Vulnerability Fixation
How To Prevent Local Remote File Inclusion Attacks

What are LFI and RFI?

Local File Inclusion (LFI): Occurs when an attacker includes local server files (e.g., configuration or password files) through vulnerable input fields, allowing them to read or execute system files.

Remote File Inclusion (RFI): Similar to LFI, but the attacker includes a file from a remote server, potentially injecting malicious code hosted elsewhere.

Attack

Hackers exploit file inclusion features to insert malicious code or read sensitive files from the server. In LFI, files from the local system are targeted, while in RFI, external files are injected from another server.

Impact

These attacks can expose sensitive information, enable remote code execution, modify web content, or even compromise the entire server. LFI and RFI are common in PHP-based web applications.

Solution

Don’t allow direct file path inputs from users. Validate and sanitize all GET/POST parameters on the server side. In PHP, disable remote file inclusion by setting allow_url_fopen = off in php.ini or .htaccess.

Step - by - Step Video Guide

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