TippingPoint Zero Day Initiative

Microsoft Internet Explorer setCapture Memory Corruption Vulnerability

ZDI-09-036: June 10th, 2009


Affected Vendors

Affected Products

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 vulnerability exists when calling the setCapture method on a range of objects. When setCapture is called on a collection of specially crafted objects memory becomes corrupted. When the capture is released, arbitrary memory is accessed potentially leading to remote code execution. Exploitation of this vulnerability will lead to system compromise under the credentials of the currently logged in user.

Vendor Response

Microsoft has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2009-01-26 - Vulnerability reported to vendor
    2009-06-10 - Coordinated public release of advisory


This vulnerability was discovered by:
    Peter Vreugdenhil