Practice Format String Vulnerability (1.3) - Application Security - Introductory Cyber Security
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Format String Vulnerability

Practice - Format String Vulnerability

Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is a format string vulnerability?

💡 Hint: Think about how user input can affect the execution of the program.

Question 2 Easy

Give an example of a safe format string usage.

💡 Hint: Consider how to prevent user input from being treated as executable code.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What does the %n format specifier do?

Writes to a memory address
Returns a string
Provides an integer value

💡 Hint: Consider how %n interacts with memory.

Question 2

True or False: Using user input directly as a format string is a safe practice.

True
False

💡 Hint: Think about the consequences of unsanitized input.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

A web application uses printf(user_input); in multiple areas. Identify the risks associated and propose a comprehensive plan to mitigate these vulnerabilities.

💡 Hint: Think about the consequences of not sanitizing input.

Challenge 2 Hard

Create a secure function to safely print user input using printf. Explain how it prevents format string vulnerabilities.

💡 Hint: Focus on how to enforce safety measures.

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Reference links

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