微軟Windows TCP/IP堆疊存在安全漏洞(CVE-2020-16898)，允許攻擊者遠端執行任意程式碼，請儘速確認並進行更新

資安漏洞

內容說明：

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。

 

目前已知影響平台如下：

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功能，防止攻擊者進行弱點利用。

 

參考資料：

1. https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16898
2. https://vuldb.com/?id.162598