ZDI-10-131: Mozilla Firefox nsTreeSelection Dangling Pointer Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-131
July 20, 2010

-- CVE ID:
CVE-2010-2753

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

-- Affected Vendors:
Mozilla Firefox

-- Affected Products:
Mozilla Firefox 3.6.x

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-- 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 implementation of XUL <tree>
element's "selection" attribute. There is an integer overflow when
calculating the bounds of a new selection range. When calling
adjustSelection on this manged range both ranges are deleted leaving a
dangling reference. A remote attacker can exploit this vulnerability to
execute arbitrary code under the context of the browser.


-- 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/mfsa2010-40.html

-- Disclosure Timeline:
2010-06-09 - Vulnerability reported to vendor
2010-07-20 - Coordinated public release of advisory

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

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