Assignment: Input Validation and Business Logic Security Controls
Overview:
This homework will demonstrate your knowledge of testing security controls aligned with Input validation and business logic. You will also use the recommended OWASP testing guide reporting format to report your test findings.
Task
Using the readings as a baseline, analyze, test and document the results for the tutoring web application found on the SDEV virtual machine. Use both manual means and automated tools (e.g., ZAP). The latter will enable you to discover more information than a cursory manual examination. Specific tests to be conducted include:
1. Testing for Reflected Cross site scripting (OTG-INPVAL-001)
- What is the importance of testing for this vulnerability?
- How many occurrences of the vulnerability did an automated scan discover?
- What is your recommendation to address any issues?
- Can you place a simple JavaScript alert (e.g., DeleteSession.php as an example)?
2. Testing for Stored Cross site scripting (OTG-INPVAL-002)
- What is the importance of testing for this vulnerability?
- What happens when you attempt to add a pop-up window (e.g., ) to the email input field within the "index.html" field?
- Can you introduce Stored Cross site scripting?
3. Testing for SQL Injection (OTG-INPVAL-005)
- Did your manual and automated testing discover any SQL Injection vulnerabilities - if so, how many? (Note: There should be at least one occurrence).
- Name two or more steps you can take according to the reading to resolve the issue.
- Fix and test at least one occurrence of the vulnerabilities - displaying your resulting source code and output results.
4. Testing for Code Injection (OTG-INPVAL-012)
- What is the importance of testing for this vulnerability?
- What are at least two measures you can take to remediate this issue?
- Can you input some simple html code or exploit Remote File Inclusion (RFI)?
5. Test business logic data validation (OTG-BUSLOGIC-001)
- What are at least two examples of business logic errors? This could be from various input forms or areas you discovered in previous HW assignments.
- How can you mitigate against such errors?
6. Test integrity checks (OTG-BUSLOGIC-003)
- Do Drop down menus exist and are they sufficient for the application? Why does the use of drop-down menus help mitigate against this risk?
- Does your manual or automated scan reveal the use of password "AUTOCOMPLETE"? What issue, if any, does the use of AUTOCOMPLETE pose?
7. Test defenses against application misuse (OTG-BUSLOGIC-007)
- What is the importance of testing for this vulnerability?
- Can adding additional characters in input fields cause unexpected results? Verify for at least two instances.
General Guidelines
You should document the results for the tests, your comments, and recommendations for improved security for each security control tested in a word or PDF document. The format of your document should be the format that is recommended in chapter 5 of the OWASP testing guide. Provide screen captures and descriptions of your tests conducted. Discuss any issues found and possible mitigations.