No User Attached Policies | Vulnerability Database

IAM policies should not be granted directly to users.

CIS recommends that you apply IAM policies directly to groups and roles but not users. Assigning privileges at the group or role level reduces the complexity of access management as the number of users grow. Reducing access management complexity might in turn reduce opportunity for a principal to inadvertently receive or retain excessive privileges.

Impact

Complex access control is difficult to manage and maintain.

Recommended Actions

Follow the appropriate remediation steps below to resolve the issue.

Grant policies at the group level instead.

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resource "aws_iam_group" "developers" {
  name = "developers"
  path = "/users/"
}

resource "aws_iam_user" "jim" {
  name = "jim"
}

resource "aws_iam_group_membership" "devteam" {
  name = "developers-team"

  users = [
    aws_iam_user.jim.name,
  ]

  group = aws_iam_group.developers.name
}

resource "aws_iam_group_policy" "ec2policy" {
  name = "test"
  group = aws_iam_group.developers.name

  policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": [
        "ec2:Describe*"
      ],
      "Effect": "Allow",
      "Resource": "*"
    }
  ]
}
EOF
}
 			

Remediation Links

https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/iam_user