Re: OpenID/Debian PRNG/DNS Cache poisoning advisory

From: Eric Rescorla <ekr@networkresonance.com>
To: Ben Laurie <benl@google.com>
Cc: bugtraq@securityfocus.com,security@openid.net,OpenID List <general@openid.net>,cryptography@metzdowd.com,full-disclosure@lists.grok.org.uk
Subject: Re: OpenID/Debian PRNG/DNS Cache poisoning advisory
Date:


At Fri, 8 Aug 2008 11:50:59 +0100,
Ben Laurie wrote:
> However, since the CRLs will almost certainly not be checked, this
> means the site will still be vulnerable to attack for the lifetime of
> the certificate (and perhaps beyond, depending on user
> behaviour). Note that shutting down the site DOES NOT prevent the
> attack.
> 
> Therefore mitigation falls to other parties.
> 
> 1. Browsers must check CRLs by default.

Isn't this a good argument for blacklisting the keys on the client
side?

-Ekr





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