bugtraq - Re: GNU screen buffer overflow

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Message-ID: <Pine.LNX.4.44.0312011647170.9411-100000@tribal.metalab.unc.edu>
Date: Mon, 1 Dec 2003 16:48:38 -0500 (EST)
From: Kyle Sallee <cromwell@...alab.unc.edu>
To: Mariusz Woloszyn <emsi@...rtners.pl>
Cc: Timo Sirainen <tss@....fi>, <bugtraq@...urityfocus.com>
Subject: Re: GNU screen buffer overflow


On Mon, 1 Dec 2003, Mariusz Woloszyn wrote:

> On Thu, 27 Nov 2003, Timo Sirainen wrote:
> 
> > Buffer overflow in GNU screen allows privilege escalation for local users.
> > Usually screen is installed either setgid-utmp or setuid-root.
> >
> With devpts and libutempter it is possible to install fully functional
> screen without suid/sgid.

Does that mean any program that links with libutempter gains
complete suid/sgid root functionality, or only when executing 
the functions in the libutempter library, please?