Advisory Details

December 11th, 2007

Microsoft Internet Explorer setExpression Code Execution Vulnerability

ZDI-07-073
ZDI-CAN-229

CVE ID CVE-2007-3902
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 3133, 3143, 4163, 4954, 5. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS

This vulnerability allows remote 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 flaw exists in the CRecalcProperty function in mshtml.dll. When rendering HTML after calling the setExpression methods, followed by a modification of the outerHTML property of a programatically created element. The vulnerable code dereferences a previously freed memory location which can be leveraged to execute arbitrary code.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/ms07-069.mspx
DISCLOSURE TIMELINE
  • 2007-07-20 - Vulnerability reported to vendor
  • 2007-12-11 - Coordinated public release of advisory
CREDIT Anonymous
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