Risk
2/8/2013
04:49 PM
Connect Directly
LinkedIn
Twitter
Google+
RSS
E-Mail
50%
50%

Facebook Login Bug: Lessons Learned

Service interruption at dozens of prominent websites including CNN and Hulu reminds that third-party code integration carries risks.

Facebook's 2012 Highs And Lows
Facebook's 2012 Highs And Lows
(click image for larger view and for slideshow)
Several dozen high-profile websites that allow users to login with Facebook credentials became inaccessible for a short period on Thursday afternoon as a result of a bug in Facebook's code.

Around 4 p.m. Pacific Time, the websites operated by at least 35 companies, including ABC, CNN, Gawker, Hulu, Pinterest, Reddit and Yahoo, began redirecting online visitors to a Facebook error page.

Facebook has acknowledged the problem and says that everything is working again. "For a short period of time, there was a bug that redirected people from third party sites with Facebook Login to Facebook.com," a company spokeswoman said in an email. "The issue was quickly resolved."

Asked about how the bug was introduced and whether the company has taken steps to prevent the issue from recurring, Facebook did not respond.

[ Struggling to connect with customers? Read 5 Social Best Practices From Cisco. ]

Facebook Login, previously referred to as Facebook Connect, is an API that allows developers to provide website visitors and mobile app users with the ability to log in to websites and apps using their Facebook credentials. It relies on a protocol called OAuth 2.0 for authentication and authorization and is implemented in JavaScript for Web applications or via platform-specific SDKs.

Hundreds of millions of people log in to third-party websites every month using Facebook Login. The last time anyone from Facebook provided Login usage statistics appears to be in December 2010, when the figure was 250 million people per month. As of March 2012, nine million websites and apps had integrated Facebook Login, according to the company.

But relying on third-party services such as Facebook Login or Google Analytics presents a risk. Ashkan Soltani, an independent security researcher who previously served as staff technologist at the Federal Trade Commission, warns that too few people appreciate the implications of relying on third-party code.

"The browser model allows execution of code from a variety of different sources," explained Soltani in a phone interview. "When you visit a website like CNN's and they embed a third-party service like Facebook Login, you're effectively executing code served by this third party when you visit the website. That has some interesting security implications."

Previous
1 of 2
Next
Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
lgarey@techweb.com
50%
50%
lgarey@techweb.com,
User Rank: Apprentice
2/11/2013 | 4:04:36 PM
re: Facebook Login Bug: Lessons Learned
The Mad Libs example is excellent. Is there any indication that this was not just a bug but a hack? Lorna Garey, IW Reports
Register for Dark Reading Newsletters
Partner Perspectives
What's This?
In a digital world inundated with advanced security threats, Intel Security seeks to transform how we live and work to keep our information secure. Through hardware and software development, Intel Security delivers robust solutions that integrate security into every layer of every digital device. In combining the security expertise of McAfee with the innovation, performance, and trust of Intel, this vision becomes a reality.

As we rely on technology to enhance our everyday and business life, we must too consider the security of the intellectual property and confidential data that is housed on these devices. As we increase the number of devices we use, we increase the number of gateways and opportunity for security threats. Intel Security takes the “security connected” approach to ensure that every device is secure, and that all security solutions are seamlessly integrated.
Featured Writers
White Papers
Cartoon
Current Issue
Dark Reading's October Tech Digest
Fast data analysis can stymie attacks and strengthen enterprise security. Does your team have the data smarts?
Flash Poll
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2012-2413
Published: 2014-10-20
Cross-site scripting (XSS) vulnerability in the ja_purity template for Joomla! 1.5.26 and earlier allows remote attackers to inject arbitrary web script or HTML via the Mod* cookie parameter to html/modules.php.

CVE-2012-5244
Published: 2014-10-20
Multiple SQL injection vulnerabilities in Banana Dance B.2.6 and earlier allow remote attackers to execute arbitrary SQL commands via the (1) return, (2) display, (3) table, or (4) search parameter to functions/suggest.php; (5) the id parameter to functions/widgets.php, (6) the category parameter to...

CVE-2012-5694
Published: 2014-10-20
Multiple SQL injection vulnerabilities in Bulb Security Smartphone Pentest Framework (SPF) before 0.1.3 allow remote attackers to execute arbitrary SQL commands via the (1) agentPhNo, (2) controlPhNo, (3) agentURLPath, (4) agentControlKey, or (5) platformDD1 parameter to frameworkgui/attach2Agents.p...

CVE-2012-5695
Published: 2014-10-20
Multiple cross-site request forgery (CSRF) vulnerabilities in Bulb Security Smartphone Pentest Framework (SPF) 0.1.2 through 0.1.4 allow remote attackers to hijack the authentication of administrators for requests that conduct (1) shell metacharacter or (2) SQL injection attacks or (3) send an SMS m...

CVE-2012-5696
Published: 2014-10-20
Bulb Security Smartphone Pentest Framework (SPF) before 0.1.3 does not properly restrict access to frameworkgui/config, which allows remote attackers to obtain the plaintext database password via a direct request.

Best of the Web
Dark Reading Radio
Archived Dark Reading Radio
Follow Dark Reading editors into the field as they talk with noted experts from the security world.