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[漏洞預警]微軟Windows TCP/IP堆疊存在安全漏洞(CVE-2020-16898),請儘速確認並進行更新


發佈日期
20-10-16
公告人員
曾國旭

[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-202010-0502
研究人員發現微軟Windows TCP/IP堆疊(TCP/IP stack)未能正確處理ICMPv6之路由器公告(Router Advertisement)封包,導致存在安全漏洞(CVE-2020-16898),遠端攻擊者可藉由發送特製的ICMPv6路由器公告封包,利用此漏洞進而執行任意程式碼。

[影響平台:]
受影響Windows版本如下:
Windows 10 Version 1709 for 32-bit Systems;
Windows 10 Version 1709 for ARM64-based Systems;
Windows 10 Version 1709 for x64-based Systems;
Windows 10 Version 1803 for 32-bit Systems;
Windows 10 Version 1803 for ARM64-based Systems;
Windows 10 Version 1803 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 1903 for 32-bit Systems;
Windows 10 Version 1903 for ARM64-based Systems;
Windows 10 Version 1903 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 Server 2019;
Windows Server 2019 (Server Core installation);
Windows Server, version 1903 (Server Core installation);
Windows Server, version 1909 (Server Core installation);
Windows Server, version 2004 (Server Core installation);

[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:https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898
2.如無法更新,亦可於Windows 1709以上版本環境中,執行「netsh int ipv6 set int *INTERFACENUMBER* rabaseddnsconfig=disable」之PowerShell指令,藉由停用ICMPv6 RDNSS,防止攻擊者進行弱點利用。

[參考資料:]
1. https://portalmsrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898
2. https://vuldb.com/?id.162598