linux-kernel - Re: [PATCH 2/3] Security: Implement disablenetwork semantics. (v4)

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Message-Id: <201001111007.EAG82373.VHFQSLFOFMOOJt@I-love.SAKURA.ne.jp>
Date:	Mon, 11 Jan 2010 10:07:53 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	michael@...top.org
Cc:	pavel@....cz, linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-security-module@...r.kernel.org, andi@...stfloor.org,
	david@...g.hm, socketcan@...tkopp.net, alan@...rguk.ukuu.org.uk,
	herbert@...dor.apana.org.au, Valdis.Kletnieks@...edu,
	bdonlan@...il.com, zbr@...emap.net, cscott@...ott.net,
	jmorris@...ei.org, ebiederm@...ssion.com, bernie@...ewiz.org,
	mrs@...hic-beasts.com, randy.dunlap@...cle.com,
	xiyou.wangcong@...il.com, penguin-kernel@...ove.sakura.ne.jp,
	sam@...ack.fr, casey@...aufler-ca.com, serue@...ibm.com,
	viro@...IV.linux.org.uk
Subject: Re: [PATCH 2/3] Security: Implement disablenetwork semantics. (v4)

Michael Stone wrote:
> Examples of software that I want to be able to gain privileges normally include:
> 
>    rainbow, which requires privilege in order to add new accounts to the system
>    and in order to call setuid() but which does not require networking
>    privileges.

If the system is not using local files (i.e. /etc/passwd and /etc/shadow),
the process who wants to add new accounts to the system might need network
access (e.g. to LDAP server), doesn't it?
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