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Category:   Application (Generic)  >   Microsoft .NET Vendors:   Microsoft
Microsoft .NET Bugs Let Remote Users Execute Arbitrary Code and Deny Service
SecurityTracker Alert ID:  1027048
SecurityTracker URL:  http://securitytracker.com/id/1027048
CVE Reference:   CVE-2012-0162, CVE-2012-0164   (Links to External Site)
Date:  May 8 2012
Impact:   Denial of service via network, Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 4
Description:   Two vulnerabilities were reported in Microsoft .NET Framework. A remote user can cause arbitrary code to be executed on the target user's system. A remote user can cause denial of service conditions.

A remote user can create a specially crafted file that, when loaded by the target user via an XAML browser application, will trigger a buffer allocation error and execute arbitrary code on the target system or bypass Code Access Security (CAS) restrictions [CVE-2012-0162]. The code will run with the privileges of the target user.

Vitaliy Toropov (via Tipping Point's Zero Day Initiative) reported this vulnerability.

A remote user can trigger an index comparison error and cause applications that use Windows Presentation Foundation (WPF) APIs to stop responding until manually restarted [CVE-2012-0164].

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.

A remote user can cause applications that use Windows Presentation Foundation (WPF) APIs to stop responding. A manual restart is required to return to normal operations.

Solution:   The vendor has issued a fix.

A patch matrix is available in the vendor's advisory.

A restart is required.

The Microsoft advisory is available at:

http://technet.microsoft.com/en-us/security/bulletin/ms12-034

Vendor URL:  technet.microsoft.com/en-us/security/bulletin/ms12-034 (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2003), Windows (2008), Windows (7), Windows (Vista), Windows (XP)
Underlying OS Comments:  XP SP3, 2003 SP2, 2008 R2 SP1, Vista SP2, 7 SP1, 2008 SP2; and prior service packs

Message History:   None.


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