Custom subscription role grants owner rights Affecting Authorization service in Azure
Severity Framework
CCSS (Common Configuration Scoring System) is a set of measures used to determine the severity of the rule.
Snyk CCSS
Rule category
Each rule is associated with a high-level category. For example IAM, Container, Monitoring, Logging, Network, etc.
IAM/ Least Privilege
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- Snyk IDSNYK-CC-00503
- creditSnyk Research Team
Description
Granting permission to perform any action is against the principle of least privilege.
How to fix?
Set properties.permissions attribute to specific actions only, e.g Microsoft.Storage/storageAccounts/blobServices/containers/read.
Set permissions.actions attribute to specific actions only, e.g Microsoft.Storage/storageAccounts/blobServices/containers/read.
Example Configuration
resource "azurerm_role_definition" "allowed1" {
name = "my-custom-role503v1"
scope = data.azurerm_subscription.primary.id
description = "This is a custom role created via Terraform"
permissions {
actions = ["Microsoft.Storage/storageAccounts/blobServices/containers/read"]
not_actions = []
}
assignable_scopes = [data.azurerm_subscription.primary.id]
}