Clicknet CMS 'index.php' Directory Traversal Vulnerability

Summary
This host has Clicknet CMS installed and is prone to Directory Traversal vulnerability.
Impact
Successful attacks will allow attackers to read arbitrary files via a '..' (dot dot) sequences. Impact level: Application
Solution
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
Insight
The flaw is due to error in 'side' parameter in index.php which is not adequately sanitised that may lead to directory traversal attacks.
Affected
Clicknet CMS version 2.1 and prior.
References