From: Chris Wright <chrisw@osdl.org>
To: Makan Pourzandi <Makan.Pourzandi@ericsson.com>
Cc: Chris Wright <chrisw@osdl.org>,
linux-kernel@vger.kernel.org,
Axelle Apvrille <axelle.apvrille@trusted-logic.fr>,
serue@us.ibm.com, david.gordon@ericsson.com, gaspoucho@yahoo.com
Subject: Re: [ANNOUNCE] Release Digsig 1.3.1: kernel module for run-time authentication of binaries
Date: Thu, 9 Sep 2004 10:55:20 -0700 [thread overview]
Message-ID: <20040909105520.U1924@build.pdx.osdl.net> (raw)
In-Reply-To: <41409378.5060908@ericsson.com>; from Makan.Pourzandi@ericsson.com on Thu, Sep 09, 2004 at 01:31:36PM -0400
* Makan Pourzandi (Makan.Pourzandi@ericsson.com) wrote:
> Hi Chris,
>
> Chris Wright wrote:
> > * Makan Pourzandi (Makan.Pourzandi@ericsson.com) wrote:
> >>
> >>DSI development team would like to announce the release 1.3.1 of digsig.
> ...
> >>
> >>Changes from Digsig release 0.2 announced in this mailing list:
> >>================================================================
> >>
> >> - the verification of signatures for the shared binaries has been
> >> added.
> >> - added support for caching of signatures
> >> - added documentation for digsig
> >> - added support for revoked signatures
> >> - support to avoid vulnerability for rewrite of shared
> >> libraries
> >
> >
> > Could you elaborate on this one?
>
> We realized that when a shared library is opened by a binary it can
> still be modified. To solve the problem, we block the write access to
> the shared binary while it is loaded.
AFAICT, this means anybody with read access to a file can block all
writes. This doesn't sound great.
thanks,
-chris
--
Linux Security Modules http://lsm.immunix.org http://lsm.bkbits.net
next prev parent reply other threads:[~2004-09-09 18:00 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-09-09 15:55 Makan Pourzandi
2004-09-09 16:24 ` Chris Wright
2004-09-09 17:23 ` Serge E. Hallyn
2004-09-09 17:42 ` Chris Wright
2004-09-09 18:43 ` Serge E. Hallyn
2004-09-09 17:31 ` Makan Pourzandi
2004-09-09 17:55 ` Chris Wright [this message]
2004-09-09 19:05 ` Serge E. Hallyn
2004-09-09 20:40 ` Makan Pourzandi
2004-09-09 21:03 ` Chris Wright
2004-09-09 21:45 ` Serge E. Hallyn
2004-09-10 21:28 ` Chris Wright
2004-09-10 20:53 ` Makan Pourzandi
2004-09-10 21:26 ` Chris Wright
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