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Date: Mon, 18 Jan 2010 07:56:47 -0800
Message-ID: <551280e51001180756q2a438d3cv99bbb4e87eb073f4@mail.gmail.com>
Subject: Re: [PATCH 2/3] Security: Implement disablenetwork semantics. (v4)
From: "Andrew G. Morgan" <morgan@kernel.org>
To: Valdis.Kletnieks@vt.edu
Cc: Pavel Machek <pavel@ucw.cz>, Michael Stone <michael@laptop.org>,
       James Morris <jmorris@namei.org>, linux-kernel@vger.kernel.org,
       netdev@vger.kernel.org, linux-security-module@vger.kernel.org,
       Andi Kleen <andi@firstfloor.org>, David Lang <david@lang.hm>,
       Oliver Hartkopp <socketcan@hartkopp.net>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>,
       Herbert Xu <herbert@gondor.apana.org.au>,
       Bryan Donlan <bdonlan@gmail.com>, Evgeniy Polyakov <zbr@ioremap.net>,
       "C. Scott Ananian" <cscott@cscott.net>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
       Bernie Innocenti <bernie@codewiz.org>,
       Mark Seaborn <mrs@mythic-beasts.com>,
       Randy Dunlap <randy.dunlap@oracle.com>,
       "Am?rico Wang" <xiyou.wangcong@gmail.com>,
       Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>,
       Samir Bellabes <sam@synack.fr>,
       Casey Schaufler <casey@schaufler-ca.com>,
       "Serge E. Hallyn" <serue@us.ibm.com>, Al Viro <viro@zeniv.linux.org.uk>
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On Mon, Jan 18, 2010 at 4:54 AM,  <Valdis.Kletnieks@vt.edu> wrote:
> (Interestingly enough, the capabilities bug came *later*:
>
> 8.12.1/8.12.1 ? 2001/10/01
> ? ? ? ?SECURITY: Check whether dropping group privileges actually succeeded
> ? ? ? ? ? ? ? ?to avoid possible compromises of the mail system by
> ? ? ? ? ? ? ? ?supplying bogus data. ?Add configuration options for
> ? ? ? ? ? ? ? ?different set*gid() calls to reset saved gid. ?Problem
> ? ? ? ? ? ? ? ?found by Michal Zalewski.
>
> and was mostly an issue because the same problem existed in pre-8.12 sendmails
> that were still setuid and hadn't upgraded yet...
>
>

I think the above was 'a' sendmail bug. 'The' capabilities bug came before that:

http://userweb.kernel.org/~morgan/sendmail-capabilities-war-story.html

Cheers

Andrew
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