(Pwn2Own) Mozilla Firefox resource: URL Remote Code Execution Vulnerability

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 handling of documents loaded through the resource: URL. As the same flag was used for chrome: and resource: URLs, these pages were able to subsequently load privileged chrome pages. By combining this with a same-origin policy bypass, an attacker could execute arbitrary code in the context of the current user.