Group with privilege escalation by actions 'iam:UpdateLoginProfile'

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Metadata

Id: terraform-aws-group-with-privilege-escalation-by-actions-iam-updateloginprofile

Provider: AWS

Platform: Terraform

Severity: Medium

Category: Access Control

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Description

Allowing an IAM group the iam:UpdateLoginProfile action on all resources ("Resource": "*") is a significant privilege escalation risk. With this permission, any user in the group can reset or change the console password of any IAM user in the AWS account, effectively taking over their credentials. If left unaddressed, malicious or compromised users could gain access to higher privileges, potentially leading to unauthorized access, data exfiltration, or service disruption.

Compliant Code Examples

resource "aws_iam_group" "cosmic2" {
  name = "cosmic2"
}

resource "aws_iam_group_policy" "scoped_inline_policy" {
  name  = "scoped_inline_policy"
  group = aws_iam_group.cosmic2.name

  policy = jsonencode({
    Version = "2012-10-17"
    Statement = [
      {
        Action = [
          "iam:UpdateLoginProfile",
        ]
        Effect   = "Allow"
        Resource = "arn:aws:iam::123456789012:user/scoped-user"
      },
    ]
  })
}

Non-Compliant Code Examples

resource "aws_iam_group" "cosmic" {
  name = "cosmic"
}

resource "aws_iam_group_policy" "test_inline_policy" {
  name = "test_inline_policy"
  group = aws_iam_group.cosmic.name

  policy = jsonencode({
    Version = "2012-10-17"
    Statement = [
      {
        Action = [
          "iam:UpdateLoginProfile",
        ]
        Effect   = "Allow"
        Resource = "*"
      },
    ]
  })
}