Contents

Subject:  Windows Live Messenger 8.0 Heap Overflow

Windows Live Messenger 8.0 ( Contact List *.ctt ) Heap Overflow
// by: JAAScois
// [ 25/06/2006 ]
// Exploit at: 0x0076228A => kernel32.FormatMessageW
// Example:
// download *.ctt file :
// Messenger => Menu => Contact => Import Instant Messaging Contacts =>
Select CLexploits.ctt
// Heap size = 4096 => Overflow

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