php.lang.security.ftp-use.ftp-use

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LGPL Commons Clause
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FTP allows for unencrypted file transfers. Consider using an encrypted alternative.

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Defintion

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rules:
  - id: ftp-use
    patterns:
      - pattern: $FUNC(...);
      - metavariable-regex:
          metavariable: $FUNC
          regex: ftp_.+
    message: FTP allows for unencrypted file transfers. Consider using an encrypted
      alternative.
    metadata:
      cwe:
        - "CWE-319: Cleartext Transmission of Sensitive Information"
      references:
        - https://www.php.net/manual/en/intro.ftp.php
        - https://github.com/FloeDesignTechnologies/phpcs-security-audit/blob/master/Security/Sniffs/BadFunctions/FringeFunctionsSniff.php
      category: security
      technology:
        - php
      owasp:
        - A03:2017 - Sensitive Data Exposure
        - A02:2021 - Cryptographic Failures
      subcategory:
        - audit
      likelihood: LOW
      impact: MEDIUM
      confidence: LOW
      license: Commons Clause License Condition v1.0[LGPL-2.1-only]
    languages:
      - php
    severity: ERROR

Examples

ftp-use.php

<?php

// ruleid: ftp-use
$conn_id = ftp_connect($ftp_server);

// ruleid: ftp-use
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);

// ok: ftp-use
ssh2_scp_send($connection, '/local/filename', '/remote/filename', 0644);