Dark Reading is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

Risk

9/1/2009
02:39 PM
Connect Directly
Google+
Twitter
RSS
E-Mail
50%
50%

Researcher Launches Facebook Bug Project For September

Several of the most popular applications on the social network contain easy-to-exploit cross-site scripting (XSS) flaws

First Twitter and now Facebook: A researcher today began a round of daily disclosures of serious vulnerabilities in popular Facebook applications.

The researcher, who goes by "theharmonyguy," plans to disclose multiple cross-site scripting (XSS) flaws he discovered in various third-party Facebook applications this month, though he may not do so every day. He says he found major security holes in several of Facebook's top 10 most popular applications.

Today's bugs include XSSes in FunSpace, which has more than 8 million users; SuperPoke, which has 2 million users; SocialToo, which has nearly 2,000 users; and YellowPages.ca, which has nearly 1,200 users. FunSpace, SuperPoke, and SocialToo have been patched, but YellowPages.ca has not.

Theharmonyguy says Facebook's own applications tend to be secure, as does its site. He says he has studied several Facebook-written apps for the site, and it was tough to find any holes. "They seem to know what they're doing with security," he says. "I found a cross-site scripting hole on the Facebook page and contacted them, and they patched if really quickly," he says.

Even so, the researcher says Facebook doesn't vet third-party apps. "In fact, four of the five apps I'm going to post in the next week or so are Facebook-verified ones," he says.

Theharmonyguy plans to release source code for the attacks once he has completed the disclosures. He says he gives each application developer 24 hours notice before posting the flaws.

The problem, he says, lays in Facebook's API -- problem that has been well-documented by other researchers, as well. The API gives the application developer full access to a Facebook member's profile when a user runs that application.

"A lot of the security problems I and others are finding [on social networks] seem to come in through third-party apps," theharmonyguy says. "Once you start allowing this third-party content, you start opening yourself up to problems."

Theharmonyguy says XSS is simple to exploit in a Facebook application by inserting iFrames or scripts. And the XSS hole can then open the door to cross-site request forgery (CSRF) attacks, as well, he says.

There's no surefire way for Facebook users to protect themselves from these application-borne attacks, he says. "My No. 1 tip to users would be not to put anything on their profile that they don't want to be public. Treat your Facebook profile as if it's already public," he says. "And be careful what applications you install," even though Facebook-verified ones can also be abused, he says.

Have a comment on this story? Please click "Discuss" below. If you'd like to contact Dark Reading's editors directly, send us a message. Kelly Jackson Higgins is the Executive Editor of Dark Reading. She is an award-winning veteran technology and business journalist with more than two decades of experience in reporting and editing for various publications, including Network Computing, Secure Enterprise ... View Full Bio

Comment  | 
Print  | 
More Insights
Comments
Oldest First  |  Newest First  |  Threaded View
How Attackers Could Use Azure Apps to Sneak into Microsoft 365
Kelly Sheridan, Staff Editor, Dark Reading,  3/24/2020
Malicious USB Drive Hides Behind Gift Card Lure
Dark Reading Staff 3/27/2020
Register for Dark Reading Newsletters
White Papers
Video
Cartoon Contest
Write a Caption, Win a Starbucks Card! Click Here
Latest Comment: This comment is waiting for review by our moderators.
Current Issue
6 Emerging Cyber Threats That Enterprises Face in 2020
This Tech Digest gives an in-depth look at six emerging cyber threats that enterprises could face in 2020. Download your copy today!
Flash Poll
State of Cybersecurity Incident Response
State of Cybersecurity Incident Response
Data breaches and regulations have forced organizations to pay closer attention to the security incident response function. However, security leaders may be overestimating their ability to detect and respond to security incidents. Read this report to find out more.
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2020-10940
PUBLISHED: 2020-03-27
Local Privilege Escalation can occur in PHOENIX CONTACT PORTICO SERVER through 3.0.7 when installed to run as a service.
CVE-2020-10939
PUBLISHED: 2020-03-27
Insecure, default path permissions in PHOENIX CONTACT PC WORX SRT through 1.14 allow for local privilege escalation.
CVE-2020-6095
PUBLISHED: 2020-03-27
An exploitable denial of service vulnerability exists in the GstRTSPAuth functionality of GStreamer/gst-rtsp-server 1.14.5. A specially crafted RTSP setup request can cause a null pointer deference resulting in denial-of-service. An attacker can send a malicious packet to trigger this vulnerability.
CVE-2020-10817
PUBLISHED: 2020-03-27
The custom-searchable-data-entry-system (aka Custom Searchable Data Entry System) plugin through 1.7.1 for WordPress allows SQL Injection. NOTE: this product is discontinued.
CVE-2020-10952
PUBLISHED: 2020-03-27
GitLab EE/CE 8.11 through 12.9.1 allows blocked users to pull/push docker images.