【資安漏洞預警】微軟Windows作業系統與應用程式存在多個安全漏洞，請儘速確認並進行更新！

• 主旨說明：【資安漏洞預警】微軟Windows作業系統與應用程式存在多個安全漏洞，允許攻擊者遠端執行任意程式碼，請儘速確認並進行更新！

• 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。
• 影響平台:
  1. 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)
  2. 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)
  3. 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
  4. 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

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