Advisory Details

March 2nd, 2011

Mozilla Firefox JSON.stringify Dangling Pointer Remote Code Execution Vulnerability

ZDI-11-103
ZDI-CAN-971

CVE ID CVE-2011-0055
CVSS SCORE 9, (AV:N/AC:L/Au:N/C:P/I:P/A:C)
AFFECTED VENDORS Mozilla
AFFECTED PRODUCTS Firefox
TREND MICRO CUSTOMER PROTECTION Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 10843. 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 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 js3250.dll. In the JSON.stringify() call chain js_HasOwnProperty() is called with an invalid pointer. The pointer becomes invalid due to being unrooted and garbage collection occurring. Dereferecing of this pointer allows a remote attacker to execute arbitrary code in the context of the user running the browser.

ADDITIONAL DETAILS Mozilla has issued an update to correct this vulnerability. More details can be found at:
http://www.mozilla.org/security/announce/2011/mfsa2011-03.html
DISCLOSURE TIMELINE
  • 2010-12-01 - Vulnerability reported to vendor
  • 2011-03-02 - Coordinated public release of advisory
CREDIT regenrecht
BACK TO ADVISORIES