JumpServer > 3.6.4 - Information Disclosure

id: CVE-2023-42442

info:
  name: JumpServer > 3.6.4 - Information Disclosure
  author: xianke
  severity: medium
  description: |
    JumpServer is an open source bastion host and a professional operation and maintenance security audit system. Starting in version 3.0.0 and prior to versions 3.5.5 and 3.6.4, session replays can download without authentication. Session replays stored in S3, OSS, or other cloud storage are not affected. The api `/api/v1/terminal/sessions/` permission control is broken and can be accessed anonymously. SessionViewSet permission classes set to `[RBACPermission | IsSessionAssignee]`, relation is or, so any permission matched will be allowed. Versions 3.5.5 and 3.6.4 have a fix. After upgrading, visit the api `$HOST/api/v1/terminal/sessions/?limit=1`. The expected http response code is 401 (`not_authenticated`).
  remediation: |
    Apply the latest security patches and updates from the vendor to address this vulnerability.
  impact: |
    The vulnerability allows an attacker to gain sensitive information from the JumpServer application.
  reference:
    - https://github.com/jumpserver/jumpserver/blob/v3.6.1/apps/terminal/api/session/session.py#L91
    - https://nvd.nist.gov/vuln/detail/CVE-2023-42442
    - https://github.com/jumpserver/jumpserver/commit/0a58bba59cd275bab8e0ae58bf4b359fbc5eb74a
    - https://github.com/Marco-zcl/POC
    - https://github.com/nomi-sec/PoC-in-GitHub
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 5.3
    cve-id: CVE-2023-42442
    cwe-id: CWE-287
    epss-score: 0.55861
    epss-percentile: 0.98923
    cpe: cpe:2.3:a:fit2cloud:jumpserver:*:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: fit2cloud
    product: jumpserver
    fofa-query:
      - title="JumpServer"
      - title="jumpserver"
  tags: cve2023,cve,jumpserver,exposure,fit2cloud,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/api/v1/terminal/sessions/"

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '"terminal":'
          - '"user_id":"'
          - '"account_id":'
        condition: and

      - type: word
        part: header
        words:
          - application/json

      - type: status
        status:
          - 200
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