Apple has posted Security Update 2007-009. It is recommended for all users and addresses security problems with a wide range of Mac OS X apps and services. The update applies to Mac OS X 10.4.11 and 10.5.1.
According to Apple, the security update improves the security of the following components:
- Core Foundation
- CUPS
- Flash Player Plug-in
- Launch Services
- perl
- python
- Quick Look
- ruby
- Safari
- Samba
- Shockwave Plug-in
- Spin Tracer
Apple has posted detailed information on this update at their website in article number 61798.
The update is available in System Preferences -> Software Update.