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Buffer-Overflow Attack Lab (Set-UID Version)

Overview

The learning objective of this lab is for students to gain the first-hand experience on buffer-overflow vulnerability by putting what they have learned about the vulnerability from class into actions. Buffer overflow is defined as the condition in which a program attempts to write data beyond the boundaries of pre-allocated fixed length buffers. This vulnerability can be utilized by a malicious user to alter the flow control of the program, even execute arbitrary pieces of code. This vulnerability arises due to the mixing of the storage for data (e.g. buffers) and the storage for controls (e.g. return addresses): an overflow in the data part can affect the control flow of the program, because an overflow can change the return address.

Activities: Students are given a program that has the buffer-overflow problem, and they need to exploit the vulnerability to gain the root privilege. Moreover, students will experiment with several protection schemes that have been implemented in Linux, and evaluate their effectiveness.

Tasks (English) (Spanish)

Time (Suggested)

  • Supervised (closely-guided lab session): 2 hours
  • Unsupervised (take-home project): 1 week

SEED Videos

SEED Books (English) (Chinese)

  • Computer & Internet Security: A Hands-on Approach, 2nd edition (§ 4)
  • Computer Security: A Hands-on Approach, 2nd edition (§ 4)
  • Chinese version, 1st edition (§ 4)

Additional Reading

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