::Trend Micro Threat Resource Center::

12 June 2010

114,000 IPad 3G Owners' Email Addresses Exposed By AT&T

A group called Goatse Security was able to grab 114,067 personal email addresses of iPad buyers from AT&T's website.

Some of the Email addreses leaked include White House Chief of Staff Rahm Emanuel, New York City Mayer Michael Bloomberg, Diane Sawyer of ABC News, and many CEOs, CFO, and CTO's. A number of the email addresses exposed were even those of DARPA reesarchers and high-ranking military officials.

Each iPad comes with an ICC-ID or an "integrated circuit card identifier." The subscriber's SIM card and ICC-ID are linked to uniquely identify them. Normally this data would not be publicly accessible.

AT&T goofed big time and left a script on their website that allowed anyone to query it. If an ICC-ID was provided to the script, it responded with a the subscriber's email address. This script was intended to be used with AJAX apps, but obviously had no protections built in.

This lack of security allowed researchers to write a simple PHP script that used the iPad browser agent string to grab potentially millions of addresses. This would not have been possible with out all the pictures of iPad's online that helped them to guess the ICC-IDs. Like any exploit group that wants fame, these guys shared the script and corresponding info with many others like them before reporting the gaping security hole to AT&T.

So now Steve Jobs has a bit of a problem. Hundreds of thousands of customer's and potentially millions of email address have been made available to groups that could use them for malicious purposes. Not only that, but the iPad 3G looks rather unappealing now even if it was not Apple that was responsible for the breach.

If you bought an iPad 3G and have an email address that doesn't reveal your identity and a strong password for it, you might be safe. However, now is as good a time as any to change your email password to something stronger. Also, if your email is firstname.lastname@mysite.com or something similar, just be very cautious about who you open PDF's from and the links you click in emails. Its easier than you might think for criminals to target a victim with a specially crafted convincing email that appears to be from co-workers or friends.

References: http://security.goatse.fr/