system
Describe <CVE-2012-2899>.
user
What is <CVE-2012-2899>?
assistant
Google Chrome before 21.0.1180.82 on iOS makes certain incorrect calls to WebView methods that trigger use of an applewebdata: URL, which allows remote attackers to bypass the Same Origin Policy and conduct Universal XSS (UXSS) attacks via vectors involving the document.write method..