Toshio Kuratomi wrote: > The Mediawiki auth plugin has to contact admin.fedoraproject.org in > order to lookup the users and verify their passwords. It's using curl > to do so. One of the options being given to curl is the following: > > # This is only required because of the wildcard cert on pt10 > curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE); > > That turns off verifying the host via SSL. From the comment it appears > to only be needed with the test FAS server. I'd like to comment this > line out. > > This is a flaw that potentially opens us to a DNS spoofing attack to > compromise authentication. Luckily for us, there is a problem with > routing to admin.fedoraproject.org within PHX so we have an /etc/hosts > entry for admin.fp.o that directs the wiki to use an internal IP > address. That means for this flaw to affect us, someone would have to > compromise the /etc/hosts files rather than a DNS server. So we should > fix this but compromising it is not as easy. > > If this fails, we will see authentication failures when we try to login > to the wiki and can revert. > After looking at this a little more with G, there's two settings to toggle: CURLOPT_SSL_VERIFYPEER CURLOPT_SSL_VERIFYHOST They're both set to off right now and I'd like to turn them both back on. Tested with a small php script that turning them on doesn't interfere with retrieving data. > Can I get a couple +1's? -Toshio
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