Advisory: Webkit – Visiting a maliciously crafted website may lead to a cross-site scripting attack

More from: http://support.apple.com/kb/HT3613

CVE-ID: CVE-2006-2783

Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.7, Mac OS X Server v10.5.7, Windows XP or Vista

Impact: Visiting a maliciously crafted website may lead to a cross-site scripting attack

Description: WebKit ignores Unicode byte order mark sequences when parsing web pages. Certain websites and web content filters attempt to sanitize input by blocking specific HTML tags. This approach to filtering may be bypassed and lead to cross-site scripting when encountering maliciously-crafted HTML tags containing byte order mark sequences. This update addresses the issue through improved handling of byte order mark sequences. Credit to Chris Weber of Casaba Security, LLC for reporting this issue.