The recent discovery of another IT vulnerability has been circulating in the media, being referred to as “Shell Shock” or the “Bash Bug.”
The affected software is Bash (Bourne again Shell), which is the standard command line interpreter or shell on most Linux, Mac OSX, and possibly other Unix or Unixlike operating systems. However, most systems will not be exploitable as a result of this issue because you need to get at the system’s Bash remotely to take advantage of the vulnerability. Bottom Line: In theory, this might have been bigger than Heartbleed. In practice, the number of servers that can be remotely exploited appears to be quite small.