Which of the following is a common coding error in which boundary checking is not performed?
A.
Input validation
B.
Fuzzing
C.
Secure coding
D.
Cross-site scripting
Explanation:
Input validation is a defensive technique intended to mitigate against possible user input attacks, such as
buffer overflows and fuzzing. Input validation checks every user input submitted to the application before
processing that input. The check could be a length, a character type, a language type, or a domain.
Incorrect Answers:
B: Fuzzing is a software testing technique that involves providing invalid, unexpected, or random data to
as inputs to a computer program. The program is then monitored for exceptions such as crashes, or failed
validation, or memory leaks.
C: Proper and secure coding can prevent many attacks, including cross-site scripting, SQL injection and
buffer overflows.
D: Cross-site scripting (XSS) is a form of malicious code-injection attack on a web server in which an
attacker injects code into the content sent to website visitors. XSS can be mitigated by implementing
patch management on the web server, using firewalls, and auditing for suspicious activityhttp://en.wikipedia.org/wiki/Fuzz_testing
Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis,
2014, pp. 218, 257
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp. 192, 229, 319