Re: Information disclosure?
From: Dean Strik (dean_at_stack.nl)
Date: 04/22/05
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- In reply to: Jesper Wallin: "Information disclosure?"
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Date: Fri, 22 Apr 2005 12:20:24 +0200 To: Jesper Wallin <jesper@hackunite.net>
Jesper Wallin wrote:
> For some reason, I thought little about the "clear" command today..
> Let's say a privileged user (root) logs on, edit a sensitive file (e.g,
> a file containing a password, running vipw, etc) .. then runs clear and
> logout. Then anyone can press the scroll-lock command, scroll back up
> and read the sensitive information.. Isn't "clear" ment to clear the
> backbuffer instead of printing a full screen of returns? If it does, I'm
> not sure how that would effect a user running "clear" on a pty (telnet,
> sshd, screen, etc) ..
vidcontrol -C ; clear
-- Dean C. Strik Eindhoven University of Technology dean@stack.nl | dean@ipnet6.org | http://www.ipnet6.org/ "This isn't right. This isn't even wrong." -- Wolfgang Pauli _______________________________________________ freebsd-security@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-security To unsubscribe, send any mail to "freebsd-security-unsubscribe@freebsd.org"
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