Mozilla Firefox JSON.stringify Dangling Pointer Remote Code Execution Vulnerability

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.