From: AARON HOWELL <a.howell@student.qut.edu.au>
To: blinux-list@redhat.com
Subject: Re: Screen capturing:
Date: Sat, 30 Nov 1996 23:58:04 +1000 (EST) [thread overview]
Message-ID: <Pine.OSF.3.93.961130235525.20745A-100000@sparrow.qut.edu.au> (raw)
In-Reply-To: <Pine.LNX.3.95.961130090634.3141A-100000@amasis.trin.cam.ac.uk>
On Sat, 30 Nov 1996, Nikhil Nair wrote:
[]
> I didn't know about setterm until just now, but remember that, unless the
> last octal digit of your umask is 7 (which it wouldn't normally be), using
> this is a potential security hole, as other users could read the contents
> of the console through the contents of that file. Use that with care!
Err. Yes. that's why ioctl(dump) Which is the kernel function which is
used to get the info off the console is only available to processes
running as root. Naturally, the normal cautions with doing anything as
root apply to this as well.
Aaron
-----------------------------------------------------------------------------
Aaron Howell. Q.U.T Equity Department, Technical Support/Training.
work: a.howell@qut.edu.au Linux/Networking Support.
home: a.howell@student.qut.edu.au phone +61-19-956-467
www: http://www.cnl.com.au/~aaron irc: DaRkAnGeL
Take an active stand against the NTEU wage claim.
Let them know loud and clear that blackmail will not be tollerated.
Defend the rights of students to fair and reasonable delivery of marks,
after all, we work too.
next prev parent reply other threads:[~ UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
Luke Davis
` Nikhil Nair
` AARON HOWELL [this message]
` site report William Loughborough
` Screen capturing: Jim Van Zandt
` Peter Nilsson
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