Intrusion Prevention

MS.Silverlight.Double.Dereference.Code.Execution

Description

This indicates an attack attempt against a Code Execution vulnerability in Microsoft Silverlight.
The vulnerability is caused by an error when the vulnerable software handles a malicious Silverlight Application. It allows a remote attacker to execute arbitrary code via a crafted Silverlight Application.

Affected Products

Microsoft Silverlight 5 when installed on Mac
Microsoft Silverlight 5 Developer Runtime when installed on Mac
Microsoft Silverlight 5 when installed on all supported releases of Microsoft Windows clients
Microsoft Silverlight 5 Developer Runtime when installed on all supported releases of Microsoft Windows clients
Microsoft Silverlight 5 when installed on all supported releases of Microsoft Windows servers
Microsoft Silverlight 5 Developer Runtime when installed on all supported releases of Microsoft Windows servers
Microsoft Silverlight 5.0 prior to 5.1.20125.0

Impact

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

Recommended Actions

Apply the most recent upgrade or patch from the vendor.
http://technet.microsoft.com/security/bulletin/MS13-022

CVE References

CVE-2013-0074