Secure Web Systems

Answer the following questions :-

 

1. Compare and evaluate black box and white box testing.

2. What is the rationale for carrying out a W-APT?

3. Explain briefly what types of vulnerabilities may be present in a web application due to insufficient input validation.

4. With relevance to web-application vulnerabilities, what are race conditions and how can they be exploited?

5. Give an example of web application logic vulnerability.

1. Compare and evaluate black box and white box testing.

Security testing and examination techniques can be divided into two broad techniques depending on the amount of knowledge of the implementation details of the system being tested that are available to the testers

2. What is the rationale for carrying out a W-APT?

A penetration test is undertaken on a computer system that is to be deployed in a hostile environment, in particular any internet facing site, before it is deployed. The purpose of the test is to provide a level of practical assurance that any malicious user will not be able to penetrate the system.

3. Explain briefly what types of vulnerabilities may be present in a web application due to insufficient input validation.

Since the internet “environment” is so diverse and contains so many forms of programmatic content, input validation and sanity checking is the key to Web applications security.

4. With relevance to web-application vulnerabilities, what are race conditions and how can they be exploited?

Vulnerability scanners check only for the possible existence of vulnerability but the attack phase of a penetration test exploits the vulnerability to confirm its existence. One of the vulnerabilities exploited by penetration testing is race conditions.

5. Give an example of web application logic vulnerability

Cross-site scripting or XSS is an example of Web application logic vulnerability. XSS is the most prevalent and pernicious web application security issue.

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