Ethical Hacking

Learn to find vulnerabilities before the bad guys do! Gain real world hands on hacking experience in our state of the art hacking lab. Course designed and taught by expert instructors with years of penetration testing experience. 12 student maximum in every class. Certification attempt included in every package.
Computer Forensics Training at InfoSec Institute

Gain the in-demand skills of a certified computer examiner, learn to recover trace data left behind by fraud, theft, and cybercrime perpetrators. Discover the source of computer crime and abuse at your organization so that it never happens again. All of our class sizes are guaranteed to be 12 students or less to facilitate one-on-one interaction with one of our expert instructors.




Network Security FullDisclosure
[Top] [All Lists]

Re: [Full-disclosure] Linux + bash and a silver fork

Subject: Re: [Full-disclosure] Linux + bash and a silver fork
Date: Mon, 27 Aug 2007 14:11:24 -0400
Excellent discovery!

I think you should call it a "fork bomb"!

;-)


http://en.wikipedia.org/wiki/Fork_bomb



Niko Lilja wrote:
Well, as has been said when you realize the truth that there is no 
spoon, but instead there'll be a
bunch of forks instead, at least in linux on bash shell, tested ubuntu 
and RHEL this far.

By throwing a nice piece of line code as a command in bash shell (normal 
user) you can pretty much
crash the whole server cause denial of service by giving a command in bash:

:() { :&:; } ;:


Almost as the ascii would be smiling..

- N


------------------------------------------------------------------------

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

<Prev in Thread] Current Thread [Next in Thread>