Intrusion Prevention

MS.NET.Framework.CLR.Virtual.Method.Delegate.Code.Execution

Description

This indicates an attack attempt against a code-execution vulnerability in the Microsoft .NET Framework.
The vulnerability is caused by an error in the Common Language Runtime (CLR) when it handles interfaces and delegations to virtual methods. It may allow remote attackers to execute arbitrary code by sending a crafted XBAP file, a crafted ASP.NET application, or a crafted .NET Framework application.

Affected Products

Microsoft .NET Framework 2.0 SP1, 2.0 SP2, 3.5, 3.5 SP1, and 3.5.1
Microsoft Silverlight 2 and 3 before 3.0.50611.0 on Windows
Microsoft Silverlight 2 and 3 before 3.0.41130.0 on Mac OS X

Impact

System Compromise: Remote attackers can gain control of vulnerable systems.

Recommended Actions

Refer to the vendor's web site for the suggested workaround:
http://www.microsoft.com/technet/security/Bulletin/MS10-060.mspx

CVE References

CVE-2010-1898