From owner-freebsd-security  Mon Jan 20 14:56:26 2003
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Date: Mon, 20 Jan 2003 14:56:09 -0800
From: David Schultz <dschultz@uclink.Berkeley.EDU>
To: zhuravlev alexander <zaa@ulstu.ru>
Cc: Oleg Shevtsov <sat@orion.interexc.com>, security@FreeBSD.ORG
Subject: Re: your mail
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Mail-Followup-To: zhuravlev alexander <zaa@ulstu.ru>,
	Oleg Shevtsov <sat@orion.interexc.com>, security@FreeBSD.ORG
References: <20030120101323.GA371@interexc.com> <20030120102235.GA45357@hp.ulstu.ru>
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Thus spake zhuravlev alexander <zaa@ulstu.ru>:
> On Mon, Jan 20, 2003 at 12:13:23PM +0200, Oleg Shevtsov wrote:
> > 
> > Hi,
> > how to give specific user FTP but no shell access?
> > Ftpd's manual says:
> >            4.   The user must have a standard shell returned by
> >                 getusershell(3).
> > But I don't want to give shell account.
> 
> 	/sbin/nologin ? 

If you do it this way, you need to ensure that either the
``FTP-only'' users do not have home directories or that
/sbin/nologin is statically linked (the default).  Otherwise, it
is possible to exploit a bug (ahem, feature) in OpenSSH to gain
shell access on your box.

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