教育機構ANA通報平台

發佈編號

TACERT-ANA-2021091011092929

發佈時間

2021-09-10 11:03:30

事故類型

ANA-漏洞預警

發現時間

2021-09-09 15:45:30

影響等級

中

[主旨說明:]【漏洞預警】微軟Windows之MSHTML引擎存在安全漏洞(CVE-2021-40444)，允許攻擊者遠端執行任意程式碼，請儘速確認並進行防護補強

[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-202109-0479

研究人員發現微軟Windows內之瀏覽器排版引擎MSHTML存在安全漏洞(CVE-2021-40444)，MSHTML用於微軟瀏覽器與Office應用程式中，攻擊者可誘騙使用者開啟含有惡意ActiveX之Office文件，進而載入瀏覽器引擎並瀏覽惡意網頁，利用此漏洞遠端執行任意程式碼。

情資分享等級: WHITE(情資內容為可公開揭露之資訊)

[影響平台:]

l  Windows 7 for 32-bit Systems Service Pack 1

l  Windows 7 for x64-based Systems Service Pack 1

l  Windows 8.1 for 32-bit systems Windows 8.1 for x64-based systems

l  Windows RT 8.1 Windows 10 for 32-bit Systems

l  Windows 10 for x64-based Systems

l  Windows 10 Version 1607 for 32-bit Systems

l  Windows 10 Version 1607 for x64-based Systems

l  Windows 10 Version 1809 for 32-bit Systems

l  Windows 10 Version 1809 for ARM64-based Systems

l  Windows 10 Version 1809 for x64-based Systems

l  Windows 10 Version 1909 for 32-bit Systems

l  Windows 10 Version 1909 for ARM64-based Systems

l  Windows 10 Version 1909 for x64-based Systems

l  Windows 10 Version 2004 for 32-bit Systems

l  Windows 10 Version 2004 for ARM64-based Systems

l  Windows 10 Version 2004 for x64-based Systems

l  Windows 10 Version 20H2 for 32-bit Systems

l  Windows 10 Version 20H2 for ARM64-based Systems

l  Windows 10 Version 20H2 for x64-based Systems

l  Windows 10 Version 21H1 for 32-bit Systems

l  Windows 10 Version 21H1 for ARM64-based Systems

l  Windows 10 Version 21H1 for x64-based Systems

l  Windows Server 2008 for 32-bit Systems Service Pack 2

l  Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)

l  Windows Server 2008 for x64-based Systems Service Pack 2

l  Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)

l  Windows Server 2008 R2 for x64-based Systems Service Pack 1

l  Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

l  Windows Server 2012

l  Windows Server 2012 (Server Core installation)

l  Windows Server 2012 R2

l  Windows Server 2012 R2 (Server Core installation)

l  Windows Server 2016

l  Windows Server 2016 (Server Core installation)

l  Windows Server 2019

l  Windows Server 2019 (Server Core installation)

l  Windows Server 2022

l  Windows Server 2022 (Server Core installation)

l  Windows Server, version 2004 (Server Core installation)

l  Windows Server, version 20H2 (Server Core Installation)

[建議措施:]

微軟預定於9月份安全性更新中釋出此漏洞之更新程式，請各機關聯絡設備維護廠商或參考以下建議措施：

1.避免開啟來路不明之Office文件。

2.部署政府組態基準(GCB)設定。

3.持續留意更新程式釋出進度，更新程式釋出前可參考微軟官方網頁(https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40444)，評估是否採取緩解措施。

[參考資料:]

1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-40444

2. https://www.ithome.com.tw/news/146584

3. https://docs.microsoft.com/zh-tw/microsoft-365/security/office-365-security/install-app-guard?view=o365-worldwide

(此通報僅在於告知相關資訊，並非為資安事件)，如果您對此通報的內容有疑問或有關於此事件的建議，歡迎與我們連絡。

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