Advisory Details

December 8th, 2009

Microsoft Internet Explorer IFrame Attributes Circular Reference Dangling Pointer Vulnerability

ZDI-09-088
ZDI-CAN-547

CVE ID CVE-2009-3674
CVSS SCORE
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Internet Explorer 8
TIPPINGPOINT™ IPS CUSTOMER PROTECTION TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9325. 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 web page.

The specific flaw exists during deallocation of a circular dereference for a CAttrArray object. If the CAttrArray object has been freed prior to the tearing down of the webpage, the application will access the freed memory during the deallocation of the circular dereference. This can lead to code execution under the context of the currently logged in user.

VENDOR RESPONSE Microsoft has issued an update to correct this vulnerability. More details can be found at:
http://www.microsoft.com/technet/security/bulletin/ms09-072.mspx
DISCLOSURE TIMELINE
  • 2009-08-10 - Vulnerability reported to vendor
  • 2009-12-08 - Coordinated public release of advisory
CREDIT Anonymous
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