naif <n...@globaleaks.org> added the comment:

We could also disable all the ciphers that use MD5 for authentication:

MD5 has been disabled for SSL use due to it's weakness by:

- Firefox (All mozilla products now refuse any MD5 ciphers)
https://www.thesslstore.com/blog/index.php/firefox-to-stop-supporting-md5-based-ssl/
- Duracon by Jacob Appelbaum (Tor Project)
https://github.com/ioerror/duraconf

"HIGH:!aNULL:!eNULL:!SSLv2:!MD5" would do the magic, so we update the default 
to a modern, yet compatible set of SSL ciphers supported.

I don't want in any case to break compatibilities, but by default a software, 
should not support vulnerable, weak ciphers and this seems a good compromise.

Then the last fine tuning would be have the right preferred orders of ciphers 
to always prefer ECDHE (if available).

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Python tracker <rep...@bugs.python.org>
<http://bugs.python.org/issue13636>
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