TippingPoint Zero Day Initiative
 

Mozilla Firefox AttributeChildRemoved Use-After-Free Remote Code Execution Vulnerability

ZDI-12-110: June 28th, 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 12418. 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 within the way Firefox handles nsDOMAttribute child removal. It is possible to remove a child without setting the removed child pointer to NULL, thus leaving it still accessible as a dangling pointer. Subsequent use of this pointer allows for remote code execution.

Vendor Response

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

Disclosure Timeline

    2011-12-01 - Vulnerability reported to vendor
    2012-06-28 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    regenrecht