What steps should penetration testers take after discovering a severe SQL injection vulnerability?

Here are the steps penetration testers should take after discovering a severe SQL injection vulnerability:

• Q1. What steps should the penetration testers take after discovering this vulnerability?

  1. Stop further exploitation: Immediately cease any actions that could further compromise the system or access additional sensitive data. The objective is to identify the vulnerability, not to cause harm or excessive data exposure.
  2. Document the vulnerability: Thoroughly record all details of the SQL injection, including the exact method of discovery, the specific input fields or parameters affected, the steps to reproduce the vulnerability, and the extent of unauthorized access achieved (e.g., access to customer accounts). Collect evidence such as screenshots or command outputs.
  3. Report immediately: Alert the client (the financial institution) about the critical vulnerability without delay. Due to the severity of SQL injection and potential for data breach, this communication should be prioritized.
  4. Provide remediation recommendations: Offer clear, actionable advice on how to fix the vulnerability. For SQL injection, this typically includes implementing parameterized queries or prepared statements, robust input validation, and using least privilege for database accounts.
  5. Include in the final report: Detail the vulnerability, its potential impact, and the recommended remediation steps in the comprehensive penetration test report.

• Q2. What steps should the penetration testers take after discovering this vulnerability? This question is identical to Q1. Please refer to the steps outlined above.