TippingPoint Zero Day Initiative
 

Microsoft Internet Explorer 9 CTreeNode Remote Code Execution Vulnerability

ZDI-12-200: December 21st, 2012

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12584. 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 way Internet Explorer handles CTreeNode objects. By manipulating a document's elements an attacker can force a dangling pointer to be reused after it has been freed. The issue lies in a possible type confusion between a CTreeNode object and an ISpanQualifier instance during the layout of a document being performed. An attacker can leverage this vulnerability to execute code under the context of the current process.

Vendor Response

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

Disclosure Timeline

    2012-07-24 - Vulnerability reported to vendor
    2012-12-21 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Stephen Fewer of Harmony Security (www.harmonysecurity.com)