Windows Server Backup (WSB) 是 Windows 上的备份和 Windows 恢复工具。
美创安全实验室监测到一则Windows Backup Service权限提升漏洞的信息，漏洞编号：CVE-2023-21752，漏洞等级：严重。该漏洞存在于Windows Server Backup (WSB)中，经过身份认证的攻击者可利用此漏洞提升至 SYSTEM 权限。
鉴于此漏洞影响较大，且 PoC 及 EXP 已在互联网公开，建议客户尽快做好自查，及时更新至最新版本。
受影响版本：
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Windows 7 for 32-bit Systems Service Pack 1 -
Windows 10 for 32-bit Systems -
Windows 10 Version 1607 for x64-based Systems -
Windows 10 for x64-based Systems -
Windows 7 for x64-based Systems Service Pack 1 -
Windows 10 Version 1809 for x64-based Systems -
Windows 10 Version 1607 for 32-bit Systems -
Windows 10 Version 1809 for ARM64-based Systems -
Windows 10 Version 1809 for 32-bit Systems -
Windows 10 Version 20H2 for ARM64-based Systems -
Windows 10 Version 20H2 for 32-bit Systems -
Windows 10 Version 20H2 for x64-based Systems -
Windows 11 Version 22H2 for x64-based Systems -
Windows 10 Version 21H2 for x64-based Systems -
Windows 10 Version 22H2 for x64-based Systems -
Windows 10 Version 21H2 for 32-bit Systems -
Windows 11 version 21H2 for ARM64-based Systems -
Windows 11 version 21H2 for x64-based Systems -
Windows 10 Version 21H2 for ARM64-based Systems -
Windows 10 Version 22H2 for 32-bit Systems -
Windows 11 Version 22H2 for ARM64-based Systems -
Windows 10 Version 22H2 for ARM64-based Systems
及时进行Microsoft Windows版本更新并且保持Windows自动更新开启。
Windows server / Windows 检测并开启Windows自动更新流程如下：
原文始发于微信公众号（第59号）：【漏洞通告】 Windows Backup Service 权限提升漏洞（CVE-2023-21752）
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