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SSCP Practice Question: A security analyst notices that a web application…
A security analyst notices that a web application is vulnerable to SQL injection. The application uses parameterized queries for most inputs but concatenates user input directly into a query for a legacy module. Which is the BEST immediate remediation?
⚠ Common exam trap
ISC2 often tests the misconception that a WAF or input validation is sufficient to prevent SQL injection, but the trap here is that only parameterized queries (or stored procedures with parameterized calls) eliminate the vulnerability at the code level, making them the best immediate remediation over compensating controls.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Rewrite the legacy module to use parameterized queries.
Parameterized queries (prepared statements) are the definitive defense against SQL injection, as they separate SQL logic from user data by design. Rewriting the legacy module to use parameterized queries eliminates the root cause of the vulnerability at the code level, ensuring that user input is never concatenated into the SQL statement. This is the most secure and permanent fix, as it directly addresses the injection point in the application layer.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Disable the legacy module until a full rewrite is completed.
Why it's wrong here
May cause business disruption; immediate fix is possible.
- ✓
Rewrite the legacy module to use parameterized queries.
Why this is correct
Parameterized queries prevent SQL injection by separating code from data.
- ✗
Deploy a web application firewall (WAF) to block SQL injection patterns.
Why it's wrong here
WAF can be bypassed and is not a permanent fix.
- ✗
Implement input validation to reject special characters.
Why it's wrong here
Input validation is not sufficient; it can be bypassed.
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JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This SSCP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the SSCP exam.