描述:
Microsoft 發布了安全性更新以應對數個影響 Microsoft 產品或元件的多個漏洞。有關安全性更新的列表,請參考以下網址:
https://msrc.microsoft.com/update-guide/en-us/releaseNote/2021-Aug
有報告指在 Microsoft Windows 10 及某些 Windows Server 版本的一個權限提升漏洞 (CVE-2021-36948)正受到攻擊,Microsoft Windows 及 Server 中的多個漏洞 (CVE-2021-36936、CVE-2021-36942 及 CVE-2021-36947) 亦有很高受到網絡攻擊的風險。系統管理員應立即為受影響的系統安裝修補程式,以減低受到網絡攻擊的風險。
受影響的系統:
- Microsoft Windows 7, 8.1, RT 8.1, 10
- Microsoft Windows Server 2008, 2008 R2, 2012, 2012 R2, 2016, 2019
- Microsoft Windows Server, version 2004, version 20H2
- Microsoft Office 2019, 2019 for Mac
- Microsoft 365 Apps for Enterprise
- Microsoft SharePoint Enterprise Server 2013, 2016
- Microsoft SharePoint Server 2019
- Microsoft Visual Studio 2017, 2019, 2019 for Mac version 8.10
- Microsoft Azure Active Directory Connect, Provisioning Agent
- Microsoft Azure CycleCloud 7.9.10, 8.2.0
- Microsoft Azure Sphere
- Microsoft Dynamics 365 (on-premises) version 9.0, version 9.1
- Microsoft Dynamics 365 Business Central 2019, 2020
- Microsoft Dynamics NAV 2017, 2018
- Microsoft Malware Protection Engine
- .NET 5.0
- .NET Core 2.1, 3.1
- ASP.NET Core 2.1, 3.1, 5.0
- Remote Desktop client for Windows Desktop
- Windows Update Assistant
影響:
成功利用這些漏洞可以導致遠端執行程式碼、權限提升、泄漏資訊、服務受阻斷及仿冒詐騙,視乎攻擊者利用哪個漏洞而定。
建議:
受影響產品的修補程式可在 Windows Update 或 Microsoft Update Catalog 獲取。受影響系統的用戶應遵從產品供應商的建議,立即採取行動以降低風險。
進一步資訊:
- https://msrc.microsoft.com/update-guide/en-us/releaseNote/2021-Aug
- https://www.hkcert.org/tc/security-bulletin/microsoft-monthly-security-update-august-2021
- https://us-cert.cisa.gov/ncas/current-activity/2021/08/10/microsoft-releases-august-2021-security-updates
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26423 (to CVE-2021-26426)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26428 (to CVE-2021-26433)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33762
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34471
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34478
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34480
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34483 (to CVE-2021-34487)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34524
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34530
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34532 (to CVE-2021-34537)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36926
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36927
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36932
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36933
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36936 (to CVE-2021-36938)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36940 (to CVE-2021-36943)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-36945 (to CVE-2021-36950)