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QThrough a successful format-string attack against a web application, an attacker is able to execute which of the following actions?

ID: #23263 Secure Programming Practices 141 views
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#23263Q ID
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  • A Write only certain areas using tokens ✔ ✖
  • B Read certain memory areas using the %s token ✔ ✖
  • C Read and write to memory at will ✔ ✖
  • D All the above options ✔ ✖
Correct Answer: Option C

Explanation

The correct answer is:

Read and write to memory at will

Explanation: A format-string attack occurs when an attacker manipulates a format string function (e.g., printf or sprintf) in an insecure way to read from or write to arbitrary memory locations. By carefully crafting format strings (such as using %x, %s, etc.), the attacker can potentially access and modify memory contents, including sensitive data. This kind of attack can allow an attacker to execute arbitrary code, leading to severe security vulnerabilities.

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