45 lines
2.1 KiB
Plaintext
45 lines
2.1 KiB
Plaintext
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WordPress makes it possible to install and update themes and plugins in the Administration Screens.
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This is a convenient feature but it's also risky.
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If an attacker manages to get access to the WordPress administrative area, this person can
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then take advantage of the theme/plugin management feature to upload PHP code on the server
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and to execute that code.
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Defining the `DISALLOW_FILE_MODS` option to `true` in `wp-config.php` disables this risky feature.
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The default value is `false`.
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== Ask Yourself Whether
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* Theme or plugin management features are available to users who cannot be fully trusted.
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* There's a chance that the accounts of authorized users get compromised.
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There is a risk if you answered yes to any of those questions.
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== Recommended Secure Coding Practices
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* Manage themes and plugins without WordPress Administration Screens. Using wp-cli is a possible option.
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* Make sure that `DISALLOW_FILE_MODS` is defined in `wp-config.php`.
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* Make sure that `DISALLOW_FILE_MODS` is set to `true`.
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== Sensitive Code Example
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----
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define( 'DISALLOW_FILE_MODS', false ); // Sensitive
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----
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== Compliant Solution
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----
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define( 'DISALLOW_FILE_MODS', true );
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----
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== See
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* https://wordpress.org/support/article/editing-wp-config-php/#disable-plugin-and-theme-update-and-installation[wordpress.org] - Disable Plugin and Theme Update and Installation
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* https://owasp.org/www-project-top-ten/2017/A1_2017-Injection[OWASP Top 10 2017 Category A1] - Injection
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* https://owasp.org/www-project-top-ten/2017/A6_2017-Security_Misconfiguration.html[OWASP Top 10 2017 Category A6] - Security Misconfiguration
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* https://owasp.org/www-project-top-ten/2017/A7_2017-Cross-Site_Scripting_(XSS)[OWASP Top 10 2017 Category A7] - Cross-Site Scripting (XSS)
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* https://cwe.mitre.org/data/definitions/79[MITRE, CWE-79] - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
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* https://cwe.mitre.org/data/definitions/94[MITRE, CWE-94] - Improper Control of Generation of Code ('Code Injection')
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* https://cwe.mitre.org/data/definitions/95[MITRE, CWE-95] - Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
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