[Cycode] Fix for SAST detections - Unsanitized external input in SQL query

[cycode-security]

[Cycode] Fix for SAST detections - Unsanitized external input in SQL query

Code explainer

The vulnerability in this code is an SQL injection risk caused by directly concatenating unsanitized user input (name and auth_tan parameters) into SQL queries. This occurs on line 62 where the query string is constructed by directly embedding the parameters: "SELECT * FROM employees WHERE last_name = '" + name + "' AND auth_tan = '" + auth_tan + "'". This allows attackers to manipulate the SQL query structure by injecting malicious SQL code through these parameters, potentially accessing unauthorized data or performing destructive operations.

The fix replaces direct string concatenation with parameterized queries using PreparedStatement. This approach ensures that user input is treated as data rather than executable SQL code. The PreparedStatement automatically handles proper escaping and quoting of parameters, preventing SQL injection attacks. The same security principle is applied to the logging function to maintain consistent security practices throughout the codebase.

Remediation Instructions

1. Replace the vulnerable string concatenation with a parameterized query using PreparedStatement
2. Create a PreparedStatement with placeholders (?) for the parameters
3. Use the PreparedStatement's setString() method to safely bind the parameters
4. Execute the parameterized query instead of the concatenated string
5. Apply the same fix to the log() method which also uses string concatenation for SQL queries