JavaScript privilege escalation and arbitrary code execution — Mozilla

Mozilla contributors moz_bug_r_a4, Boris Zbarsky, and Johnny Stenback reported a series of vulnerabilities which allow scripts from page content to run with elevated privileges. moz_bug_r_a4 demonstrated additional variants of MFSA 2007-25 and MFSA2007-35 (arbitrary code execution through XPCNativeWrapper pollution). Additional vulnerabilities reported separately by Boris Zbarsky, Johnny Stenback, and moz_bug_r_a4 showed that the browser could be forced to run JavaScript code using the wrong principal leading to universal XSS and arbitrary code execution.