This attack could pose a serious security threat. You should take immediate action to stop any damage or prevent further damage from happening.
This signature detects attempts to exploit a remote code execution vulnerability that exists in the Vector Markup Language (VML) implementation in Microsoft Windows.
Microsoft Windows is prone to a buffer-overrun vulnerability that arises because of an error in the processing of Vector Markup Language documents in 'Vgx.dll'. When a vulnerable application is used to view a maliciously designed Vector Markup Language document, a buffer overrun occurs.
The problem occurs because the product of two integers multiplied together is not properly bounds checked. This could permit an attacker to allocate a smaller amount of memory than is required, and potentialy overwrite a function pointer stored on the heap.
An attacker can exploit this issue to execute arbitrary code within the context of the affected application.
Microsoft Internet Explorer 5.0.1, 5.0.1 SP1, 5.0.1 SP2, 5.0.1 SP3, 5.0.1 SP4, 6.0, 6.0 SP1, 6.0 SP2, 7.0, 7.0 beta2
Microsoft Windows 2000 Advanced Server SP1, SP2, SP3, SP4
Microsoft Windows 2000 Datacenter Server SP1, SP2, SP3, SP4
Microsoft Windows 2000 Professional SP1, SP2, SP3, SP4
Microsoft Windows 2000 Server SP1, SP2, SP3, SP4
Microsoft Windows Server 2003 Datacenter Edition SP1
Microsoft Windows Server 2003 Datacenter Edition Itanium SP1
Microsoft Windows Server 2003 Datacenter x64 Edition
Microsoft Windows Server 2003 Enterprise Edition SP1
Microsoft Windows Server 2003 Enterprise Edition Itanium SP1
Microsoft Windows Server 2003 Enterprise x64 Edition
Microsoft Windows Server 2003 Standard Edition SP1
Microsoft Windows Server 2003 Standard x64 Edition
Microsoft Windows Server 2003 Web Edition SP1
Microsoft Windows XP
Microsoft Windows XP Home SP1, SP2
Microsoft Windows XP Media Center Edition SP1, SP2
Microsoft Windows XP Professional SP1, SP2
Microsoft Windows XP Professional x64 Edition
Microsoft Windows XP Tablet PC Edition SP1, SP2
Workaround: The following workarounds may help defend against exploitation of this vulnerability:
Microsoft has released detailed workaround information regarding this issue; please see the referenced advisory for more information.Solution:The vendor has released security advisory MS07-004 detailing updates to address this issue in supported versions of affected applications. Please see the referenced advisory for details on obtaining and applying the appropriate updates.