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Category:   Application (Generic)  >   Microsoft .NET Vendors:   Microsoft
Microsoft .NET Inheritance Restriction Error Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1026162
SecurityTracker URL:
CVE Reference:   CVE-2011-1253   (Links to External Site)
Date:  Oct 11 2011
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.5.1, 4
Description:   A vulnerability was reported in Microsoft .NET. A remote user can execute arbitrary code on the target user's system.

The software does not properly restrict inheritance within classes. A remote user can create specially crafted HTML that, when loaded by the target user with a web browser capable of running XAML applications, will execute arbitrary code on the target user's system. The code will run with the privileges of the target user.

A remote authenticated user can upload a custom ASP.NET application to a web hosting environment and run the application to break out of the sandbox and attack the web hosting system.

A specially crafted Windows .NET application can bypass Code Access Security (CAS) restrictions.

An anonymous researcher reported this vulnerability via Beyond Security's SecuriTeam Secure Disclosure program.

Impact:   A remote user can execute arbitrary code on the target system.
Solution:   The vendor has issued a fix.

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

The Microsoft advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Access control error
Underlying OS:  Windows (2003), Windows (2008), Windows (7), Windows (Vista), Windows (XP)

Message History:   None.

 Source Message Contents

[Original Message Not Available for Viewing]

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