一、漏洞公告
微软官方发布了12月安全更新公告，包含了微软家族多个软件的安全更新补丁，包括：Microsoft Office 、 Windows Hyper-V 、 Windows Kernel 、 Microsoft Edge(Chromium-based)、Windows PowerShell等多个CVE安全漏洞补丁。请相关用户及时更新对应补丁修复漏洞。
参考链接： https://msrc.microsoft.com/update-guide/releaseNote/2022-Dec
根据公告，此次更新中修复的Windows客户端服务器运行时子系统(CSRSS)特权提升漏洞（CVE-2022-44673）、Windows Bluetooth Driver特权提升漏洞（CVE-2022-44675）、Windows Kernel特权提升漏洞（CVE-2022-44683）、Windows SmartScreen安全功能绕过漏洞（CVE-2022-44698）风险较大。其中CVE-2022-44698 Windows SmartScreen安全功能绕过漏洞存在在野利用，建议尽快安装安全更新补丁或采取临时缓解措施加固系统。
参考链接： https://msrc.microsoft.com/update-guide/vulnerability/
二、影响范围
Windows客户端服务器运行时子系统(CSRSS)特权提升漏洞(CVE-2022-44673）
Windows 10 for 32-bit Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 22H2 for 32-bit Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 8.1 for 32-bit systems
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Bluetooth Driver特权提升漏洞（CVE-2022-44675）
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 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 20H2 for 32-bit Systems
Windows 10 Version 20H2 for ARM64-based Systems
Windows 10 Version 20H2 for x64- based Systems
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 21H1 for x64-based Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 22H2 for 32-bit Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 10 Version 22H2 for x64-based Systems
Windows 11 for ARM64-based Systems
Windows 11 for x64- based Systems
Windows 11 Version 22H2 for ARM64-based Systems
Windows 11 Version 22H2 for x64-based Systems
Windows 7 for 32-bit Systems Service Pack 1
Windows 7 for x64-based Systems Service Pack 1
Windows 8.1 for 32-bit systems
Windows 8.1 for x64-based systems
Windows RT 8.1
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2012
Windows Server 2012 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)
Windows Server 2016
Windows Server 2016 (Server Core installation)
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows Server 2022 (Server Core installation)
Windows Server 2022 Datacenter: Azure Edition
Windows Kernel特权提升漏洞（CVE-2022-44683）
Windows Server 2012 R2 (Server Core installation)
Windows Server 2012 R2 (Server Core installation)
Windows Server 2012 R2
Windows Server 2012 R2
Windows Server 2012 (Server Core installation)
Windows Server 2012 (Server Core installation)
Windows Server 2012
Windows Server 2012
Windows RT 8.1
Windows 8.1 for x64-based systems
Windows 8.1 for x64-based systems
Windows 8.1 for 32-bit systems
Windows 8.1 for 32-bit systems
Windows Server 2016 (Server Core installation)
Windows Server 2016
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 for x64-based Systems
Windows 10 for 32-bit Systems
Windows 10 Version 22H2 for 32-bit Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 10 Version 22H2 for x64-based Systems
Windows 11 Version 22H2 for x64- based Systems
Windows 11 Version 22H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 11 for ARM64-based Systems
Windows 11 for x64-based 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 Server 2022 Datacenter: Azure Edition
Windows Server 2022 (Server Core installation)
Windows Server 2022
Windows 10 Version 21H1 for 32- bit Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2019 (Server Core installation)
Windows Server 2019
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
Windows SmartScreen安全功能绕过漏洞（CVE-2022-44698）
Windows Server 2016
Windows 10 Version 1607 for x64-based Systems
Windows 10 Version 1607 for 32-bit Systems
Windows 10 Version 22H2 for 32-bit Systems
Windows 10 Version 22H2 for ARM64-based Systems
Windows 10 Version 22H2 for x64-based Systems
Windows 10 Version 21H2 for x64-based Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for 32-bit Systems
Windows 11 for ARM64-based Systems
Windows 11 for x64-based 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 Server 2022 Datacenter: Azure Edition
Windows Server 2022
Windows 10 Version 21H1 for 32-bit Systems
Windows 10 Version 21H1 for ARM64-based Systems
Windows 10 Version 21H1 for x64-based Systems
Windows Server 2019
Windows 10 Version 1809 for ARM64-based Systems
Windows 10 Version 1809 for x64-based Systems
Windows 10 Version 1809 for 32-bit Systems
12月安全公告列表，包含的其他漏洞快速阅读指引（非全部）：
https://msrc.microsoft.com/update-guide/releaseNote/2022-Dec
三、漏洞描述
Windows客户端服务器运行时子系统(CSRSS)特权提升漏洞（CVE-2022-44673）：
Windows客户端服务器运行时子系统(CSRSS)中存在一处特权提升漏洞（CVE-2022- 44673），本地攻击者可通过在目标系统上运行恶意程序来利用此漏洞，成功利用此漏洞可在目标系统上以SYSTEM权限执行任意代码。
Windows Bluetooth Driver特权提升漏洞（CVE-2022-44675）：
Windows Bluetooth Driver中存在一处特权提升漏洞（CVE-2022-44675），本地攻击者可通过在目标系统上运行恶意程序来利用此漏洞，成功利用此漏洞可在目标系统上以SYSTEM权限执行任意代码。
Windows Kernel特权提升漏洞（CVE-2022-44683）：
Windows Kernel中存在一处特权提升漏洞（CVE-2022-44683），本地攻击者可通过在目标系统上运行恶意程序来利用此漏洞，成功利用此漏洞可在目标系统上以SYSTEM权限执行任意代码。
Windows SmartScreen安全功能绕过漏洞（CVE-2022-44698）：
Windows SmartScreen组件中存在一处安全功能绕过漏洞（CVE-2022-44698），攻击者可通过构造特定的文件来利用这个漏洞，成功利用此漏洞可使被下载的文件绕过文件安全保护功能。
四、缓解措施
高危： 目前漏洞细节虽未公开，但是恶意攻击者可以通过补丁对比方式分析出漏洞触发点，并进一步开发漏洞利用代码，Microsoft已发布相关安全更新，鉴于漏洞的严重性，建议受影响的用户尽快修复。安恒信息将在产品的例行更新中加入相关攻击检测和防护能力。
（一）Windows 更新：
自动更新： Microsoft Update默认启用，当系统检测到可用更新时，将会自动下载更新并在下一次启动时安装。
手动更新： 1、点击“开始菜单”或按Windows快捷键，点击进入“设置” 2、选择“更新和安全”，进入“Windows更新”（Windows 8、Windows 8.1、Windows Server 2012以及Windows Server 2012 R2可通过控制面板进入“Windows更新”，具体步骤为“控制面板”->“系统和安全”->“Windows更新”） 3、选择“检查更新”，等待系统将自动检查并下载可用更新。 4、重启计算机，安装更新系统重新启动后，可通过进入“Windows更新”->“查看更新历史记录”查看是否成功安装了更新。
（二）目前微软针对支持的产品已发布升级补丁修复了上述漏洞，请用户参考官方通告及时下载更新补丁。补丁获取：https://msrc.microsoft.com/update-guide/vulnerability
来源：微软官方
/
网络安全