In the wake of the revelation that a major SSL certificate provider suffered a serious breach
, Chris Palmer from the Electronic Frontier Foundation has analysis of the common practice of issuing certificates for unqualified domain names, such as "mail" and "www" and "localhost" (an unqualified domain is one that consists of a single word, without a top- and second-level domain, e.g., "www" instead of "www.boingboing.net"). These unqualified names should never
be issued certificates, as doing so leaves anyone who makes a practice of using them within a company network vulnerable to man-in-the-middle attacks. Palmer found tens of thousands of these certificates, and sounds the alarm that if you're not using fully qualified domains for secure connections, you're very vulnerable.
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! Everything would look normal: your browser would use HTTPS, it would show a the lock icon that indicates HTTPS is working properly, it would show that a real CA validated the HTTPS certificate, and it would raise no security warnings. And yet, you would be giving your password and your email contents to the attacker.
Unqualified Names in the SSL Observatory
To test the prevalence of the validated, unqualified names problem, I queried the Observatory database for unqualified names similar to "exchange". (Microsoft Exchange is an extremely popular email server, and servers that run it commonly have "exchange" or "exch" in their names. Likely examples include "exchange.example.net" and "exch-01.example.com".) My results show that unqualified "exchange"-like names are the most popular type of name, overall, that CAs are happy to sign.
Martin Shkreli, the hedge-fund douche-bro who hiked the price of an off-patent drug used by AIDS and cancer patients from $13.50 to $750, then promised to lower the prices after becoming the Most Hated Man on the Internet did no such thing, because he is a liar.
A leaked recording made of a conference call posted by the Edison Electric Institute, which lobbies for the power industry, reveals lobbyists for high pollution companies talking about how they can exploit the Syrian refugee crisis to get a rider inserted into a pending bill that would kill the EPA’s Waters of the United States […]
Yesterday, Dell was advising customers not to try to uninstall the bogus root certificate it had snuck onto their Windows machine, which would allow attackers to undetectably impersonate their work intranets, bank sites, or Google mail. Today, they apologized and offered an uninstaller — even as we’ve learned that at least one SCADA controller was […]
These knitted gloves are here to save the day (and your hands) with an ultra-comfy, double-layer that will allow you to stay warm and use your phone. Now you can take photos on the fly, text, Tinder, and more without letting freezing temperatures get in your way. Plus they work with all touchscreens, so no […]
Store more on your Mac with this microSD memory card adapter.
Carrying this EDC card is like slinging around a handheld toolbox wherever you go. Its minimal design is small enough to fit in your wallet’s billfold, and it’s TSA-compliant so you’ll never leave it behind. It’s got hex wrenches, metric and imperial rulers, flathead and Phillip’s screwdrivers, and a bottle opener so that you’re ready […]