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微軟Windows列印多工緩衝處理器(Print Spooler)存在安全漏洞

2021 / 07 / 07
編輯部
微軟Windows列印多工緩衝處理器(Print Spooler)存在安全漏洞
研究人員發現Windows列印多工緩衝處理器(Print Spooler)服務內之RpcAddPrinterDriverEx函式因未正確限制非授權之存取行為,導致存在安全漏洞(CVE-2021-34527),遠端攻擊者可藉由此漏洞進而執行任意程式碼。

CVE-2021-34527​影響版本:
  • Windows 7 for 32-bit Systems Service Pack 1
  • Windows 7 for x64-based Systems Service Pack 1
  • Windows 8.1 for 32-bit systems
  • Windows 8.1 for x64-based systems
  • Windows RT 8.1
  • 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 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 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 21H1 for 32-bit Systems
  • Windows 10 Version 21H1 for ARM64-based Systems
  • Windows 10 Version 21H1 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, version 1909 (Server Core installation)
  • Windows Server, version 2004 (Server Core installation)
  • Windows Server, version 20H2 (Server Core Installation)

建議措施:
目前微軟官方尚未針對此漏洞釋出更新程式,所有Windows作業系統均受此漏洞影響,請各機關聯絡設備維護廠商或參考以下步驟採取緩解措施,並持續留意更新程式釋出情形:
  1. 透過網域主機派送群組原則物件(GPO),或在單機電腦上執行「本機群組原則編輯器」(gpedit.msc),將「電腦設定系統管理範本印表機允許列印多工緩衝處理器接受用戶端連線」設為「已停用」。
     
  2. 重新開機,或藉由「執行services.msc在Print Spooler服務上按右鍵點選重新啟動」以重新啟動Print Spooler服務,以使設定生效。

本文轉載自NCCST。