On Fri, Oct 27, 2000 at 01:52:26PM +0800, Livia Admin wrote: > Please reply to my original address cause i'm not subscribe in the list. > > > I'm using debian/woody and kernel-2.4-test*. > anyone pls try running "yes `yes`" as any user if it crashes your system.. > cause it crashes mine. > thanks
this is just a simple DoS, it is because your system is not configured with resource limits, that will also cripple or kill a 2.2 box without limits. on my system with limits: [EMAIL PROTECTED] eb]$ bash [EMAIL PROTECTED] eb]$ PS1="$ " $ yes `yes` bash: xrealloc: cannot reallocate 16777216 bytes (0 bytes allocated) [EMAIL PROTECTED] eb]$ no thrashing, swapping, crashing. it just sits for a few seconds and then my login shell is killed as above. there was a similer DoS attack noted on BugTraq, that one was su `cat /dev/urandom` the solution: configure resource limits. -- Ethan Benson http://www.alaska.net/~erbenson/
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