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Re: [HERT] Advisory #002 Buffer overflow in lsof

daemon@ATHENA.MIT.EDU (Alex Shnitman)
Sun Feb 21 21:14:52 1999

Date: 	Sat, 20 Feb 1999 23:10:54 +0200
Reply-To: Alex Shnitman <alexsh@HECTIC.NET>
From: Alex Shnitman <alexsh@HECTIC.NET>
To: BUGTRAQ@NETSPACE.ORG
In-Reply-To:  <m10E1KE-0007U1C@the-village.bc.nu>

Alan Cox writes:

 > > In a few mins I noticed all linux versions are chown .kmem; chmod g+s
 > > lsof...  on linux /dev/kmem is +w for gid kmem, on bsd too (probably, I
 > > didn't checked that), so... all of std. distributions are vuln. without
 >
 > crw-r-----   1 root     kmem       1,   2 May  5  1998 /dev/kmem
 >
 > Red Hat 5.2
 >
 > crw-r-----   1 root     kmem       1,   2 Jan  1  1980 /dev/kmem
 >
 > Red Hat 4.2

crw-rw----   1 root     kmem       1,   2 Jul 21  1998 /dev/kmem

Debian 2.0

Ack! What breaks if I change it?


--
Alex Shnitman
alexsh@hectic.net, alexsh@linux.org.il
http://alexsh.hectic.net

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