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Category:   Application (Generic)  >   Windows Backup Manager Vendors:   Microsoft
Windows Backup Manager May Load DLLs Unsafely and Remotely Execute Arbitrary Code
SecurityTracker Alert ID:  1024948
SecurityTracker URL:  http://securitytracker.com/id/1024948
CVE Reference:   CVE-2010-3145   (Links to External Site)
Date:  Jan 11 2011
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   A vulnerability was reported in Windows Backup Manager. A remote user may be able to cause arbitrary code to be executed on the target user's system.

The application passes an insufficiently qualified path when loading an external library. A remote user can exploit this by creating a specially crafted DLL file on a remote share (e.g., WebDAV, SMB share). When a '.wbcat' file in the same directory as the DLL file is loaded by the target user, the application may load the remote user's DLL instead of the intended DLL and execute arbitrary code. The code will run with the privileges of the target user.

This type of exploit is also known as "binary planting" or "DLL preloading".

Impact:   A remote user can may be able to cause a target application to execute arbitrary code on the target user's system.
Solution:   The vendor has issued the following fixes:

Windows Vista Service Pack 1 and Windows Vista Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?familyid=4EEAAD20-729C-4594-8853-E4AE55E9D491

Windows Vista x64 Edition Service Pack 1 and Windows Vista x64 Edition Service Pack 2:

http://www.microsoft.com/downloads/details.aspx?familyid=B2839CD0-1958-4A22-9AAC-0E0AA8F2B52C

A restart is not required.

The Microsoft advisory is available at:

http://www.microsoft.com/technet/security/bulletin/ms11-001.mspx

Vendor URL:  www.microsoft.com/technet/security/bulletin/ms11-001.mspx (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (Vista)
Underlying OS Comments:  Vista SP2 and prior service packs

Message History:   None.


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