Vulnerability ID: HTB22412
Reference: http://www.htbridge.ch/advisory/sql_injection_vulnerability_in_modx_cms_and_application_framework.html 
Product: MODx CMS and Application Framework
Vendor: MODx 
Vulnerable Version: 1.0.3 and Probably Prior Versions
Vendor Notification: 28 May 2010 
Vulnerability Type: SQL Injection
Status: Not Fixed, Vendor Alerted, Awaiting Vendor Response
Risk level: Medium 
Credit: High-Tech Bridge SA (http://www.htbridge.ch/) 

Vulnerability Details:
The vulnerability exists due to failure in the "manager/index.php" script to properly sanitize user-supplied input in "a" variable. Attacker can alter queries to the application SQL database, execute arbitrary queries to the database, compromise the application, access or modify sensitive data, or exploit various vulnerabilities in the underlying SQL database.

Attacker can use browser to exploit this vulnerability. The following PoC is available:


http://host/manager/index.php?a=106%27+ANY_SQL_HERE 

You must also set the "Referer" HTTP header