Redis Publicly Accessible

• Query id: 5089d055-53ff-421b-9482-a5267bdce629
• Query name: Redis Publicly Accessible
• Platform: Terraform
• Severity: High
• Category: Networking and Firewall
• URL: Github

Description

Firewall rule allowing unrestricted access to Redis from other Azure sources
Documentation

Code samples

Code samples with security vulnerabilities

Postitive test num. 1 - tf file

resource "azurerm_redis_cache" "positive1" {
  name                = "redis${random_id.server.hex}"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  capacity            = 1
  family              = "P"
  sku_name            = "Premium"
  enable_non_ssl_port = false

  redis_configuration {
    maxclients         = 256
    maxmemory_reserved = 2
    maxmemory_delta    = 2
    maxmemory_policy   = "allkeys-lru"
  }
}

resource "azurerm_redis_firewall_rule" "positive2" {
  name                = "someIPrange"
  redis_cache_name    = azurerm_redis_cache.example.name
  resource_group_name = azurerm_resource_group.example.name
  start_ip            = "1.2.3.4"
  end_ip              = "2.3.4.5"
}

Code samples without security vulnerabilities

Negative test num. 1 - tf file

resource "azurerm_redis_cache" "negative1" {
  name                = "redis${random_id.server.hex}"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  capacity            = 1
  family              = "P"
  sku_name            = "Premium"
  enable_non_ssl_port = false

  redis_configuration {
    maxclients         = 256
    maxmemory_reserved = 2
    maxmemory_delta    = 2
    maxmemory_policy   = "allkeys-lru"
  }
}

resource "azurerm_redis_firewall_rule" "negative2" {
  name                = "someIPrange"
  redis_cache_name    = azurerm_redis_cache.example.name
  resource_group_name = azurerm_resource_group.example.name
  start_ip            = "10.2.3.4"
  end_ip              = "10.3.4.5"
}