TippingPoint Zero Day Initiative
 

Mozilla Firefox showModalDialog Cross-Domain Scripting Vulnerability

ZDI-10-019: February 19th, 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 8399. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to bypass specific script execution enforcements on vulnerable installations of Mozilla Firefox. User interaction is required to exploit this vulnerability in that the target must visit a malicious page.

The specific flaw exists in the lack of cross domain policy enforcement. Through usage of the showModalDialog() JavaScript method an attacker can gather sensitive information from another website. This vulnerability can be exploited to obtain website credentials not originating from the attacking site.

Vendor Response

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

Disclosure Timeline

    2009-08-06 - Vulnerability reported to vendor
    2010-02-19 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Anonymous