Microsoft Copilot Studio 权限提升漏洞

此 XSS 漏洞允许攻击者在受害者的浏览器中执行恶意脚本。攻击者可以利用此漏洞窃取用户的敏感信息，例如凭据、会话令牌和个人数据。更严重的是，攻击者可以利用此漏洞提升网络权限，控制受害者系统，并进行进一步的攻击。由于 Copilot Studio 经常用于处理敏感数据和自动化任务，因此此漏洞的潜在影响非常大。攻击者可能能够冒充用户执行操作，访问受保护的资源，甚至完全控制 Copilot Studio 实例。

Organizations heavily reliant on Microsoft Copilot Studio for automation and customer engagement are at significant risk. Specifically, deployments where Copilot Studio interacts with sensitive data or integrates with other critical systems are particularly vulnerable. Teams using Copilot Studio for internal workflows or customer-facing applications should prioritize mitigation efforts.

• windows / dotnet: Monitor event logs for unusual script execution or unexpected redirects within Copilot Studio. Use Sysinternals tools like Process Monitor to observe network activity and file system changes related to Copilot Studio processes.

Get-WinEvent -LogName Application -FilterXPath "//*[System[Provider[@Name='Microsoft-Windows-SysInternals-ProcessMonitor']]]"

• generic web: Monitor access logs for requests containing suspicious characters or patterns commonly associated with XSS payloads (e.g., <script>, onerror=). Check response headers for unexpected content or redirects.

grep -i '<script' /var/log/apache2/access.log

1. 2024-11-26Disclosure

   disclosure

1. 已保留2024-10-11
2. 发布日期2024-11-26
3. 修改日期2025-07-08
4. EPSS 更新日期2026-04-02

微软已发布安全更新以修复此漏洞。建议用户立即更新到修复版本。如果无法立即更新，可以考虑以下缓解措施：实施严格的输入验证和输出编码，以防止恶意脚本注入。使用内容安全策略（CSP）来限制浏览器可以加载的资源。监控 Copilot Studio 实例的活动，以检测可疑行为。如果可能，禁用或限制 Copilot Studio 的某些功能，以减少攻击面。更新后，请确认漏洞已修复，可以通过检查 Copilot Studio 的安全配置和运行安全扫描来验证。