[7446] in bugtraq
who
daemon@ATHENA.MIT.EDU (Paul Boehm)
Wed Jul 29 00:32:41 1998
Date: Tue, 28 Jul 1998 20:27:21 +0200
Reply-To: Paul Boehm <paul@BOEHM.ORG>
From: Paul Boehm <paul@BOEHM.ORG>
To: BUGTRAQ@NETSPACE.ORG
Hi,
the 'who' program is on some systems in a privileged group
which is allowed to read utmp. On redhat linux 5.1 you can
easily crash who by many different ways (e.g. try who /bin/bash)
on freebsd you can use it to view parts of the content of files that
privileged group may read(try who /privileged/group/file).
this is no big deal with security, but gaining a more privileged group
sometimes may be the key to root compromise.
bye,
pb
--
[ Paul S. Boehm | paul@boehm.priv.at | http://paul.boehm.org/ | infected@irc ]
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