TippingPoint Zero Day Initiative

Microsoft Internet Explorer componentFromPoint Memory Corruption Vulnerability

ZDI-08-069: October 14th, 2008


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6468. 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.

The specific flaw exists in the componentFromPoint() method exposed through JavaScript. A problem in the implementation of this method for a particular object can be used to arbitrarily control memory access. By exploiting this an attacker can gain access to the target system 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

    2008-06-25 - Vulnerability reported to vendor
    2008-10-14 - Coordinated public release of advisory


This vulnerability was discovered by:
    Ivan Fratric, http://ifsec.blogspot.com