基隆市政府教育處 Department of Education
Keelung City Government

[內容說明:]
轉發 國家資安資訊分享與分析中心 資安訊息警訊 NISAC-ANA-202111-0417

研究人員發現Windows作業系統與應用程式存在多個安全漏洞(CVE-2021-26443、38666、42292及42321)，遠端攻擊者可藉由漏洞進而執行任意程式碼。

情資分享等級: WHITE(情資內容為可公開揭露之資訊)

此訊息僅發送到「區縣市網路中心」，煩請貴單位協助公告或轉發

[影響平台:]
一、CVE-2021-26443：
● Windows 10 Version 1809 for x64-based Systems
● Windows 10 Version 1909 for x64-based Systems
● Windows 10 Version 2004 for x64-based Systems
● Windows 10 Version 20H2 for x64-based Systems
● Windows 10 Version 21H1 for x64-based Systems
● Windows 11 for x64-based Systems
● Windows Server 2019
● Windows Server 2019 (Server Core installation)
● Windows Server 2022
● Windows Server 2022 (Server Core installation)
● Windows Server, version 2004 (Server Core installation)
● Windows Server, version 20H2 (Server Core Installation)

二、CVE-2021-38666：
● Remote Desktop client for Windows Desktop
● 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 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 1909 for 32-bit Systems
● Windows 10 Version 1909 for ARM64-based Systems
● Windows 10 Version 1909 for x64-based Systems
● 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 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 11 for ARM64-based Systems
● Windows 11 for x64-based 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 Server 2008 for x64-based Systems Service Pack 2
● Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)
● 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, version 2004 (Server Core installation)
● Windows Server, version 20H2 (Server Core Installation)

三、CVE-2021-42292：
● Microsoft 365 Apps for Enterprise for 32-bit Systems
● Microsoft 365 Apps for Enterprise for 64-bit Systems
● Microsoft Excel 2013 RT Service Pack 1
● Microsoft Excel 2013 Service Pack 1 (32-bit editions)
● Microsoft Excel 2013 Service Pack 1 (64-bit editions)
● Microsoft Excel 2016 (32-bit edition)
● Microsoft Excel 2016 (64-bit edition)
● Microsoft Office 2013 RT Service Pack 1
● Microsoft Office 2013 Service Pack 1 (32-bit editions)
● Microsoft Office 2013 Service Pack 1 (64-bit editions)
● Microsoft Office 2016 (32-bit edition)
● Microsoft Office 2016 (64-bit edition)
● Microsoft Office 2019 for 32-bit editions
● Microsoft Office 2019 for 64-bit editions
● Microsoft Office 2019 for Mac
● Microsoft Office LTSC 2021 for 32-bit editions
● Microsoft Office LTSC 2021 for 64-bit editions
● Microsoft Office LTSC for Mac 2021

四、CVE-2021-42321：
● Microsoft Exchange Server 2016 Cumulative Update 21
● Microsoft Exchange Server 2016 Cumulative Update 22
● Microsoft Exchange Server 2019 Cumulative Update 10
● Microsoft Exchange Server 2019 Cumulative Update 11

[建議措施:]
目前微軟官方已針對這些漏洞釋出更新程式，請各機關聯絡維護廠商或參考以下網址進行更新：

1.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-26443

2.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38666

3.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-42292

4.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-42321

[參考資料:]
1. https://www.ithome.com.tw/news/147751
2. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-26443
3. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-38666
4. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-42292
5. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-42321