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re: Systems compromised with ShellBOT perl script - part 2

Subject: re: Systems compromised with ShellBOT perl script - part 2
Date: Wed, 20 Oct 2004 17:14:27 +0100 (BST)


On Wed, 20 Oct 2004 security@kemhosting.com wrote:

Today, hackers used the ShellBOT perl script to bring down Apache and start up
their IRC listener.  They (somehow) copied it into /tmp and executed it.  This
confuses me because I have my /tmp directory mounted rw,noexec,nosuid. Does
Perl somehow bypass this?

Instead of running...

$ /tmp/perlscript.pl

they just have to run...

$ perl /tmp/perlscript.pl

Perl will read the file in /tmp, so no attempt is made to execute it
directly.

Regards,
Jim Halfpenny

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