On Wednesday, Apple released QuickTime 7.4.1. The update is for users of Mac OS X v10.3.9, Mac OS X v10.4.7, Mac OS X v10.5 or later, and Windows Vista and Windows XP SP2. It addresses the vulnerability described in CVE-2008-0234.
By enticing a user to visit a maliciously crafted Web page, Apple says that an attacker may use an unpatched version of QuickTime to cause an unexpected application termination or arbitrary code execution. The vulnerability is a heap buffer overflow that exists in QuickTime's handling of HTTP responses when RTSP tunneling is enabled. Apple did not credit a researcher for reporting this vulnerability.