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Date:      Fri, 26 Apr 1996 08:44:53 -0500 (CDT)
From:      Guy Helmer <ghelmer@alpha.dsu.edu>
To:        security@freebsd.org
Subject:   ptrace vulnerability, was: Something fishy with our PT_ATTACH code!
Message-ID:  <Pine.OSF.3.93.960426083930.839B-100000@alpha.dsu.edu>
In-Reply-To: <29493.830512651@time.cdrom.com>

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On Fri, 26 Apr 1996, Jordan K. Hubbard wrote:

> Just got back from Kirk's usual Thursday-night OS class and while we
> were going through exit1(), I noticed something that looked a little
> odd in the ptrace "reattach" code.  In following it (and it later
> turned out to be correct), I happened to notice the following weird
> behavior with attach and detach: [...]

That reminds me, did BSDI release any information/patches regarding the
ptrace vulnerabilitiy (CERT VB-96.04.bsdi)?  I assume the 4.4BSD-derived
systems had the same ptrace code...

Guy Helmer, Dakota State University Computing Services - ghelmer@alpha.dsu.edu




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