Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site lsuc.UUCP Path: utzoo!lsuc!dave From: dave@lsuc.UUCP (David Sherman) Newsgroups: net.unix-wizards Subject: Re: Re: UNIX source vs. binary (NOT A LEGAL ARGUMENT) Message-ID: <427@lsuc.UUCP> Date: Mon, 18-Feb-85 21:17:37 EST Article-I.D.: lsuc.427 Posted: Mon Feb 18 21:17:37 1985 Date-Received: Mon, 18-Feb-85 22:28:26 EST References: <7982@brl-tgr.ARPA> <97@timeinc.UUCP> <440@down.FUN> <1166@sunybcs.UUCP> Reply-To: dave@lsuc.UUCP (David Sherman) Organization: Law Society of Upper Canada, Toronto Lines: 12 Summary: login can't exec a shell file on all systems In article <1166@sunybcs.UUCP> loverso@sunybcs.UUCP (John Robert LoVerso) writes: ||I've found that a shell (sh or csh) script thats somebody's login shell can't be ||stopped or broken out of w/o logging the person out. Therefore, the "window ||of vulnerability" is removed. Sorry, that won't work on v7 systems, where you can't execute a shell file with exec(2), which is what login uses (execlp, actually). Dave Sherman -- {utzoo pesnta nrcaero utcs}!lsuc!dave {allegra decvax ihnp4 linus}!utcsri!lsuc!dave