WordPress表单插件Forminator高危漏洞(CVE-2025-6463)技术分析与修复指南<\/h1>

漏洞概述<\/h2>
CVE编号<\/strong>: CVE-2025-6463
CVSS评分<\/strong>: 8.8(高危)
影响范围<\/strong>: Forminator插件所有≤1.44.2版本
活跃安装量<\/strong>: 超过60万个WordPress网站
漏洞类型<\/strong>: 未认证的任意文件删除漏洞
发现者<\/strong>: Phat RiO(BlueRock)通过Wordfence漏洞赏金计划发现
奖金金额<\/strong>: 8100美元(Wordfence漏洞赏金计划迄今最高额)<\/p>

漏洞技术分析<\/h2>
漏洞根源<\/h3>
漏洞存在于entry_delete_upload_files()<\/code>函数中，该函数负责处理表单提交数据的删除操作。主要问题包括：<\/p>
文件路径验证不足<\/strong>：未对表单字段值进行充分净化处理<\/li> 权限控制缺失<\/strong>：无需认证即可触发漏洞利用<\/li> 类型检查缺失<\/strong>：非文件上传字段也可提交文件数组<\/li> <\/ol> 漏洞触发流程<\/h3> 攻击者构造包含任意文件路径的恶意表单提交<\/li> 恶意提交被存入数据库(通过Forminator_Form_Entry_Model<\/code>类的set_fields()<\/code>方法)<\/li> 当管理员手动删除这些提交或系统自动清理时<\/li> entry_delete_upload_files()<\/code>函数处理这些提交<\/li> 服务器上的指定文件被永久删除(通过wp_delete_file($path)<\/code>)<\/li> <\/ol> 关键攻击向量<\/h3> 通过删除wp-config.php<\/code>文件(包含数据库凭证和安全密钥)使WordPress进入安装状态<\/li> 攻击者可借此完全控制网站数据库<\/li> 可能导致远程代码执行(RCE)<\/li> <\/ul> 风险要素分析<\/h2> 风险要素<\/th> 详细说明<\/th> <\/tr> <\/thead> 受影响产品<\/td> WordPress表单插件Forminator(所有≤1.44.2版本)<\/td> <\/tr> 影响程度<\/td> 任意文件删除<\/td> <\/tr> 利用条件<\/td> - 无需认证- 目标网站启用了Forminator表单- 具备表单提交能力- 管理员删除或自动清理提交记录<\/td> <\/tr> CVSS 3.1评分<\/td> 8.8(高危)<\/td> <\/tr> <\/tbody> <\/table> 修复方案<\/h2> 插件开发商WPMU DEV已在1.44.3版本中实施了多重防护措施：<\/p> 字段类型验证<\/strong>：限制仅"upload"和"signature"字段类型可删除文件<\/li> 路径规范化<\/strong>：使用wp_normalize_path()<\/code>和realpath()<\/code>函数强化上传目录路径限制<\/li> 目录限制<\/strong>：通过strpos()<\/code>验证确保文件路径位于WordPress上传目录内，防止目录遍历攻击<\/li> 文件名检查<\/strong>：在删除前使用sanitize_file_name()<\/code>检查文件基名有效性<\/li> <\/ol> 紧急行动建议<\/h2> 立即升级<\/strong>：所有WordPress管理员应立即将Forminator插件升级至1.44.3或更高版本<\/li> 安全检查<\/strong>：检查网站是否已被攻击，特别是wp-config.php<\/code>文件的完整性<\/li> 监控日志<\/strong>：审查近期表单提交记录，查找可疑活动<\/li> 备份恢复<\/strong>：如发现异常，从最近的干净备份恢复网站<\/li> <\/ol> 技术防护措施详解<\/h2> 1.44.3版本修复代码分析<\/h3> 字段类型验证<\/strong>：<\/li> <\/ol> if<\/span> (!<\/span>in_array<\/span>($field-><\/span>type<\/span>, array<\/span>('upload'<\/span>, 'signature'<\/span>), true<\/span>)) { <\/span><\/span> continue<\/span>; <\/span><\/span>} <\/span><\/span><\/code><\/pre> 路径限制<\/strong>：<\/li> <\/ol> $upload_dir =<\/span> wp_upload_dir<\/span>(); <\/span><\/span>$normalized_path =<\/span> wp_normalize_path<\/span>($path); <\/span><\/span>$real_path =<\/span> realpath<\/span>($normalized_path); <\/span><\/span>$upload_base =<\/span> realpath<\/span>(wp_normalize_path<\/span>($upload_dir['basedir'<\/span>])); <\/span><\/span> <\/span><\/span>if<\/span> (0<\/span> !==<\/span> strpos<\/span>($real_path, $upload_base)) { <\/span><\/span> continue<\/span>; <\/span><\/span>} <\/span><\/span><\/code><\/pre> 文件名检查<\/strong>：<\/li> <\/ol> $file_name =<\/span> sanitize_file_name<\/span>(basename<\/span>($normalized_path)); <\/span><\/span>if<\/span> ($file_name !==<\/span> basename<\/span>($normalized_path)) { <\/span><\/span> continue<\/span>; <\/span><\/span>} <\/span><\/span><\/code><\/pre>攻击场景模拟<\/h2> 攻击者准备阶段<\/strong>：<\/p> 识别目标网站使用Forminator插件(≤1.44.2)<\/li> 构造包含.wp-config.php<\/code>路径的恶意表单提交<\/li> <\/ul> <\/li> 漏洞利用阶段<\/strong>：<\/p> 提交恶意表单数据<\/li> 等待管理员删除提交或系统自动清理<\/li> <\/ul> <\/li> 攻击完成阶段<\/strong>：<\/p> wp-config.php<\/code>被删除<\/li> WordPress进入安装模式<\/li> 攻击者接管网站<\/li> <\/ul> <\/li> <\/ol> 长期防护建议<\/h2> 订阅安全通告<\/strong>：关注WordPress核心和插件安全更新<\/li> 最小权限原则<\/strong>：限制WordPress文件系统权限<\/li> 定期审计<\/strong>：检查所有插件和主题的安全性<\/li> 使用WAF<\/strong>：部署Web应用防火墙拦截可疑请求<\/li> 启用自动更新<\/strong>：对关键安全补丁启用自动更新机制<\/li> <\/ol> 参考资源<\/h2> Wordfence漏洞赏金计划公告<\/li> WPMU DEV官方安全通告<\/li> CVE-2025-6463官方描述<\/li> WordPress安全最佳实践指南<\/li> <\/ol>

风险要素<\/th>	详细说明<\/th> <\/tr> <\/thead>
受影响产品<\/td>	WordPress表单插件Forminator(所有≤1.44.2版本)<\/td> <\/tr>
影响程度<\/td>	任意文件删除<\/td> <\/tr>
利用条件<\/td>	- 无需认证- 目标网站启用了Forminator表单- 具备表单提交能力- 管理员删除或自动清理提交记录<\/td> <\/tr>
CVSS 3.1评分<\/td>	8.8(高危)<\/td> <\/tr> <\/tbody> <\/table> 修复方案<\/h2> 插件开发商WPMU DEV已在1.44.3版本中实施了多重防护措施：<\/p> 字段类型验证<\/strong>：限制仅"upload"和"signature"字段类型可删除文件<\/li> 路径规范化<\/strong>：使用`wp_normalize_path()<\/code>和realpath()<\/code>函数强化上传目录路径限制<\/li>` `目录限制<\/strong>：通过strpos()<\/code>验证确保文件路径位于WordPress上传目录内，防止目录遍历攻击<\/li>` 文件名检查<\/strong>：在删除前使用sanitize_file_name()<\/code>检查文件基名有效性<\/li> <\/ol> 紧急行动建议<\/h2> 立即升级<\/strong>：所有WordPress管理员应立即将Forminator插件升级至1.44.3或更高版本<\/li> 安全检查<\/strong>：检查网站是否已被攻击，特别是wp-config.php<\/code>文件的完整性<\/li> 监控日志<\/strong>：审查近期表单提交记录，查找可疑活动<\/li> 备份恢复<\/strong>：如发现异常，从最近的干净备份恢复网站<\/li> <\/ol> 技术防护措施详解<\/h2> 1.44.3版本修复代码分析<\/h3> 字段类型验证<\/strong>：<\/li> <\/ol> if<\/span> (!<\/span>in_array<\/span>($field-><\/span>type<\/span>, array<\/span>('upload'<\/span>, 'signature'<\/span>), true<\/span>)) { <\/span><\/span> continue<\/span>; <\/span><\/span>} <\/span><\/span><\/code><\/pre> 路径限制<\/strong>：<\/li> <\/ol> $upload_dir =<\/span> wp_upload_dir<\/span>(); <\/span><\/span>$normalized_path =<\/span> wp_normalize_path<\/span>($path); <\/span><\/span>$real_path =<\/span> realpath<\/span>($normalized_path); <\/span><\/span>$upload_base =<\/span> realpath<\/span>(wp_normalize_path<\/span>($upload_dir['basedir'<\/span>])); <\/span><\/span> <\/span><\/span>if<\/span> (0<\/span> !==<\/span> strpos<\/span>($real_path, $upload_base)) { <\/span><\/span> continue<\/span>; <\/span><\/span>} <\/span><\/span><\/code><\/pre> 文件名检查<\/strong>：<\/li> <\/ol> $file_name =<\/span> sanitize_file_name<\/span>(basename<\/span>($normalized_path)); <\/span><\/span>if<\/span> ($file_name !==<\/span> basename<\/span>($normalized_path)) { <\/span><\/span> continue<\/span>; <\/span><\/span>} <\/span><\/span><\/code><\/pre>攻击场景模拟<\/h2> 攻击者准备阶段<\/strong>：<\/p> 识别目标网站使用Forminator插件(≤1.44.2)<\/li> 构造包含.wp-config.php<\/code>路径的恶意表单提交<\/li> <\/ul> <\/li> 漏洞利用阶段<\/strong>：<\/p> 提交恶意表单数据<\/li> 等待管理员删除提交或系统自动清理<\/li> <\/ul> <\/li> 攻击完成阶段<\/strong>：<\/p> wp-config.php<\/code>被删除<\/li> WordPress进入安装模式<\/li> 攻击者接管网站<\/li> <\/ul> <\/li> <\/ol> 长期防护建议<\/h2> 订阅安全通告<\/strong>：关注WordPress核心和插件安全更新<\/li> 最小权限原则<\/strong>：限制WordPress文件系统权限<\/li> 定期审计<\/strong>：检查所有插件和主题的安全性<\/li> 使用WAF<\/strong>：部署Web应用防火墙拦截可疑请求<\/li> 启用自动更新<\/strong>：对关键安全补丁启用自动更新机制<\/li> <\/ol> 参考资源<\/h2> Wordfence漏洞赏金计划公告<\/li> WPMU DEV官方安全通告<\/li> CVE-2025-6463官方描述<\/li> WordPress安全最佳实践指南<\/li> <\/ol>