From:   Dominick Grift <dac.override@gmail.com>
To:     Russell Coker <russell@coker.com.au>
Cc:     "selinux-refpolicy\@vger.kernel.org" 
        <selinux-refpolicy@vger.kernel.org>
Subject: Re: nnp_transition
References: <6525171.sqPiMeOL83@liv>
Date:   Tue, 22 Jan 2019 09:11:40 +0100
In-Reply-To: <6525171.sqPiMeOL83@liv> (Russell Coker's message of "Tue, 22 Jan
        2019 09:47:04 +1100")
Message-ID: <87fttlyuv7.fsf@gmail.com>
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Russell Coker <russell@coker.com.au> writes:

> Getting close to a Debian release so I have to sort out the nnp_transition 
> rules.  How do I work out what's going on here?  Do I just assume that as 
> dpkg_t has generally less access than unconfined_t it's ok?  Is it worth 
> investigating why something in apt is setting NNP?

Not worth looking into if you ask me (this is just the tip of the mountain). You no longer have to worry about
type bounds if you enable the polcap (which i think is the default)

>
> type=PROCTITLE msg=audit(22/01/19 07:08:31.692:1104) : proctitle=/usr/bin/dpkg 
> --print-foreign-architectures 
> type=SYSCALL msg=audit(22/01/19 07:08:31.692:1104) : arch=x86_64 
> syscall=execve success=yes exit=0 a0=0x5611b27bd0e0 a1=0x5611b27c1590 
> a2=0x7fff0e8f51f0 a3=0x1 items=0 ppid=18604 pid=18605 auid=root uid=_apt 
> gid=nogroup euid=_apt suid=_apt fsuid=_apt egid=nogroup sgid=nogroup 
> fsgid=nogroup tty=pts2 ses=9 comm=dpkg exe=/usr/bin/dpkg 
> subj=unconfined_u:unconfined_r:dpkg_t:s0-s0:c0.c1023 key=(null) 
> type=AVC msg=audit(22/01/19 07:08:31.692:1104) : avc:  granted  { 
> nnp_transition } for  pid=18605 comm=apt-config 
> scontext=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 
> tcontext=unconfined_u:unconfined_r:dpkg_t:s0-s0:c0.c1023 tclass=process2

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Dominick Grift