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Date: Wed, 17 Nov 2010 20:29:28 +1100
From: dave b <>
Subject: Re: CVE Request -- Mercurial --Doesn't verify subject
 Common Name properly

On 17 November 2010 19:40, Matthias Andree <> wrote:
> Am 16.11.2010 17:02, schrieb Marc Deslauriers:
>> Thanks for the clarification. Here are some more projects that need CVEs
>> for this issue:
>> libcloud:
>> Checkbox:
>> Bazaar:
> In the past, Charles Cazabon's getmail would have had to be added to the
> list, but he didn't care and pointed fingers at the Python library
> developers, and I'm not sure what the current shape of getmail 4 is, and
> don't care sufficiently to look it up.
> Getmail used to happily connect to sites that have expired certs, for
> instance.

This is already rather boring. Can we keep this about what has a
problem that people actually use and would be problematic (at risk) if
the software was subject to a man in the middled attack.

I don't know about getmail, but offlineimap also has 'this problem'.

Really 'the issue' is two fold:
1. there is software which *should* check that the ssl connection is
secure but don't even bother to do any kind of checking. (e.g.
2. then is software which attempts to do the checks that the
developers thought were sufficient but really were not enough (e.g.
bzr, mercurial)

If python blocks these problems in the ssl module and enforces the
checks(all of them *that* it should be doing) by default in the
various http (and other modules) then we can stop 'guessing' at what
may have a problem.
I would also like it if python did not have sslv2 enabled by default
in the ssl module methods. [0]
However, with openssl changing, this will also change afaik. [1]

I have created a new python issue at

[0] -
[1] -

Suspicion always haunts the guilty mind.		-- Wm. Shakespeare

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