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Linux Kernel Security, Again
Jason Miller, 2005-03-16

It's a sad day when an ancient fork bomb attack can still take down most of the latest Linux distributions.

Comments Mode:
silly article 2005-03-17
Anonymous (4 replies)
silly article 2005-03-18
Anonymous
silly response 2005-03-18
Anonymous
silly comment 2005-03-18
Anonymous (1 replies)
silly article 2005-03-18
Anonymous
Linux Kernel Security, Again 2005-03-17
Karyl Stein (1 replies)
Linux Kernel Security, Again 2005-03-17
Jason V. Miller (Author) (1 replies)
Linux Kernel Security, Again 2005-03-18
Anonymous
Linux Kernel Security, Again 2005-03-17
Anonymous (3 replies)
Linux Kernel Security, Again 2005-03-17
Jason V. Miller (Author) (3 replies)
Linux Kernel Security, Again 2005-03-17
mrsad (1 replies)
Linux Kernel Security, Again 2005-03-17
Jason V. Miller (Author) (1 replies)
Linux Kernel Security, Again 2005-03-18
Anonymous (2 replies)
Linux Kernel Security, Again 2005-03-18
crf (2 replies)

As an old coworker had in his sig: Unix doesn't prevent you from doing stupid things, because that would also prevent you from doing clever things.

I think the point that Jason is missing here is that the majority of people who are using Linux (or any *nix, really) are generally using it either as an individual's workstation or strictly as a server. There seems to be very little call these days, either in home or in business use, for servers that have several users. What do I care if a fork bomb can take out my home PC if I'm the only person using it? What do I care if a web server can be taken out by a fork bomb when the only local user is its administrator?

Fork bombs, as mere DoS, are really the least of a system administrator's worries. Most versions of most Linux distributions are almost guaranteed to have a buffer overflow in there somewhere that a local user can take advantage of to get root on the system. In contrast to your pathetic fork bomb, those carry the very real threat of further compromised security (trojans, etc.) and significant data loss.

With that in mind, it's generally not safe to grant local accounts to untrusted people to begin with, and Linux is not the only operating system for which randomly handing out local accounts is a foolish thing to do.

You're making pebbles sound like asteroids. Fork bombs are nothing; let's focus on the REAL problems.

crf


[ reply ]

Link to this comment: http://www.securityfocus.com/comments/columns/308/31030#31030
Linux Kernel Security, Again 2005-03-18
Anonymous
Linux Kernel Security, Again 2005-03-18
Anonymous
Linux Kernel Security, Again 2005-03-20
Anonymous
Linux Kernel Security, Again 2005-03-18
Anonymous
Linux Kernel Security, Again 2005-03-19
CrossChris
Linux Kernel Security, Again 2005-03-18
Anonymous
Linux Kernel Security, Again 2005-03-18
Anonymous
simple fork bomb? 2005-03-17
Anonymous (1 replies)
simple fork bomb? 2005-03-17
Jason V. Miller (Author) (3 replies)
simple fork bomb? 2005-03-17
Anonymous
simple fork bomb? 2005-03-17
Anonymous (1 replies)
simple fork bomb? 2005-03-17
Jason V. Miller (Author) (1 replies)
simple fork bomb? 2005-03-18
Stephen Samuel (3 replies)
simple fork bomb? 2005-03-18
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simple fork bomb? 2005-03-18
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simple fork bomb? 2005-03-20
Anonymous
simple fork bomb? 2005-03-20
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Linux Kernel Security, Again 2005-03-17
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Intended use dictates the limits 2005-03-23
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Linux Kernel Security, Again 2005-03-17
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Linux Kernel Security, Again 2005-03-17
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LSM is in the standard kernel. 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-19
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Once again... 2005-03-18
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re: Once again... 2005-03-18
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Debian not vulnerable? 2005-03-18
Wilmer van der Gaast (2 replies)
Debian not vulnerable? 2005-03-18
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Debian not vulnerable? 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Debian IS vulnerable! 2005-03-18
Anonymous
Debian IS vulnerable! 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Gentoo vulnerable? 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-20
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Linux Kernel Security, Again 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Jason's opinion is too biased 2005-03-18
Anonymous (2 replies)
Jason's opinion is too biased 2005-03-18
Anonymous
Jason's opinion is too biased 2005-03-18
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Linux Kernel Security, Again 2005-03-18
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Take the first step author. 2005-03-18
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Take the first step author. 2005-03-18
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Solution was?... 2005-03-18
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Solution was?... 2005-03-18
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Linux Kernel Security, Again 2005-03-19
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Linux Kernel Security, Again 2005-03-19
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Linux Kernel Security 2005-03-19
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huwr
Fresh FreeBSD 5.3 install 2005-03-20
Anonymous
Try, disk I/O and mem. alloc 2005-03-20
Bipin Gautam
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Why its Valid! 2005-03-21
Anonymous
Mandrake 10.1 didn't freeze... 2005-03-21
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DEBIAN 2005-03-21
Anonymous (1 replies)
DEBIAN 2005-03-22
Anonymous (1 replies)
DEBIAN 2005-03-23
Lucio
Linux Kernel Security, Again 2005-03-23
Anonymous
Linux Kernel Security, Again 2005-03-24
Anonymous
PAM 2005-03-24
Maestr0
Linux Kernel Security, Again 2005-03-28
Anonymous
Linux Kernel Security, Again 2005-03-29
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