Advisory Details

August 8th, 2006

Microsoft Internet Explorer CSS Class Ordering Memory Corruption Vulnerability

ZDI-06-027
ZDI-CAN-066

CVE ID CVE-2006-3450
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4605. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Microsoft Internet Explorer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific vulnerability exists due to improper handling of CSS class values. Accessing a specially crafted CSS element via document.getElementByID causes a memory corruption eventually leading to code execution.

VENDOR RESPONSE Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/MS06-042.mspx
DISCLOSURE TIMELINE
  • 2006-06-14 - Vulnerability reported to vendor
  • 2006-08-08 - Coordinated public release of advisory
CREDIT Sam Thomas
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