40 lines
935 B
Plaintext
40 lines
935 B
Plaintext
include::../description.adoc[]
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include::../ask-yourself.adoc[]
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include::../recommended.adoc[]
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== Sensitive Code Example
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In Express.js application the code is sensitive if the https://www.npmjs.com/package/helmet[helmet] `+referrerPolicy+` middleware is disabled or used with `+no-referrer-when-downgrade+` or `+unsafe-url+`:
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----
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const express = require('express');
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const helmet = require('helmet');
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app.use(
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helmet.referrerPolicy({
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policy: 'no-referrer-when-downgrade' // Sensitive: no-referrer-when-downgrade is used
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})
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);
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----
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== Compliant Solution
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In Express.js application a secure solution is to user the https://www.npmjs.com/package/helmet[helmet] referrer policy middleware set to `+no-referrer+`:
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----
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const express = require('express');
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const helmet = require('helmet');
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let app = express();
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app.use(
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helmet.referrerPolicy({
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policy: 'no-referrer' // Compliant
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})
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);
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----
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include::../see.adoc[]
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