xiaoyunjie openvpn-cms-flask 文件上传 controller.py 路径遍历漏洞

攻击者可以利用此路径遍历漏洞访问服务器上的敏感文件，例如配置文件、数据库凭据或源代码。通过控制上传文件的路径，攻击者可以读取或修改任意文件，从而可能导致信息泄露、权限提升或系统控制。该漏洞的成功利用可能导致严重的后果，包括数据泄露、服务中断和安全事件。由于该漏洞已公开披露，攻击者可能已经开始利用它。

Organizations utilizing openvpn-cms-flask in their infrastructure, particularly those with publicly accessible file upload endpoints, are at risk. Environments with weak file upload validation or inadequate WAF protection are especially vulnerable. Shared hosting environments where multiple users share the same server resources are also at increased risk.

• python: Monitor file upload endpoints for unusual file extensions or paths.

# Example: Check for suspicious characters in uploaded filenames
import re
filename = request.files['image'].filename
if re.search(r'../', filename):
    print('Potential path traversal attempt!')

• generic web: Check access and error logs for requests containing path traversal sequences (e.g., ../). • generic web: Use curl to test file upload endpoints with crafted filenames containing path traversal sequences.

curl -F 'image=@malicious_file.php?../../../../etc/passwd' http://your-openvpn-cms-flask-instance/upload

1. 2025-06-27Disclosure

   disclosure

2. 2025-06-27Patch

   patch

3. 2025-06-27PoC

   poc

4. 2025-06-27CISA KEV

   kev

1. 已保留2025-06-27
2. 发布日期2025-06-27
3. EPSS 更新日期2026-03-23

最有效的缓解措施是立即升级 openvpn-cms-flask 组件至版本 1.2.8。该版本包含修复此漏洞的补丁。如果无法立即升级，可以考虑实施临时缓解措施，例如限制上传文件的类型和大小，并严格控制上传目录的访问权限。此外，可以配置 Web 应用防火墙 (WAF) 或代理服务器，以检测和阻止可疑的文件上传请求。升级后，请验证补丁是否已成功应用，并确认漏洞已得到修复。