WAVLINK WN530HG4 - Improper Access Control

criticalseverity

9.8CVSS score

3.4%likelihood of exploitation, next 30 days

89%of all CVEs are less likely

Readycheck to confirm it

WAVLINK WN530HG4 M30HG4.V5030.191116 is susceptible to improper access control. It contains a hardcoded encryption/decryption key for its configuration files at /etc_ro/lighttpd/www/cgi-bin/ExportAllSettings.sh. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized operations.

Impact

An attacker can exploit this vulnerability to gain unauthorized access to the router's settings and potentially compromise the network.

Fix

Apply the latest firmware update provided by the vendor to fix the access control issue.

How to confirm it

Send: GET /backupsettings.dat
Positive when: contains "Salted__" AND contains in header "application/octet-stream" AND status 200

Run it with nuclei: nuclei -id CVE-2022-34045 -u <target>

The full check

id: CVE-2022-34045

info:
  name: WAVLINK WN530HG4 - Improper Access Control
  author: arafatansari
  severity: critical
  description: |
    WAVLINK WN530HG4 M30HG4.V5030.191116 is susceptible to improper access control. It contains a hardcoded encryption/decryption key for its configuration files at /etc_ro/lighttpd/www/cgi-bin/ExportAllSettings.sh. An attacker can possibly obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can exploit this vulnerability to gain unauthorized access to the router's settings and potentially compromise the network.
  remediation: |
    Apply the latest firmware update provided by the vendor to fix the access control issue.
  reference:
    - https://drive.google.com/file/d/1s5uZGC_iSzfCJt9BJ8h-P24vmsrmttrf/view?usp=sharing
    - https://nvd.nist.gov/vuln/detail/CVE-2022-34045
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/ARPSyndicate/cvemon
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 9.8
    cve-id: CVE-2022-34045
    cwe-id: CWE-798
    epss-score: 0.03364
    epss-percentile: 0.88833
    cpe: cpe:2.3:o:wavlink:wl-wn530hg4_firmware:m30hg4.v5030.191116:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: wavlink
    product: wl-wn530hg4_firmware
    shodan-query:
      - http.html:"WN530HG4"
      - http.html:"wn530hg4"
      - http.title:"wi-fi app login"
    fofa-query:
      - body="wn530hg4"
      - title="wi-fi app login"
    google-query: intitle:"wi-fi app login"
  tags: cve,cve2022,wavlink,exposure,vuln

http:
  - raw:
      - |
        GET /backupsettings.dat HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'Salted__'

      - type: word
        part: header
        words:
          - application/octet-stream

      - type: status
        status:
          - 200

References

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