IAM password policy does not require uppercase letter

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Metadata

Id: 2c3d4ghwt-e5f6-7890-ab12-cd34ef567890

Cloud Provider: AWS

Platform: Terraform

Severity: Medium

Category: Best Practices

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Description

This check ensures that the AWS IAM password policy requires users to include at least one uppercase letter in their passwords. Without enforcing uppercase characters, passwords become more susceptible to brute-force or dictionary attacks, as the possible character space is significantly reduced. This weakens account security and increases the risk of unauthorized access to critical resources. Enforcing a strong password policy, including uppercase letter requirements, helps protect sensitive AWS environments from compromise due to easily guessed or weak passwords.

Compliant Code Examples

resource "aws_iam_account_password_policy" "good_example" {
  minimum_password_length      = 14
  require_symbols              = true
  require_numbers              = true
  require_lowercase_characters = true
  require_uppercase_characters = true
}

Non-Compliant Code Examples

resource "aws_iam_account_password_policy" "bad_example" {
  minimum_password_length      = 14
  require_symbols              = true
  require_numbers              = true
  require_lowercase_characters = true
  require_uppercase_characters = false
}