Macintosh users should brace for another round of updates as Apple releases Security Update 2009 – 003 and Mac OS X v10.5.8.
The new updates address about 18 security vulnerabilities. Most of the identified vulnerabilities are considered critical and could have the potential of actually being exploited. For example, a vulnerability in the ColorSync profile could mean that opening a malicious image file will result in someone taking over your computer. Other similar flaws have been plugged with the new update. Among these is a potentially catastrophic vulnerability regarding AppleTalk response packets maliciously encoded that can execute arbitrary code execution.
You can access the update by visiting http://www.apple.com/support/downloads/.