ServiceStack FindType 目录遍历远程代码执行漏洞

攻击者可以利用此漏洞在 ServiceStack 应用中执行任意代码，从而完全控制受影响的系统。攻击者可能能够读取敏感数据、修改系统配置、安装恶意软件，甚至利用该系统作为跳板攻击其他系统。由于该漏洞涉及文件操作，攻击者可能需要与 ServiceStack 库进行交互，但攻击向量可能因具体实现而异。该漏洞的潜在影响非常严重，可能导致数据泄露、系统破坏和业务中断。

Applications built using ServiceStack versions 8.4.0 through 8.4.0 are at direct risk. Specifically, systems where ServiceStack is deployed in environments with limited network segmentation or where user input is not properly sanitized are particularly vulnerable. Shared hosting environments utilizing ServiceStack are also at increased risk due to the potential for cross-tenant exploitation.

• .NET / dotnet: Use Sysinternals Process Monitor to observe file access attempts by ServiceStack processes, specifically looking for attempts to access unexpected or unauthorized file paths. • .NET / dotnet: Examine ServiceStack application logs for unusual error messages or exceptions related to file access or path manipulation. • .NET / dotnet: Review application code for instances where user-supplied input is directly used in file path construction without proper validation. • .NET / dotnet: Use a debugger to step through the FindType method and observe the values of user-supplied parameters to identify potential malicious input.

1. 2025-06-25Disclosure

   disclosure

1. 已保留2025-06-20
2. 发布日期2025-06-25
3. EPSS 更新日期2026-03-23

最有效的缓解措施是立即升级至 ServiceStack 8.06 或更高版本。如果无法立即升级，可以考虑以下临时缓解措施：限制对 FindType 方法的访问，严格验证用户提供的路径，并实施严格的访问控制策略。此外，可以考虑使用 Web 应用防火墙 (WAF) 或代理服务器来过滤恶意请求。监控系统日志，查找异常活动，并及时响应潜在的安全事件。升级后，请确认漏洞已成功修复，例如通过运行测试用例或执行安全扫描。