Chipmunk Pwngame Multiple SQL Injection Vulnerabilities

Summary
This host is running Chipmunk Pwngame and is prone multiple SQL injection vulnerabilities.
Impact
Successful exploitation will allow remote attackers to access or modify data, or exploit latent vulnerabilities in the underlying database or bypass the log-in mechanism. 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
Input passed via the 'username' parameter to 'authenticate.php' and 'ID' parameter to 'pwn.php' is not properly sanitised before being used in an SQL query.
Affected
Chipmunk Pwngame version 1.0
References