# Weak Password Recovery Mechanism for Forgotten Password (CWE-640)

The product contains a mechanism for users to recover or change their passwords without knowing the original password, but the mechanism is weak.

**Stack:** JavaScript

- Prevalence: Wysoka Często wykorzystywana
- Impact: Wysoki 3 reguł o wysokim poziomie
- Prevention: Udokumentowane 3 przykładów poprawek

**OWASP:** Identification and Authentication Failures (A07:2021-Identification and Authentication Failures) - #7

## Description

Weak password recovery mechanisms can be exploited to take over user accounts. Common issues include predictable reset tokens, security questions with easily guessable answers, or lack of verification.

## Prevention

Strategie zapobiegania dla Weak Password Recovery oparte na 1 regułach detekcji Shoulder.

### JavaScript

Use crypto.randomBytes() instead of Math.random() for security tokens

## Warning Signs

- [HIGH] predictable random number generation (Math

## Consequences

- Uzyskanie uprawnień
- Obejście mechanizmu ochrony

## Mitigations

- Do linków resetowania hasła używaj mocnych, losowych tokenów
- Wdroż wygasanie tokenów (np. po 1 godzinie)
- Wymagaj dodatkowej weryfikacji, np. e-mailem lub SMS-em
- Nigdy nie umieszczaj tokenu resetowania w URL-ach, które mogą być logowane

## Detection

- Total rules: 3
- Languages: go, javascript, typescript, python

## Rules by Language

### Javascript (1 rules)

- **Weak Password Reset Token** [HIGH]: Detects predictable random number generation (Math.random) used for password reset tokens.
  - Remediation: Use cryptographically secure random:

```javascript
const crypto = require('crypto');
const resetToken = crypto.randomBytes(32).toString('hex');
```

Learn more: https://shoulder.dev/learn/javascript/cwe-640/weak-password-reset-token

### Typescript (1 rules)

- **Weak Password Reset Token** [HIGH]: Detects predictable random number generation (Math.random) used for password reset tokens.
  - Remediation: Use cryptographically secure random:

```javascript
const crypto = require('crypto');
const resetToken = crypto.randomBytes(32).toString('hex');
```

Learn more: https://shoulder.dev/learn/javascript/cwe-640/weak-password-reset-token