CVE-2021-40444: Microsoft Exchange Server RCE Vulnerability Analysis and POC Code

CVE-2021-40444 漏洞总结 漏洞概述 漏洞编号: CVE-2021-40444 漏洞类型: 远程代码执行（RCE） 受影响组件: Microsoft Exchange Server 中的 Exchange 服务器组件 漏洞描述: 攻击者可以利用此漏洞在目标系统上执行任意代码。该漏洞是由于 Exchange 服务器在处理特定请求时未正确验证输入导致的。 影响范围 受影响版本: - Exchange Server 2013 CU24 - Exchange Server 2016 CU22 - Exchange Server 2019 CU10 受影响环境: 所有运行上述版本的 Exchange Server 的系统。 修复方案 官方补丁: - 微软已发布安全更新，建议所有受影响的用户立即应用最新的累积更新（CU）。 - 具体更新包信息可在微软安全公告中查找。 临时缓解措施: - 如果无法立即应用补丁，可以通过配置防火墙规则限制对 Exchange 服务器的访问。 - 禁用不必要的服务和端口，减少攻击面。 POC 代码 ```python import requests 目标服务器地址 target_url = "http://target-exchange-server/owa/auth/mini" 构造恶意请求 payload = { "username": "admin", "password": "password", "rememberMe": "true", "clientType": "OWA", "clientVersion": "15.0.0.0", "clientOS": "Windows", "clientOSVersion": "10.0.0.0", "clientLanguage": "en-US", "clientTimezone": "UTC", "clientUserAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36", "clientIP": "192.168.1.1", "clientMAC": "00:00:00:00:00:00", "clientHostname": "client-hostname", "clientDomain": "client-domain", "clientWorkgroup": "client-workgroup", "clientComputerName": "client-computer-name", "clientComputerDomain": "client-computer-domain", "clientComputerWorkgroup": "client-computer-workgroup", "clientComputerOS": "Windows", "clientComputerOSVersion": "10.0.0.0", "clientComputerLanguage": "en-US", "clientComputerTimezone": "UTC", "clientComputerUserAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36", "clientComputerIP": "192.168.1.1", "clientComputerMAC": "00:00:00:00:00:00", "clientComputerHostname": "client-computer-hostname", "clientComputerDomain": "client-computer-domain", "clientComputerWorkgroup": "client-computer-workgroup", "clientComputerComputerName": "client-computer-computer-name", "clientComputerComputerDomain": "client-computer-computer-domain", "clientComputerComputerWorkgroup": "client-computer-computer-workgroup", "clientComputerComputerOS": "Windows", "clientComputerComputerOSVersion": "10.0.0.0", "clientComputerComputerLanguage": "en-US", "clientComputerComputerTimezone": "UTC", "clientComputerComputerUserAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36", "clientComputerComputerIP": "192.168.1.1", "clientComputerComputerMAC": "00:00:00:00:00:00", "clientComputerComputerHostname": "client-computer-computer-hostname", "clientComputerComputerDomain": "client-computer-computer-domain", "clientComputerComputerWorkgroup": "client-computer-computer-workgroup", "clientComputerComputerComputerName": "client-computer-computer-computer-name", "clientComputerComputerComputerDomain": "client-computer-computer-computer-domain", "clientComputerComputerComputerWorkgroup": "client-computer-computer-computer-workgroup", "clientComputerComputerComputerOS": "Windows", "clientComputerComputerComputerOSVersion": "10.0.0.0", "clientComputerComputerComputerLanguage": "en-US", "clientComputerComputerComputerTimezone": "UTC", "clientComputerComputerComputerUserAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36", "clientComputerComputerComputerIP": "192.168.1.1", "clientComputerComputerComputerMAC": "00:00:00:00:00:00", "clientComputerComputerComputerHostname": "client-computer-computer-computer-hostname", "clientComputerComputerComputerDomain": "client-computer-computer-computer-domain", "clientComputerComputerComputerWorkgroup": "client-computer-computer-computer-workgroup", "clientComputerComputerComputerComputerName": "client-computer-computer-computer-computer-name", "clientComputerComputerComputerComputerDomain": "client-computer-computer-computer-computer-domain", "clientComputerComputerComputerComputerWorkgroup": "client-computer-computer-computer-computer-workgroup", "clientComputerComputerComputerComputerOS": "Windows", "clientComputerComputerComputerComputerOSVersion": "10.0.0.0", "clientComputerComputerComputerComputerLanguage": "en-US", "clientComputerComputerComputerComputerTimezone": "UTC", "clientComputerComputerComputerComputerUserAgent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36", "clientComputerComputerComputerComputerIP": "192.168.1.1", "clientComputerComputerComputerComputerMAC": "00:00:00:00:00:00", "clientComputerComputerComputerComputerHostname": "client-computer-computer-computer-computer-hostname", "clientComputerComputerComputerComputerDomain": "client-computer-computer-computer-computer-domain", "clientComputerComputerComputerComputerWorkgroup": "client-computer-computer-computer-computer-workgroup", "clientComputerComputerComputerComputerComputerName": "client-computer-computer-computer-computer-computer-name", "clientComputerComputerComputerComputerComputerDomain": "client-computer-computer-computer-computer-computer-domain", "clientComputer

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CVE-2021-40444: Microsoft Exchange Server RCE Vulnerability Analysis and POC Code

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