Windows Print Spooler 远程代码执行漏洞 (CVE-2021-34527)
日期:2021-07-02 08:42:07  发布人:教育信息化建设处  浏览量:453

组件介绍

Print Spooler是打印后台处理服务,即管理所有本地和网络打印队列及控制所有打印工作。如果此服务被停用,本地计算机上的打印将不可用。如果此服务被禁用,任何依赖于它的服务将无法启用。Spooler是为了提高文件打印效率,将多个请求打印的文档统一进行保存和管理,先将要打印的文件拷贝到内存,待打印机空闲后,再将数据送往打印机处理。

漏洞描述

2021年7月2日,微软将CVE-2021-34527分配给Windows Print Spooler 远程代码执行漏洞。漏洞威胁等级:高危。

当Windows Print Spooler 服务不正确的执行特权文件操作时,存在远程代码执行的风险。攻击者通过一个低权限账户,利用该漏洞绕过安全检查,从而可以使用 System 权限运行任意代码,进而控制该服务器。

2021年7月7日,微软发布漏洞对应的补丁。

影响范围

Windows系统作为当下最流行、使用最为广泛的操作系统,在全球各个地区都有相当大的使用量,中美两国是使用Windows系统最多的两个国家。

目前受影响的Windows版本:

Windows Server 2019 (Server Core installation)

Windows Server 2019

Windows Server 2016 (Server Core installation)

Windows Server 2016

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 Server, version 2004 (Server Core installation)

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 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, 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 10 Version 2004 for x64-based Systems

Windows 10 Version 2004 for ARM64-based Systems

Windows 10 Version 2004 for 32-bit 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 10 Version 1909 for ARM64-based Systems

Windows 10 Version 1909 for x64-based Systems

Windows 10 Version 1909 for 32-bit Systems

Windows 10 Version 1809 for ARM64-based Systems

Windows 10 Version 1809 for x64-based Systems

Windows 10 Version 1809 for 32-bit Systems

如何检测组件系统版本

Win + r 输入 winver 即可查看

官方修复建议

当前官方已发布大部分受影响版本对应的补丁,建议受影响的用户及时更新,补丁未覆盖的用户请实时关注官方链接。 

官方链接:https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34527


 

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