TippingPoint Zero Day Initiative
 

Mozilla Firefox DOM Attribute Cloning Remote Code Execution Vulnerability

ZDI-10-134: July 20th, 2010

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 10025. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Mozilla Firefox. 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 due to a workaround that was implemented in order to support recursive cloning of attribute nodes. If an event is added to the first attribute node, the application can be made to free the node, and then later access a reference to it. This can lead to code execution under the context of the application.

Vendor Response

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

Disclosure Timeline

    2010-06-17 - Vulnerability reported to vendor
    2010-07-20 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    regenrecht