c programming help

timer Asked: Nov 11th, 2016

Question description

1. Write a program that demonstrates the use of format strings for output functions. It should be a suitable example for an introductory programming course.

2. Write a program that has a format string flaw. Exploit the flaw to return the value of an unrelated variable. Using this program, exploit the flaw and modify the value of the unrelated variable. Show how to control the result.

3. Create a web application that uses a MySQL database backend. Demonstrate it. Next, create a web application that uses a MySQL database backend that suffers from a SQL injection vulnerability. Demonstrate it. Correct the flaw in the previous problem by correctly sanitizing the input.

4. Write a PHP script that suffers from a cross-site scripting vulnerability that can be exploited by a malicious link. Exploit the vulnerability to show a forged web page. Modify the previous script so that it retains the same functionality, but no longer suffers from a cross site scripting flaw.

put each question answer in one folder and put all the four folders in zip file

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