[3124] in Release_Engineering

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

Re: NetProb ticket #831, bad path in default zwgc.desc

daemon@ATHENA.MIT.EDU (Barry Jaspan)
Tue Nov 9 10:48:53 1993

Date: Tue, 9 Nov 93 10:49:09 EST
From: "Barry Jaspan" <bjaspan@security.ov.com>
To: probe@MIT.EDU
Cc: vrt@MIT.EDU, rel-eng@MIT.EDU
In-Reply-To: [3123]


   From: probe@MIT.EDU
   Date: Mon, 8 Nov 1993 12:50:31 -0500

   This simply needs a path change in the source tree; in my Zephyr
   sources, I do not bother specifying a path; I leave it to the PATH
   environment.  So, my recommendation is to change it to read: exec
   "zmailnotify".

(Pardon me for butting in, but I seem not to have removed rel-eng from
my .meetings file. :-)

That solution makes my teeth itch.  If I know a user logs in on a
certain machine often, and I know the user has locker X in PATH and
attaches locker X at login, I can log into the machine, attach some
other locker on /mit/X (like, say, my homedir), put a trojan-horse
zmailnotify in bin, and then wait for the user to log in.

Perhaps some detail about this precise attack wouldn't work, but I
still recommend an explicit path.

Barry

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