from the oh-that'll-be-fine-i'm-sure dept.
Trailrunner7 writes "The recent attack on Comodo and several of its associated registration authorities has spurred quite a bit of re-examination of the way that the Web's certificate authority infrastructure works--or doesn't. One interesting result of this work is that the folks at the Electronic Frontier Foundation have discovered that there are more than 37,000 legitimate certificates issued by CAs for unqualified names such as 'localhost,' or 'Exchange,' a practice that could simplify some forms of man-in-the-middle attacks. 'Although signing "localhost" is humorous, CAs create real risk when they sign other unqualified names. What if an attacker were able to receive a CA-signed certificate for names like "mail" or "webmail?"' Such an attacker would be able to perfectly forge the identity of your organization's webmail server in a "man-in-the-middle" attack!'"
The most difficult thing in the world is to know how to do a thing and to
watch someone else doing it wrong, without commenting.
-- T.H. White