轉知:【漏洞預警】微軟Windows TCP/IP存在安全漏洞(CVE-2021-24074、CVE-2021-24094及CVE-2021-24086),允許攻擊者遠端執行任意程式碼或造成服務阻斷,請儘速確認並進行更新!
教育機構ANA通報平台 |
發佈編號 |
TACERT-ANA-2021021810023838 |
發佈時間 |
2021-02-18 10:08:39 |
事故類型 |
ANA-漏洞預警 |
發現時間 |
2021-02-18 10:08:39 |
影響等級 |
中 |
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[主旨說明:]【漏洞預警】微軟Windows TCP/IP存在安全漏洞(CVE-2021-24074、CVE-2021-24094及CVE-2021-24086),允許攻擊者遠端執行任意程式碼或造成服務阻斷,請儘速確認並進行更新! |
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[內容說明:] 轉發 行政院國家資通安全會報技術服務中心 資安訊息警訊 NISAC-ANA-202102-0902
研究人員發現微軟Windows TCP/IP存在安全漏洞 CVE-2021-24074、CVE-2021-24094及CVE-2021-24086,可能遭受以下攻擊:
1. 遠端攻擊者可發送特製封包,利用CVE-2021-24074或CVE-2021-24094執行任意程式碼。 2. 遠端攻擊者可發送特製封包,利用CVE-2021-24086造成服務阻斷。
情資分享等級: WHITE(情資內容為可公開揭露之資訊) |
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[影響平台:] 受影響之Windows作業系統包含用戶端及伺服器版本,版本如下: Windows Server, version 20H2 (Server Core Installation) Windows 10 Version 20H2 for ARM64-based Systems Windows 10 Version 20H2 for 32-bit Systems Windows 10 Version 20H2 for x64-based Systems Windows Server, version 2004 (Server Core installation) Windows 10 Version 2004 for x64-based Systems Windows 10 Version 2004 for ARM64-based Systems Windows 10 Version 2004 for 32-bit Systems Windows Server, version 1909 (Server Core installation) Windows 10 Version 1909 for ARM64-based Systems Windows 10 Version 1909 for x64-based Systems Windows 10 Version 1909 for 32-bit Systems Windows Server 2012 R2 (Server Core installation) Windows Server 2012 R2 Windows Server 2012 (Server Core installation) Windows Server 2012 Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Windows Server 2008 R2 for x64-based Systems Service Pack 1 Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) Windows Server 2008 for x64-based Systems Service Pack 2 Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) Windows Server 2008 for 32-bit Systems Service Pack 2 Windows RT 8.1 Windows 8.1 for x64-based systems Windows 8.1 for 32-bit systems Windows 7 for x64-based Systems Service Pack 1 Windows 7 for 32-bit Systems Service Pack 1 Windows Server 2016 (Server Core installation) Windows Server 2016 Windows 10 Version 1607 for x64-based Systems Windows 10 Version 1607 for 32-bit Systems Windows 10 for x64-based Systems Windows 10 for 32-bit Systems Windows Server 2019 (Server Core installation) Windows Server 2019 Windows 10 Version 1809 for ARM64-based Systems Windows 10 Version 1809 for x64-based Systems Windows 10 Version 1809 for 32-bit Systems Windows 10 Version 1803 for ARM64-based Systems Windows 10 Version 1803 for x64-based Systems Windows 10 Version 1803 for 32-bit Systems |
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[建議措施:] 1.目前微軟官方已針對此漏洞釋出更新程式,請各機關聯絡設備維護廠商或參考以下建議進行更新: (1).https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24094 (2).https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24074 (3).https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24086
2.若無法立即更新,可參考官網公告採取緩解措施,並建議經測試再做調整。 (1)CVE-2021-24074執行官網因應措施中之PowerShell指令,停用IPv4之鬆散來源路由,防止攻擊者進行弱點利用,參考連結如下:https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24074 (2)CVE-2021-24086與CVE-2021-24094執行官網因應措施中之PowerShell指令,於邊界網路設備上停用IPv6分段,防止攻擊者進行弱點利用,參考連結如下:https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24086https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24094 |
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[參考資料:] 1. https://msrc-blog.microsoft.com/2021/02/09/multiple-security-updates-affecting-tcp-ip/ 2. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24094 3. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24074 4. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24086 5. https://unit42.paloaltonetworks.com/cve-2021-24074-patch-tuesday/ |
(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。 |
教育機構資安通報應變小組 |
參考連結:https://www.tcrc.edu.tw/new/new-list/windows-tcp-ip-cve-2021-24074-cve-2021-24094-cve-2021-24086