[125] in linux-security and linux-alert archive

home help back first fref pref prev next nref lref last post

Re: "Find all the SUID programs." Fine. So which *should* be SUID?

daemon@ATHENA.MIT.EDU (Panzer Boy)
Sun Mar 12 19:27:20 1995

To: linux-security@tarsier.cv.nrao.edu
From: panzer@dhp.com (Panzer Boy)
Date: 12 Mar 1995 15:37:12 -0500
Reply-To: linux-security@tarsier.cv.nrao.edu

R.E.Wolff@et.tudelft.nl wrote:
: > *** Procmail, Screen, and tin (suid news)
: > -rwsr-sr-x   1 news     news       222212 Aug 12  1994 /usr2/local/bin/tin
: I wouldn't trust "tin".

It's suid NEWS, not root.  Though indirectly you can get root from that.  
I know.  Get news, modify rc.news file, run by root... :)  This was 
originally run as root so that I could have it create index files, as 
this is no longer needed (I have news locally) tin is no longer suid root.


: > *** System utils that mod files in restricted space
: > -rwsr-xr-x   1 root     root        17412 May  6  1994 /usr/bin/chfn
: > -rwsr-xr-x   1 root     root        13316 May  6  1994 /usr/bin/chsh
: I'd group these with "passwd".
I don't have a group passwd, don't see the use other than convience.

: for your information: the "rule" is that slackware comes with a clean 
: /usr/local. All that ends up there is yours.....
Kinda strange way to do it, since have of slackware is made up of things 
that should be in /usr/local/bin.  Again, this is personal taste, so 
whatever people like. :)

: rlogin tells the other side "this user is called wolff, can  you let him
: in". If you allow rlogind to accept this from any port, any user could
: write a new rlogin program that pretends to be anyone
The whole "r" program problem is always a pain.  If you have a local 
cluster of machines you run, you want people to be able to rsh back and 
forth around them and not worry about having to type their passwords 
again.  Though you want to prevent any attempt at doing this from the 
outside including if these users have + + in their .rhosts file due to 
some "mistake".

-- 
 -Matt     (panzer@dhp.com)                         DI-1-9026
 "That which can never be enforced should not be prohibited."

home help back first fref pref prev next nref lref last post