[內容說明:]

轉發 國家資安資訊分享與分析中心 NISAC-ANA-202305-0234

微軟於5月份安全性更新中，共修補3個零時差漏洞與2個CVSS為9.8分高風險漏洞，請儘速確認並進行更新或評估採取緩解措施。 ​​​​​​​

1.CVE-2023-29325(CVSS 8.1)為遠端執行任意程式碼漏洞，攻擊者可寄送刻意變造之電子郵件，當受駭者使用Outlook開啟或預覽惡意RTF文件時，便會觸發漏洞進而達到遠端執行任意程式碼。

2.CVE-2023-29336(CVSS 7.8)為權限擴張漏洞，已遭駭客利用，發生於Win32K驅動程式，允許已通過身分鑑別之攻擊者，可透過本漏洞取得系統權限。

3.CVE-2023-24932(CVSS 6.7)為安全功能繞過漏洞，已遭駭客利用，允許已取得本機管理權限之攻擊者，可透過本漏洞繞過安全開機(Windows Secure Boot)檢查機制，規避偵測或企圖使惡意程式進駐於系統中。

4.CVE-2023-24941(CVSS 9.8)為遠端執行任意程式碼漏洞，允許未經身分鑑別之遠端攻擊者，針對網路檔案系統(Network File System, NFS)發送偽造請求，進而達到遠端執行任意程式碼。

5.CVE-2023-24943(CVSS 9.8)為遠端執行任意程式碼漏洞，可使攻擊者藉由發送惡意檔案至啟用訊息佇列服務(Message Queuing Service)之實際通用多播(Pragmatic General Multicast)伺服器環境，進而達到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:]

● 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 20H2 for 32-bit Systems

● Windows 10 Version 20H2 for ARM64-based Systems

● Windows 10 Version 20H2 for x64-based Systems

● Windows 10 Version 21H2 for 32-bit Systems

● Windows 10 Version 21H2 for ARM64-based Systems

● Windows 10 Version 21H2 for x64-based Systems

● Windows 10 Version 22H2 for 32-bit Systems

● Windows 10 Version 22H2 for ARM64-based Systems

● Windows 10 Version 22H2 for x64-based Systems

● Windows 11 version 21H2 for ARM64-based Systems

● Windows 11 version 21H2 for x64-based Systems

● Windows 11 Version 22H2 for ARM64-based Systems

● Windows 11 Version 22H2 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)

[建議措施:]

目前微軟官方已針對弱點釋出修復版本，各機關可聯絡系統維護廠商進行修補，或參考以下連結進行緩解與取得修補程式：

1.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-29325

2.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-29336

3.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24932

4.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24941

5.https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24943

[參考資料:]
1. https://www.zerodayinitiative.com/blog/2023/5/8/the-may-2023-security-update-review
2. https://www.ithome.com.tw/news/156822
3. https://msrc.microsoft.com/update-guide/releaseNote/2023-May
4. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-29325
5. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-29336
6. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24932
7. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24941
8. https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2023-24943