VUPEN Security Research - Microsoft Internet Explorer "Request" Object Confusion Sandbox Bypass (Pwn2Own 2014) Website : http://www.vupen.com Twitter : http://twitter.com/vupen I. BACKGROUND --------------------- "Microsoft Internet Explorer is a web browser developed by Microsoft and included as part of the Microsoft Windows line of operating systems with more than 60% of the worldwide usage share of web browsers." (Wikipedia) II. DESCRIPTION --------------------- VUPEN Vulnerability Research Team discovered a critical vulnerability in Microsoft Internet Explorer. The vulnerability is caused by an object confusion vulnerability when processing object types within data shared between the broker and sandboxed processes, which could be exploited by a sandboxed process to achieve code execution within the broker context and bypass IE Protected Mode sandbox. III. AFFECTED PRODUCTS --------------------------- Microsoft Internet Explorer 11 Microsoft Internet Explorer 10 Microsoft Internet Explorer 9 Microsoft Internet Explorer 8 IV. SOLUTION ---------------- Apply MS14-035 security update. V. CREDIT -------------- This vulnerability was discovered by VUPEN Security. VI. ABOUT VUPEN Security --------------------------- VUPEN is the leading provider of defensive and offensive cyber security intelligence and advanced zero-day research. All VUPEN's vulnerability intelligence results exclusively from its internal and in-house R&D efforts conducted by its team of world-class researchers. VUPEN Solutions: http://www.vupen.com/english/services/ VII. REFERENCES ---------------------- https://technet.microsoft.com/library/security/ms14-035 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-1764 VIII. DISCLOSURE TIMELINE ----------------------------- 2011-11-30 - Vulnerability Discovered by VUPEN Security 2014-03-14 - Vulnerability Reported to ZDI and Microsoft During Pwn2Own 2014 2014-06-10 - Vulnerability Fixed by Microsoft 2014-07-16 - Public disclosure