Emacs 20 does not properly set permissions for a slave PTY device when starting a new subprocess, which allows local users to read or modify communications between Emacs and the subprocess.Referenceshttp://www.securityfocus.com/templates/archive.pike?list=1&date=2000-04-15&msg=tg4s8zioxq.fsf%40mercury.rus.uni-stuttgart.dehttp://www.securityfocus.com/bid/1125