Apache and OpenSSH Vulnerabilities (Linux Journal)
If you don't know for sure if your Linux box runs Apache or OpenSSH, you are at the greatest risk. We do not have space here to teach you about your package management tool. All we can say is take your system off the Net, learn how to check what you have installed and either remove these packages or upgrade them. Many Linux distributions come with services running "out of the box" and don't tell users about everything that is present. Do not assume that you're not running Apache or OpenSSH unless you know for sure how to check."