From: Alexander Wuerstlein <snalwuer@cip.informatik.uni-erlangen.de>
To: Arjan van de Ven <arjan@infradead.org>
Cc: Alexander Wuerstlein <arw@arw.name>,
linux-kernel@vger.kernel.org,
Johannes Schlumberger <spjsschl@stud.informatik.uni-erlangen.de>
Subject: Re: [PATCH] Check files' signatures before doing suid/sgid [2/4]
Date: Thu, 21 Jun 2007 19:25:57 +0200 [thread overview]
Message-ID: <20070621172557.GE9741@cip.informatik.uni-erlangen.de> (raw)
In-Reply-To: <1182446251.2704.0.camel@laptopd505.fenrus.org>
On 070621 19:21, Arjan van de Ven <arjan@infradead.org> wrote:
> On Thu, 2007-06-21 at 18:02 +0200, Alexander Wuerstlein wrote:
> > Modified task_struct to hold a 'signed flag' which is set on exec(), inherited
> > on fork() and checked during exec before giving the new process suid/sgid
> > privileges.
> >
>
>
>
> do you also check the signature of glibc and every other shared library
> that the app uses (or dlopens)? if not.. the entire exercise is rather
> pointless...
We do check that, that is patch [3/4].
Of course we can only check mmap-ed files, if there is no file like with JIT
compilers we are out of luck.
Ciao,
Alexander Wuerstlein.
next prev parent reply other threads:[~2007-06-21 17:26 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-21 16:02 Alexander Wuerstlein
2007-06-21 17:17 ` Arjan van de Ven
2007-06-21 17:25 ` Alexander Wuerstlein [this message]
2007-06-21 17:29 ` Arjan van de Ven
2007-06-21 17:46 ` Alexander Wuerstlein
2007-06-21 18:49 ` Arjan van de Ven
2007-06-21 21:40 ` Johannes Schlumberger
2007-06-23 18:01 ` Jan Engelhardt
2007-06-25 10:54 ` Johannes Schlumberger
-- strict thread matches above, loose matches on Subject: below --
2007-06-21 15:55 [PATCH] signed binaries support [0/4] Johannes Schlumberger
2007-06-22 18:25 ` [PATCH] Check files' signatures before doing suid/sgid [2/4] Alexander Wuerstlein
2007-06-22 19:36 ` Satyam Sharma
2007-06-24 22:58 ` Alexander Wuerstlein
2007-06-25 23:53 ` Satyam Sharma
2007-06-26 0:27 ` Alexander Wuerstlein
2007-06-26 2:13 ` Satyam Sharma
2007-06-23 17:54 ` Jan Engelhardt
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