Vulnerable Systems:
* Apple Safari version 5.0.3 and prior
Immune Systems:
* Apple Safari version 5.0.4
The vulnerability is caused by a use-after-free error in the WebKit library when handling certain scroll events, which could be exploited by remote attackers to compromise a vulnerable system by tricking a user into visiting a specially crafted web page.
Disclosure Timeline:
2010-11-17 - Vulnerability Discovered
2011-03-09 - Apple Safari version 5.0.4 released