A partial user-mode tty security fix for SunOS, Ultrix, et al.

Jussi Eloranta eloranta at jyu.fi
Mon Jun 17 00:53:20 AEST 1991


In article <9657.Jun1316.43.1691 at kramden.acf.nyu.edu> brnstnd at kramden.acf.nyu.edu (Dan Bernstein) writes:
>In the referenced article, Jussi Eloranta presents a patch to telnetd
>meant to stop tty problems under SunOS 4.1.1. Unfortunately, the patch
>doesn't accomplish any more than Sun's patch as announced a while back
>by CERT. Neither patch stops my SunOS 4.1.1 test code, and I don't think
>it's safe to believe that either patch will stop the Dutch hackers for
>long.
>

True. My code expected that the snoop program had the pty as its controlling
terminal but this doesn't need to be true. So not a good patch...

jussi
-- 
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Jussi Eloranta               Internet(/Bitnet):    ! The ultimate trip is
University of Jyvaskyla,     eloranta at tukki.jyu.fi !    death.
Finland                      [128.214.7.5]         !  -- Jim Morrison



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