Azure Logic Apps 权限提升漏洞

攻击者可以利用此路径遍历漏洞访问Logic Apps实例中未授权的资源。通过构造恶意的文件路径，攻击者可以读取、写入或执行位于受限目录之外的文件。这可能导致敏感数据泄露、恶意代码执行，甚至完全控制受影响的Logic Apps实例。由于Logic Apps通常用于自动化业务流程和集成系统，因此此漏洞可能对整个组织造成广泛的影响。攻击者可以利用此漏洞访问连接到Logic Apps的下游系统，从而实现横向移动并扩大攻击范围。

Organizations heavily reliant on Azure Logic Apps for automation and integration workflows are at risk. Specifically, environments with complex Logic App configurations or those that handle sensitive data are particularly vulnerable. Shared hosting environments utilizing Azure Logic Apps should also be carefully reviewed.

• azure: Monitor Azure Activity Logs for suspicious API calls related to file operations within Logic Apps. Look for unusual patterns of file access or modification.

Get-AzActivityLog -ResourceGroupName "YourResourceGroup" -Search "LogicApp" -Status Succeeded -TimeGenerated @{StartTime = (Get-Date).AddDays(-7);EndTime = Get-Date} | Where-Object {$_.OperationName -like "*Write*"} | Select-Object OperationName, TimeGenerated, Caller

• azure: Utilize Azure Security Center/Defender for Cloud to detect and alert on potential path traversal attempts. Configure custom rules to identify suspicious file access patterns. • generic web: Review Azure Logic Apps logs for attempts to access files outside of the intended directory. Look for unusual file paths or characters in the request URLs. • generic web: Implement web application firewall (WAF) rules to block requests containing suspicious characters or patterns that could indicate a path traversal attack.

1. 2026-01-22Disclosure

   disclosure

1. 已保留2025-12-11
2. 发布日期2026-01-22
3. 修改日期2026-04-01
4. EPSS 更新日期2026-03-23

为了减轻CVE-2026-21227的影响，建议采取以下措施。首先，限制Logic Apps实例对文件系统的访问权限，只允许访问必要的资源。其次，实施严格的输入验证，以防止攻击者操纵文件路径。如果无法立即升级，可以考虑使用网络防火墙或代理服务器来限制对Logic Apps实例的访问。此外，应定期审查Logic Apps配置，以确保遵循安全最佳实践。升级到修复版本是最终的解决方案，请密切关注微软的安全公告以获取最新信息。