ZDI-10-019: Mozilla Firefox showModalDialog Cross-Domain Scripting Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-019
February 19, 2010

-- CVE ID:
CVE-2009-3988

-- Affected Vendors:
Mozilla Firefox

-- Affected Products:
Mozilla Firefox 3.0.x

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-- 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:

http://www.mozilla.org/security/announce/2010/mfsa2010-04.html

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

-- Credit:
This vulnerability was discovered by:
    * Anonymous

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