Question

Why does the cookie used in stack checking need to be a random number?

a.

To prevent an attacker from adding the cookie’s value to the overflowing payload and bypassing the stack protection.

b.

To stop program execution immediately

c.

To generate random numbers for the stack

d.

To execute malicious code

Posted under Reverse Engineering

Answer: (a).To prevent an attacker from adding the cookie’s value to the overflowing payload and bypassing the stack protection. Explanation:The cookie used in stack checking needs to be a random number to prevent an attacker from adding the cookie’s value to the overflowing payload and bypassing the stack protection.

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