ZDI-11-158: Mozilla Firefox OBJECT mChannel Remote Code Execution Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-11-158

May 10, 2011

-- CVE ID:
CVE-2011-0065

-- CVSS:
9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)

-- Affected Vendors:
Mozilla

-- Affected Products:
Mozilla Firefox

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TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 11197. 
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    http://www.tippingpoint.com

-- 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.

The specific flaw exists within the OnChannelRedirect method. When an
OBJECT element has no mChannel assigned, it is possible to call the 
|OnChannelRedirect| method, setting a nearly arbitrary object as the
channel in use. |mChannel| will become a dangling pointer, allowing an
attacker to execute arbitrary code under the context of the user running
the browser.

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

http://www.mozilla.org/security/announce/2011/mfsa2011-13.html

-- Disclosure Timeline:
2011-02-17 - Vulnerability reported to vendor
2011-05-10 - Coordinated public release of advisory

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

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