Weak encryption (Blowfish) of a password detected.

• Rule ID: ruby_lang_weak_password_encryption_blowfish
• Languages: ruby
• Source: weak_password_encryption_blowfish.yml

Description

A weak encryption library can lead to data breaches and greater security risk. Moreover, since encryption is reversible, it is possible to retrieve the plaintext value. This makes encryption a bad choice for passwords. Instead, passwords should be hashed.

Remediations

❌ Do not use encryption for passwords, wherever possible.

✅ Use a recommended hashing library such as bcrypt or Argon2id for passwords

BCrypt::Password.create("password_123")

hasher = Argon2::Password.new()
hasher.create("password_123")

Resources

• OWASP Password Storage Cheat Sheet
• BCrypt Explained
• ruby-argon2

Associated CWE

• CWE-331: Insufficient Entropy
• CWE-326: Inadequate Encryption Strength
• CWE-916: Use of Password Hash With Insufficient Computational Effort

OWASP Top 10

• A02:2021 - Cryptographic Failures

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=ruby_lang_weak_password_encryption_blowfish

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=ruby_lang_weak_password_encryption_blowfish