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Date:      Sat, 8 Jun 1996 11:32:35 +0400 (MSD)
From:      =?KOI8-R?Q?=E1=CE=C4=D2=C5=CA_=FE=C5=D2=CE=CF=D7?= (aka Andrey A. Chernov, Black Mage) <ache@astral.msk.su>
To:        pantzer@ludd.luth.se (Mattias Pantzare)
Cc:        pst@shockwave.com, security@FreeBSD.org
Subject:   Re: FreeBSD's /var/mail permissions
Message-ID:  <199606080732.LAA00950@astral.msk.su>
In-Reply-To: <Pine.SUN.3.91.960607232129.10242A-100000@father.ludd.luth.se> from "Mattias Pantzare" at "Jun 7, 96 11:22:54 pm"

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> > I'm confused, why do you say adduser must create new user mailbox?
> > Mail.local is already suid root and adduser should deliver a preformatted
> > mail message with mail.local.
> 
> Why should adduser send any mail to anybody? Rather silly if you ask me.

Because bad guy can pre-create upcoming user mailbox with 666 permissions.

-- 
Andrey A. Chernov        : And I rest so composedly,  /Now, in my bed,
ache@astral.msk.su       : That any beholder  /Might fancy me dead -
http://dt.demos.su/~ache : Might start at beholding me,  /Thinking me dead.
RELCOM Team,FreeBSD Team :         E.A.Poe         From "For Annie" 1849



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