ECR Image Tag Not Immutable

Query id: d1846b12-20c5-4d45-8798-fc35b79268eb
Query name: ECR Image Tag Not Immutable
Platform: Terraform
Severity: Medium
Category: Insecure Configurations
URL: Github

Description¶

ECR should have an image tag be immutable. This prevents image tags from being overwritten.
Documentation

Code samples¶

Code samples with security vulnerabilities¶

Positive test num. 1 - tf file

resource "aws_ecr_repository" "foo2" {
  name                 = "bar"
  image_tag_mutability = "MUTABLE"

  image_scanning_configuration {
    scan_on_push = true
  }
}

resource "aws_ecr_repository" "foo3" {
  name                 = "bar"

  image_scanning_configuration {
    scan_on_push = true
  }
}

Code samples without security vulnerabilities¶

Negative test num. 1 - tf file

resource "aws_ecr_repository" "foo" {
  name                 = "bar"
  image_tag_mutability = "IMMUTABLE"

  image_scanning_configuration {
    scan_on_push = true
  }
}