TippingPoint Zero Day Initiative

Mozilla Firefox nsDOMAttribute MutationObserver Remote Code Execution Vulnerability

ZDI-10-264: December 9th, 2010


CVSS Score

Affected Vendors

Affected Products

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 application's support of the NodeIterator API used for element traversal. Due to a particular element not implementing functionality required by the API, a use-after free vulnerability can be forced to occur. This can be used to achieve 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

    2010-08-25 - Vulnerability reported to vendor
    2010-12-09 - Coordinated public release of advisory


This vulnerability was discovered by: