Microsoft Windows Update Client 特权提升漏洞

CVE编号

CVE-2021-38634

利用情况

暂无

补丁情况

N/A

披露时间

2021-09-14

漏洞描述

Microsoft Windows Update Assistant是美国微软（Microsoft）公司的一款系统更新工具。
microsoft Windows Update存在权限许可和访问控制问题漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 1809 for ARM64-based Systems,Windows Server 2019,Windows Server 2019 (Server Core installation),Windows 10 Version 1909 for 32-bit Systems,Windows 10 Version 1909 for x64-based Systems,Windows 10 Version 1909 for ARM64-based Systems,Windows 10 Version 21H1 for x64-based Systems,Windows 10 Version 21H1 for ARM64-based Systems,Windows 10 Version 21H1 for 32-bit Systems,Windows Server 2022,Windows Server 2022 (Server Core installation),Windows 10 Version 2004 for 32-bit Systems,Windows 10 Version 2004 for ARM64-based Systems,Windows 10 Version 2004 for x64-based Systems,Windows Server, version 2004 (Server Core installation),Windows 10 Version 20H2 for x64-based Systems,Windows 10 Version 20H2 for 32-bit Systems,Windows 10 Version 20H2 for ARM64-based Systems,Windows Server, version 20H2 (Server Core Installation),Windows 10 for 32-bit Systems,Windows 10 for x64-based Systems,Windows 10 Version 1607 for 32-bit Systems,Windows 10 Version 1607 for x64-based Systems,Windows Server 2016,Windows Server 2016 (Server Core installation)

解决建议

目前厂商已发布升级补丁以修复漏洞，补丁获取链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38634

参考链接
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38634
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38634
https://vigilance.fr/vulnerability/Microsoft-Windows-vulnerabilities-of-Septe...
https://www.cybersecurity-help.cz/vdb/SB2021091437
https://www.zerodayinitiative.com/advisories/ZDI-21-1075/

CVSS3评分 7.8

• 攻击路径 本地
• 攻击复杂度 低
• 权限要求 低
• 影响范围 未更改
• 用户交互 无
• 可用性 高
• 保密性 高
• 完整性 高

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-ID 漏洞类型 CWE-269 特权管理不恰当