Do not use user input with FTP.

• Rule ID: php_lang_ftp_using_user_input
• Languages: php
• Source: ftp_using_user_input.yml

Description

Using raw unsanitized input with FTP methods is bad practice. It could put your application at risk for code injection attacks, or lead to path traversal, by which attackers can gain access to resources outside of the intended scope.

Remediations

❌ Do not form filenames or file paths for FTP from raw user input

$connection = ftp_ssl_connect("ftp.example.com", 21);
ftp_delete($connection, $_GET["name"]);

❌ Do not pass raw user input as arguments to FTP methods

$connection = ftp_ssl_connect($_GET["host"], 21);

Resources

• OWASP code injection
• OWASP path traversal

Associated CWE

• CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

OWASP Top 10

• A01:2021 - Broken Access Control

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=php_lang_ftp_using_user_input

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=php_lang_ftp_using_user_input