Sensitive Port Is Exposed To Entire Network

• Query id: 0ac9abbc-6d7a-41cf-af23-2e57ddb3dbfc
• Query name: Sensitive Port Is Exposed To Entire Network
• Platform: Ansible
• Severity: High
• Category: Networking and Firewall
• URL: Github

Description

A sensitive port, such as port 23 or port 110, is open for the whole network in either TCP or UDP protocol
Documentation

Code samples

Code samples with security vulnerabilities

Positive test num. 1 - yaml file

---
- name: foo1
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example1
        priority: 100
        direction: Inbound
        access: Allow
        protocol: UDP
        source_port_range: "*"
        destination_port_range: "61621"
        source_address_prefix: "/0"
        destination_address_prefix: "*"
- name: foo2
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example2
        priority: 100
        direction: Inbound
        access: Allow
        protocol: TCP
        source_port_range: "*"
        destination_port_range: "23-34"
        source_address_prefix: "1.1.1.1/0"
        destination_address_prefix: "*"
- name: foo3
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example3
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "*"
        source_port_range: "*"
        destination_port_range: "21-23"
        source_address_prefix: "/0"
        destination_address_prefix: "*"
- name: foo4
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example4
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "*"
        source_port_range: "*"
        destination_port_range: "23"
        source_address_prefix: "0.0.0.0/0"
        destination_address_prefix: "*"
- name: foo5
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example5
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "UDP"
        source_port_range: "*"
        destination_port_range:
          - "23"
          - "245"
        source_address_prefix: "34.15.11.3/0"
        destination_address_prefix: "*"
- name: foo6
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example6
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "TCP"
        source_port_range: "*"
        destination_port_range: "23"
        source_address_prefix: "/0"
        destination_address_prefix: "*"
- name: foo7
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example7
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "UDP"
        source_port_range: "*"
        destination_port_range: "22-64, 94"
        source_address_prefix: "10.0.0.0/0"
        destination_address_prefix: "*"
- name: foo8
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example8
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "TCP"
        source_port_range: "*"
        destination_port_range:
          - "14"
          - "23"
          - "48"
        source_address_prefix: "12.12.12.12/0"
        destination_address_prefix: "*"
- name: foo9
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
      - name: example9
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "*"
        source_port_range: "*"
        destination_port_range:
          - "12"
          - "23-24"
          - "46"
        source_address_prefix: "/0"
        destination_address_prefix: "*"
      - name: example10
        priority: 100
        direction: Inbound
        access: Allow
        protocol: "*"
        source_port_range: "*"
        destination_port_range: 46-146, 18-36, 1-2, 3
        source_address_prefix: "1.2.3.4/0"
        destination_address_prefix: "*"

Code samples without security vulnerabilities

Negative test num. 1 - yaml file

- name: foo1
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example1
      priority: 100
      direction: Inbound
      access: Deny
      protocol: TCP
      source_port_range: '*'
      destination_port_range: 23
      source_address_prefix: '*'
      destination_address_prefix: '*'
- name: foo2
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example2
      priority: 100
      direction: Inbound
      access: Allow
      protocol: Icmp
      source_port_range: '*'
      destination_port_range: 23-24
      source_address_prefix: '*'
      destination_address_prefix: '*'
- name: foo3
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example3
      priority: 100
      direction: Inbound
      access: Allow
      protocol: TCP
      source_port_range: '*'
      destination_port_range: 8-174
      source_address_prefix: 0.0.0.0
      destination_address_prefix: '*'
- name: foo4
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example4
      priority: 100
      direction: Inbound
      access: Allow
      protocol: TCP
      source_port_range: '*'
      destination_port_range: 23-196
      source_address_prefix: 192.168.0.0
      destination_address_prefix: '*'
- name: foo5
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example5
      priority: 100
      direction: Inbound
      access: Allow
      protocol: TCP
      source_port_range: '*'
      destination_port_range: 23
      source_address_prefix: /1
      destination_address_prefix: '*'
- name: foo6
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example6
      priority: 100
      direction: Inbound
      access: Allow
      protocol: '*'
      source_port_range: '*'
      destination_port_range: 43
      source_address_prefix: /0
      destination_address_prefix: '*'
- name: foo7
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example7
      priority: 100
      direction: Inbound
      access: Allow
      protocol: Icmp
      source_port_range: '*'
      destination_port_range: 23
      source_address_prefix: internet
      destination_address_prefix: '*'
- name: foo8
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example8
      priority: 100
      direction: Inbound
      access: Allow
      protocol: '*'
      source_port_range: '*'
      destination_port_range: 22, 24,49-67
      source_address_prefix: any
      destination_address_prefix: '*'
- name: foo9
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example9
      priority: 100
      direction: Inbound
      access: Allow
      protocol: Icmp
      source_port_range: '*'
      destination_port_range: 23
      source_address_prefix: /0
      destination_address_prefix: '*'
- name: foo10
  azure_rm_securitygroup:
    resource_group: myResourceGroup
    name: mysecgroup
    rules:
    - name: example10
      priority: 100
      direction: Inbound
      access: Allow
      protocol: TCP
      source_port_range: '*'
      destination_port_range:
      - 23
      - 69
      source_address_prefix: 0.0.1.0
      destination_address_prefix: '*'
    - name: example11
      priority: 100
      direction: Inbound
      access: Allow
      protocol: TCP
      source_port_range: '*'
      destination_port_range:
      - 2
      - 310
      source_address_prefix: 0.0.0.0
      destination_address_prefix: '*'