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Date: Wed, 11 Mar 2015 10:28:03 -0600
From: Kurt Seifried <>
Subject: Re: Another Python app (rhn-setup: rhnreg_ks) not
 checking hostnames in certs properly CVE-2015-1777

On 03/11/2015 10:18 AM, John Haxby wrote:
> I think there's a misunderstanding here.  I was asking for cooperation
> to come up with a solution, participating with other people who, like,
> I assumed, Red Hat, have an interest in solving this specific problem
> without breaking existing (admitedly flawed) applications.  I know it's
>  not straightforward, if it was I'd've just produced a patch.  I'm still
> happy to work with anyone to sort this out.

Me too. But I trust Nick and he's smart. I don't stick my finger into
every security pie because 1) I'm not an expert in all things and 2) I
have a finite life span and need to sleep.

So again my advice is: work with upstream/the community. You don't need
my input yet. Nick has spent far, far, far more time thinking about how
to fix Python/SSL/TLS then I ever will. Once you have a definitive
solution that you are pretty sure works, then please, by all means poke me.

> [snip]
>> I am actually working on something that will hopefully provide a
>> better solution (for values of speed and ease of fixing flaws) than
>> a traditional audit/code fix, (I'd rather address entire classes
>> of security flaw rather than one instance of the flaw at a time).
>> But like all things security infinite workload delays specific
>> projects.
> If this fixes the specific problem as a side effect that would be
> great.  Details are lacking though, and there's no obvious link here
> to making adapting PEP-466 for backwards compatibility (and I have
> absolutely no arguments with the rejected solutions for Python).

This is a different project and related to web interfaces (which are a
growing pain point security wise).

> This is my last message on the list on the subject.
> jch

Kurt Seifried -- Red Hat -- Product Security -- Cloud
PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993

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