Advisory Details

July 20th, 2010

Mozilla Firefox nsTreeSelection Dangling Pointer Remote Code Execution Vulnerability

ZDI-10-131
ZDI-CAN-755

CVE ID CVE-2010-2753
CVSS SCORE 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Mozilla Firefox
AFFECTED PRODUCTS 3.6.x
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10035. For further product information on the TippingPoint IPS: 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 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 regenrecht
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