CompTIA CySA+ Certification - (CS0-003) Exam Questions

Fuzzing is an automated software assessment technique that involves providing invalid, unexpected, or random data as inputs to a computer program. The program is then monitored for exceptions (crashes), failing built-in code assertions, or finding potential memory leaks. Static code analysis is a method of debugging by examining source code before a program is run. Known bad data injection is a technique where data known to cause an exception or fault is entered as part of the testing/assessment. With known bad data injections, you would not use randomly generated data sets, though. For support or reporting issues, include Question ID: 63fe08673b7322449ddbda06 in your ticket. Thank you.

This code appends user-supplied input (id) directly to a variable (page) without any form of input validation or sanitization. If this data is later rendered in a web page, it could lead to a cross-site scripting (XSS) vulnerability, where an attacker injects malicious HTML or JavaScript (e.g., <script>...</script>) into the response. To prevent this, input should be validated against expected formats and sanitized before being used in any output or processing logic. A race condition involves timing issues in concurrent processes, which this single line of code does not demonstrate. Improper error handling would involve missing try/catch blocks or failure to manage exceptions, which isn’t shown here. Insufficient logging and monitoring relate to the system’s ability to detect or respond to malicious behavior, but there's no context in this snippet to assess that. The only clear issue is the direct use of unsanitized user input, pointing to a lack of input validation.   For support or reporting issues, include Question ID: 63fe08383b7322449ddbd7bf in your ticket. Thank you.