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Message-ID: <20150323214101.GA23630@suse.de>
Date: Mon, 23 Mar 2015 22:41:01 +0100
From: Marcus Meissner <meissner@...e.de>
To: oss-security@...ts.openwall.com
Subject: Re: CVE for Kali Linux
On Tue, Mar 24, 2015 at 12:13:06AM +0300, Alexander Cherepanov wrote:
> On 2015-03-23 13:38, Marcus Meissner wrote:
> >>There are some attacks even if you verify signatures, e.g. serving
> >>old, known-vulnerable versions. HTTPS can help here (until
> >>signatures start to be widely accompanied by expiring timestamps or
> >>something).
> >
> >SUSE has added an expiry tag in the YUM metadata for such cases.
>
> It's nice to see progress in this area. Does SUSE guard against
> other attacks from [1] too?
>
> [1] https://isis.poly.edu/~jcappos/papers/cappos_pmsec_tr08-02.pdf
Our statements from 2008 (7 years ago) still stand and our package
manager does the full repository signing since 2006 already.
https://lizards.opensuse.org/2008/07/16/package-management-security-on-opensuse/
"Endless Data Attack" is open, as it is hard to solve for openSUSE with
its public mirror system.
The expiry was something added a bit later after the paper to address
the downgrade and replay attacks.
Ciao, Marcus
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