Intrusion Prevention

MS.IE.CSS.Style.Switching.Memory.Corruption

Description

This indicates an attack attempt against a memory-corruption vulnerability in
Microsoft Internet Explorer.
The vulnerability is caused by an error when the vulnerable software handles
Cascading Style Sheets (CSS) stylesheets. It allows a remote attacker to execute
arbitrary code via sending a crafted web page.

Affected Products

Internet Explorer 7 for Windows XP Service Pack 2 and Windows XP Service Pack 3
Internet Explorer 7 for Windows XP Professional x64 Edition and Windows XP Professional x64 Edition Service Pack 2
Internet Explorer 7 for Windows Server 2003 Service Pack 1 and Windows Server 2003 Service Pack 2
Internet Explorer 7 for Windows Server 2003 x64 Edition and Windows Server 2003 x64 Edition Service Pack 2
Internet Explorer 7 for Windows Server 2003 with SP1 for Itanium-based Systems and Windows Server 2003 with SP2 for Itanium-based Systems
Internet Explorer 7 in Windows Vista and Windows Vista Service Pack 1
Internet Explorer 7 in Windows Vista x64 Edition and Windows Vista x64 Edition Service Pack 1
Internet Explorer 7 in Windows Server 2008 for 32-bit Systems
Internet Explorer 7 in Windows Server 2008 for x64-based Systems
Internet Explorer 7 in Windows Server 2008 for Itanium-based Systems

Impact

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

Recommended Actions

Apply the patch, available from the vendor's website:
http://www.microsoft.com/technet/security/Bulletin/ms09-002.mspx

CVE References

CVE-2009-0076