Zero-Day Advisory

Fortinet Discovers WordPress Photo Gallery Plugin Cross-Site Scripting Vulnerability

Summary

Fortinet's FortiGuard Labs has discovered a Cross-Site Scripting (XSS) vulnerability in WordPress Photo Gallery Plugin.
Photo Gallery is an advanced Plugin with a list of tools and options for adding and editing images for different views. There are more than 100,000 installs worldwide.
The vulnerability is due to insufficiently sanitizing user-supplied inputs. A remote attacker may be able to exploit this to inject malicious script code into the web pages generated by Photo Gallery Plugin. When victims view these crafted web pages via web browser, the injected script code will be automatically executed on behalf of the victims.

Solutions

FortiGuard Labs released the following FortiGate IPS signature which covers this specific vulnerability:

WordPress.Photo.Gallery.Plugin.FileManager.XSS
Released Mar 13, 2015
Users should apply the solution provided by Wordpress.

Additional Information

This is a persistent Cross-Site Scripting vulnerability. Any WordPress users having 'edit' permission can exploit it to inject arbitrary script code.

References

Acknowledgement

This vulnerability was discovered by Zhouyuan Yang of Fortinet's FortiGuard Labs.

IPS Subscription

Fortinet customers who subscribe to Fortinet's intrusion prevention (IPS) service should be protected against this vulnerability with the appropriate configuration parameters in place. Fortinet's IPS service is one component of FortiGuard Subscription Services, which also offer comprehensive solutions such as antivirus, Web content filtering and antispam capabilities. These services enable protection against threats on both application and network layers. FortiGuard Services are continuously updated by FortiGuard Labs, which enables Fortinet to deliver a combination of multi-layered security intelligence and true zero-day protection from new and emerging threats. These updates are delivered to all FortiGate, FortiMail and FortiClient products. Fortinet strictly follows responsible disclosure guidelines to ensure optimum protection during a threat's lifecycle.