AG公司云
【威胁通告】微软11月清静更新多个产品高危误差通告
2021-11-11
一. 误差概述
11月10日，AG公司科技CERT监测到微软宣布11月清静更新补丁，修复了55个清静问题，涉及Windows、Microsoft Office、Microsoft Visual Studio、Exchange Server等普遍使用的产品，其中包括权限提升、远程代码执行等高危误差类型。
本月微软月度更新修复的误差中，严重水平为要害（Critical）的误差有6个，主要（Important）误差有49个，其中包括6个0day误差：
MicrosoftExcel 清静功效绕过误差（CVE-2021-42292）
Microsoft Exchange Server 远程代码执行误差（CVE-2021-42321）
Microsoft RDP信息泄露误差（CVE-2021-38631/CVE-2021-41371）
3DViewer远程代码执行误差（CVE-2021-43208/CVE-2021-43209）
请相关用户尽快更新补丁举行防护，完整误差列表请参考附录。
AG公司远程清静评估系统（RSAS）已具备微软此次补丁更新中大部分误差的检测能力（包括CVE-2021-42292、CVE-2021-42321、CVE-2021-38631、CVE-2021-41371、CVE-2021-43208、CVE-2021-43209等高危误差），请相关用户关注AG公司远程清静评估系统插件升级包的更新，实时升级至V6.0R02F01.2505，官网链接：http://update.nsfocus.com/update/listRsasDetail/v/vulsys
参考链接：
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2021-Nov
二. 重点误差简述
凭证产品盛行度和误差主要性筛选出此次更新中包括影响较大的误差，请相关用户重点举行关注：
IE Chakra 剧本内存引擎损坏误差（CVE-2021-42279）：
由于Chakra剧本引擎界线保存过失，导致远程攻击者可以通过触发内存损坏，最终实现在目的系统上执行恣意代码。
官方通告链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42279
Microsoft Exchange Server 远程代码执行误差（CVE-2021-42321）：
由于Microsoft Exchange Server对cmdlet参数的验证缺乏，通过身份验证的远程攻击者可以在目的系统上运行恶意的cmdlet，最终导致恣意代码执行。该误差似乎在天府杯中被使用。
官方通告链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42321
Microsoft Dynamics 365远程代码执行误差（CVE-2021-42316）：
由于Microsoft Dynamics 365(外地安排)中的输入验证过失，经由身份验证的远程攻击者通过恶意请求，导致在目的系统上执行恣意代码。
官方通告链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42316
Microsoft Excel 清静功效绕过误差（CVE-2021-42292）：
Microsoft Excel中保存清静功效绕过误差，该误差允许外地用户翻开特制的文件时执行恣意代码，且被检测到保存在野使用。
官方通告链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42292
Microsoft Defender 远程代码执行误差（CVE-2021-42298）：
Defender 在扫描文件时会以最高权限在系统中运行。无需举行身份验证的远程攻击者通过诱导受害者翻开发送的恶意文件，甚至受害者在无需翻开或运行任何文件的情形下，会导致在目的系统上执行恣意代码。
官方通告链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42298
Remote Desktop Client 远程代码执行误差（CVE-2021-38666）：
在远程桌面毗连的情形下，当受害者的远程桌面客户端与攻击服务器毗连时，控制远程桌面服务器的攻击者可以在 RDP 客户端盘算机上触发该误差，从而在目的系统上以用户权限执行恣意代码。
官方通告链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38666
Microsoft RDP信息泄露误差（CVE-2021-38631/CVE-2021-41371）：
乐成使用该误差的攻击者可以审查易受攻击系统的RDP密码，造成清静隐患。
官方通告链接：
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38631
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-41371
三. 影响规模
以下为重点关注误差的受影响产品版本，其他误差影响产品规模请参阅官方通告链接。
|
误差编号 |
受影响产品版本 |
|
CVE-2021-42279 |
Windows Server, version 20H2 (Server Core Installation) Windows Server, version 2004 (Server Core installation) Windows Server 2022 Windows Server 2019 Windows Server 2016 Windows 11 for x64-based Systems Windows 11 for ARM64-based Systems Windows 10 for x64-based Systems Windows 10 for 32-bit 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 10 Version 20H2 for x64-based Systems Windows 10 Version 20H2 for ARM64-based Systems Windows 10 Version 20H2 for 32-bit Systems Windows 10 Version 2004 for x64-based Systems Windows 10 Version 2004 for ARM64-based Systems Windows 10 Version 2004 for 32-bit Systems Windows 10 Version 1909 for x64-based Systems Windows 10 Version 1909 for ARM64-based Systems Windows 10 Version 1909 for 32-bit Systems Windows 10 Version 1809 for x64-based Systems Windows 10 Version 1809 for ARM64-based Systems Windows 10 Version 1809 for 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows 10 Version 1607 for 32-bit Systems |
|
CVE-2021-42321 |
Microsoft Exchange Server 2019 Cumulative Update 11 Microsoft Exchange Server 2019 Cumulative Update 10 Microsoft Exchange Server 2016 Cumulative Update 22 Microsoft Exchange Server 2016 Cumulative Update 21 |
|
CVE-2021-42316 |
Microsoft Dynamics 365 (on-premises) version 9.1 Microsoft Dynamics 365 (on-premises) version 9.0 |
|
CVE-2021-42292 |
Microsoft Office LTSC for Mac 2021 Microsoft Office LTSC 2021 for 64-bit editions Microsoft Office LTSC 2021 for 32-bit editions Microsoft Office 2019 for Mac Microsoft Office 2019 for 64-bit editions Microsoft Office 2019 for 32-bit editions Microsoft Office 2016 (64-bit edition) Microsoft Office 2016 (32-bit edition) Microsoft Office 2013 Service Pack 1 (64-bit editions) Microsoft Office 2013 Service Pack 1 (32-bit editions) Microsoft Office 2013 RT Service Pack 1 Microsoft Excel 2016 (32-bit edition) Microsoft Excel 2013 Service Pack 1 (64-bit editions) Microsoft Excel 2013 Service Pack 1 (32-bit editions) Microsoft 365 Apps for Enterprise for 64-bit Systems Microsoft 365 Apps for Enterprise for 32-bit Systems |
|
CVE-2021-42298 |
Microsoft Malware Protection Engine |
|
CVE-2021-38666 |
Windows Server, version 20H2 (Server Core Installation) Windows Server, version 2004 (Server Core installation) Windows Server 2022 (Server Core installation) Windows Server 2022 Windows Server 2019 (Server Core installation) Windows Server 2019 Windows Server 2016 (Server Core installation) Windows Server 2016 Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 (Server Core installation) Windows Server 2012 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows RT 8.1 Windows 8.1 for x64-based systems Windows 8.1 for 32-bit systems Windows 7 for x64-based Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1 Windows 11 for ARM64-based Systems Windows 10 for x64-based Systems Windows 10 for 32-bit Systems Windows 10 Version 21H1 for x64-based Systems Windows 10 Version 21H1 for ARM64-based Systems Windows 10 Version 20H2 for x64-based Systems Windows 10 Version 20H2 for ARM64-based Systems Windows 10 Version 20H2 for 32-bit Systems Windows 10 Version 2004 for x64-based Systems Windows 10 Version 2004 for ARM64-based Systems Windows 10 Version 2004 for 32-bit Systems Windows 10 Version 1909 for x64-based Systems Windows 10 Version 1909 for ARM64-based Systems Windows 10 Version 1809 for x64-based Systems Windows 10 Version 1809 for ARM64-based Systems Windows 10 Version 1809 for 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows 10 Version 1607 for 32-bit Systems Remote Desktop client for Windows Desktop Windows Server, version 2004 (Server Core installation) Windows Server 2022 (Server Core installation) Windows Server 2022 Windows Server, version 20H2 (Server Core Installation) Windows Server 2019 (Server Core installation) Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 (Server Core installation) Windows Server 2012 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (ServerCore installation) Windows Server 2008 for 32-bit Systems Service Pack 2 Windows Server 2016 (Server Core installation) Windows Server 2016 |
|
CVE-2021-38631 CVE-2021-41371 |
Windows Server, version 20H2 (Server Core Installation) Windows Server, version 2004 (Server Core installation) Windows Server 2022 (Server Core installation) Windows Server 2022 Windows Server 2019 (Server Core installation) Windows Server 2019 Windows Server 2016 (Server Core installation) Windows Server 2016 Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 (Server Core installation) Windows Server 2012 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (ServerCore installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows RT 8.1 Windows 8.1 for x64-based systems Windows 8.1 for 32-bit systems Windows 7 for x64-based Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1 Windows 11 for x64-based Systems Windows 11 for ARM64-based Systems Windows 10 for x64-based Systems Windows 10 for 32-bit 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 10 Version 20H2 for x64-based Systems Windows 10 Version 20H2 for ARM64-based Systems Windows 10 Version 2004 for x64-based Systems Windows 10 Version 2004 for 32-bit Systems Windows 10 Version 1909 for x64-based Systems Windows 10 Version 1909 for ARM64-based Systems Windows 10 Version 1909 for 32-bit Systems Windows 10 Version 1809 for x64-based Systems Windows 10 Version 1809 for ARM64-based Systems Windows 10 Version 1809 for 32-bit Systems Windows 10 Version 1607 for x64-based Systems Windows 10 Version 1607 for 32-bit Systems |
四. 误差防护
4.1 补丁更新
现在微软官方已针对受支持的产品版本宣布了修复以上误差的清静补丁，强烈建议受影响用户尽快装置补丁举行防护，官方下载链接：
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2021-Nov
注：由于网络问题、盘算机情形问题等缘故原由，Windows Update的补丁更新可能泛起失败。用户在装置补丁后，应实时检查补丁是否乐成更新。
右键点击Windows图标，选择“设置(N)”，选择“更新和清静”-“Windows更新”，审查该页面上的提醒信息，也可点击“审查更新历史纪录”审查历史更新情形。
针对未乐成装置的更新，可点击更新名称跳转到微软官方下载页面，建议用户点击该页面上的链接，转到“Microsoft更新目录”网站下载自力程序包并装置。
