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| function insecurePassword(): string { | ||
| // BAD: the random suffix is not cryptographically secure | ||
| const suffix = Math.random(); | ||
| const password = "myPassword" + suffix; |
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Insecure randomness High
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AI 11 months ago
To fix the problem, we need to replace the use of Math.random() with a cryptographically secure random number generator. In Node.js, we can use the crypto module's randomBytes function to generate a secure random suffix. This will ensure that the generated password is not easily predictable.
- Import the
cryptomodule at the beginning of the file. - Replace the
Math.random()call withcrypto.randomBytesto generate a secure random suffix. - Convert the random bytes to a suitable format for appending to the password string.
| @@ -3,2 +3,3 @@ | ||
| import fs from "fs"; | ||
| import crypto from "crypto"; | ||
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| @@ -21,4 +22,4 @@ | ||
| function insecurePassword(): string { | ||
| // BAD: the random suffix is not cryptographically secure | ||
| const suffix = Math.random(); | ||
| // GOOD: the random suffix is cryptographically secure | ||
| const suffix = crypto.randomBytes(4).toString('hex'); | ||
| const password = "myPassword" + suffix; |
| function insecurePassword(): string { | ||
| // BAD: the random suffix is not cryptographically secure | ||
| const suffix = Math.random(); | ||
| const password = "myPassword" + suffix; |
Check failure
Code scanning / CodeQL
Insecure randomness High
Show autofix suggestion
Hide autofix suggestion
Copilot Autofix
AI 11 months ago
To fix the problem, we need to replace the use of Math.random() with a cryptographically secure random number generator. In a Node.js environment, we can use the crypto module's randomBytes method to generate secure random values. We will convert these bytes to a number to append to the password.
Specifically, we will:
- Import the
cryptomodule. - Replace the
Math.random()call with a call tocrypto.randomBytes. - Convert the random bytes to a number suitable for appending to the password.
| @@ -4,2 +4,3 @@ | ||
| import type { HelperMetadata } from "./helpers-generated.ts"; | ||
| import { randomBytes } from "crypto"; | ||
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| @@ -27,4 +28,4 @@ | ||
| function insecurePassword(): string { | ||
| // BAD: the random suffix is not cryptographically secure | ||
| const suffix = Math.random(); | ||
| // GOOD: the random suffix is cryptographically secure | ||
| const suffix = randomBytes(4).readUInt32BE(0); | ||
| const password = "myPassword" + suffix; |
v2 of this change
Filter not working correctly
https://github.com/advanced-security/sample-javascript-monorepo/security/code-scanning?query=is%3Aopen+pr%3A11+tag%3Aproject%2Fcli
tags are applied appropriately