is there a way / software to find out which security patches my different CentOS systems are missing? Maybe with the according CESA announcement displayed?
I'll put in a plug for a software project that I am developer/contributor for, OpenVAS (Open Vulnerability Assessment Scanner).
If you configure OpenVAS to use a SSH enabled login account, it will tell you which security patches you are missing. If you do just a remote scan, it will give you an incomplete list of missing patches.
It is cross-platform too.
-geoff
--------------------------------- Geoff Galitz Blankenheim NRW, Germany http://www.galitz.org/ http://german-way.com/blog/