Javascript Insecure Encryption Mode
Description
Detects the use of weak or insecure encryption configurations in JavaScript code that could lead to compromised data security. This includes usage of deprecated algorithms, weak cipher modes, or other cryptographically unsafe encryption practices that may expose sensitive data to attacks.
Detection Strategy
• Inspects JavaScript code for encryption-related function calls and configurations
• Identifies when weak or deprecated encryption algorithms are used (e.g., DES, RC4)
• Flags encryption operations using insecure modes of operation (e.g., ECB mode)
• Checks for insufficient key lengths or weak key generation practices in encryption setup
• Reports vulnerabilities when cryptographic configurations don't meet modern security standards
Vulnerable code example
const CryptoJS = require('crypto-js');
// Example of insecure crypto configurations
function insecureCrypto() {
// Vulnerable: Using insecure ECB mode
const unsafe1 = CryptoJS.AES.encrypt("data", "key", {
mode: CryptoJS.mode.ECB
});...✅ Secure code example
const CryptoJS = require('crypto-js');
function secureCrypto() {
// Generate random IV (16 bytes)
const iv = CryptoJS.lib.WordArray.random(16);
// Use strong key derivation with random salt
const salt = CryptoJS.lib.WordArray.random(16);...Search for vulnerabilities in your apps for free with Fluid Attacks' automated security testing! Start your 21-day free trial and discover the benefits of the Continuous Hacking Essential plan. If you prefer the Advanced plan, which includes the expertise of Fluid Attacks' hacking team, fill out this contact form.