Virtual Labs

What is OS command injection?

a: A way to speed up command execution Explanation

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b: A vulnerability allowing execution of arbitrary commands Explanation

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c: A method for improving system performance Explanation

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d: A technique for optimizing queries Explanation

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Which of the following can help mitigate OS command injection?

a: Running commands with root privileges Explanation

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b: Using parameterized commands Explanation

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c: Avoiding input validation Explanation

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d: Directly incorporating user input in commands Explanation

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What does the following user input indicate: 'file.txt && cat /etc/passwd'?

a: An attempt to view a file and list its contents Explanation

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b: An attempt to execute multiple commands Explanation

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c: A benign file reading operation Explanation

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d: A syntax error in the command Explanation

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Why is input validation important to prevent OS command injection?

a: It allows users to input any command freely Explanation

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b: It ensures only safe and expected inputs are processed Explanation

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c: It speeds up the execution of commands Explanation

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d: It automatically fixes code vulnerabilities Explanation

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Advanced: How can OS command injection be exploited even when user input is partially sanitized?

a: Through command chaining or using alternate encodings Explanation

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b: By only executing safe commands Explanation

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c: By running the program offline Explanation

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d: By removing input validation entirely Explanation

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Advanced: Which is the most secure approach to prevent OS command injection in web applications?

a: Use parameterized commands and avoid dynamic command construction Explanation

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b: Allow user input but escape special characters Explanation

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c: Run all commands as root to catch errors quickly Explanation

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d: Validate input occasionally Explanation

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