How can attackers exploit vulnerabilities in PHP scripts to gain unauthorized access to servers and install malicious software?

SQL injection
Cross-site scripting
Remote code execution
File inclusion
Vulnerability scanning

Attackers can exploit vulnerabilities in PHP scripts by injecting malicious code, exploiting insecure file permissions, or manipulating input data to execute unauthorized commands. To prevent this, developers should sanitize user input, validate data before processing it, and regularly update PHP scripts to patch any known vulnerabilities.

php

// Sanitize user input to prevent code injection
$user_input = filter_var($_POST['user_input'], FILTER_SANITIZE_STRING);

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PHP MySQL select list
What is the PHP function used to delete a file and what are some potential pitfalls when using it?

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How can attackers exploit vulnerabilities in PHP scripts to gain unauthorized access to servers and install malicious software?

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