TippingPoint Zero Day Initiative

Microsoft Internet Explorer Type Confusion Remote Code Execution Vulnerability

ZDI-13-223: September 11th, 2013


CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 13156. For further product information on the TippingPoint IPS:

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 or open a malicious file.

The specific flaw exists within the Internet Explorer JavaScript engine that allows an attacker to use a pointer for an object that was set earlier as an immediate value without proper checks. An attacker can leverage this situation to execute code under the context of the user running the browser.

Vendor Response

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

Disclosure Timeline

    2013-06-27 - Vulnerability reported to vendor
    2013-09-11 - Coordinated public release of advisory


This vulnerability was discovered by:
    Arthur Gerkis