Critical Login XSS+CSRF Revolution and Prior

By Jay Gilmore
July 15, 2014
Critical Login XSS+CSRF Revolution and Prior

Product: MODX Revolution
Severity: Critical
Versions: 2.0.0–2.2.14
Vulnerability type: CSRF & XSS
Report date: 2014-Jul-10
Fixed date: 2014-Jul-15

A significant vulnerability was discovered in the Manager login of MODX Revolution that also affects the use of the Login Extra. A malicious user could formulate a link that automatically logs the user into their own account, then redirects the user to a site the attacker controls immediately, exposing the user's CSRF token. This can be exploited with or without getting the user to enter their credentials in the form.

Affected Releases
All MODX Revolution releases prior to and including 2.2.14.

Upgrade to MODX Revolution 2.2.15. Due to the nature of this issue and the number of files requiring changes the solution is to upgrade. No installable patch or fileset is available for prior versions.

We would like to thank Narendra Bhati, of Suma Soft for bringing this issue to our attention.

Additional Information
For additional information, please use the MODX Contact Form.