GCP Projects have OS Login disabled misconfiguration detected in code

Rule Details

Cortex AppSec Rule ID	APPSEC_GCP_34
Category - Subcategory	Public Exposure - Admin Interfaces
Provider	GCP
Severity	LOW
Framework	Terraform, Terraform Plan
Mapped CSPM/KSPM Rule	84158703-d321-484e-be15-a780c2dfca48

Impact

Enabling OSLogin ensures that SSH keys used to connect to instances are mapped with IAM users. Revoking access to IAM user will revoke all the SSH keys associated with that particular user. It facilitates centralized and automated SSH key pair management. This is useful in handling cases such as response to compromised SSH key pairs and/or revocation of external/third-party/Vendor users. We recommend you enable OSLogin to bind SSH certificates to IAM users and facilitates effective SSH certificate management.

How to Fix

Resource: google_compute_project_metadata

• Arguments: enable-oslogin
• Resource: google_compute_instance
• Arguments: enable-oslogin Should not override project metadata: should not be set to false. //Option 1 [source,go]

---

resource "google_compute_project_metadata" "default" { metadata = {

• enable-oslogin = true } }

//Option 2 resource "google_compute_instance" "default" { name = "test" machine_type = "n1-standard-1" zone = "us-central1-a" boot_disk {} metadata = {

• enable-oslogin = false } }

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