A vulnerability in _dnsname_to_pat() in ssl_match_hostname.py allows attackers to cause a Denial of Service by submitting a certificate name that contains many asterisk '*' characters.

Pymongo embeds a copy of such file.
More details below:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=709487
http://bugs.python.org/issue17980
https://bugzilla.redhat.com/show_bug.cgi?id=963186

Thanks!