cisco-smi-exposure: Cisco Smart Install Endpoints Exposure

id: cisco-smi-exposure

info:
  name: Cisco Smart Install Endpoints Exposure
  author: dwisiswant0
  severity: medium
  description: Cisco Smart Install endpoints were discovered. Exposure of SMI to untrusted networks could allow complete compromise of the switch.
  reference:
    - https://blog.talosintelligence.com/2017/02/cisco-coverage-for-smart-install-client.html
    - https://blogs.cisco.com/security/cisco-psirt-mitigating-and-detecting-potential-abuse-of-cisco-smart-install-feature
    - https://tools.cisco.com/security/center/content/CiscoSecurityResponse/cisco-sr-20170214-smi
    - https://github.com/Cisco-Talos/smi_check/blob/master/smi_check.py#L52-L53
    - https://github.com/Sab0tag3d/SIET
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cwe-id: CWE-200
  metadata:
    max-request: 1
  tags: network,cisco,smi,exposure,tcp

tcp:
  - inputs:
      - data: "000000010000000100000004000000080000000100000000"
        type: hex

    host:
      - "{{Hostname}}"
    port: 4786

    matchers:
      - type: word
        encoding: hex
        words:
          - "000000040000000000000003000000080000000100000000"
# digest: 4b0a00483046022100cb05a10e044981d52b0085c87b4698d249625ecab4a28828c443ef787cb7712c022100c369328834190764cccdf3a4ab87cb909e758ee6b878a8433422a756778e8856:922c64590222798bb761d5b6d8e72950