安全公告编号:cnta-2021-0026
2021年9月8日,国家信息安全漏洞共享平台(cnvd)收录了microsoft mshtml远程代码执行漏洞(cnvd-2021-69088,对应cve-2021-40444)。攻击者利用该漏洞,可在未授权的情况下远程执行代码。目前,漏洞利用细节已在小范围公开,微软公司暂未发布补丁修复该漏洞。cnvd建议受影响用户按照临时防范措施缓解漏洞攻击威胁。
一、漏洞情况分析
mshtml(又称trident)是微软windows操作系统internet explorer(ie)浏览器的排版组件。软件开发人员使用该组件,可以在应用中快速实现网页浏览功能。mshtml除应用于ie浏览器、ie内核浏览器外,还在office的word、excel和powerpoint文档中用来呈现web托管内容。
9月7日,微软公司发布了针对microsoft mshtml远程代码执行漏洞的紧急安全公告。攻击者利用该漏洞,通过精心构造包含可被加载的恶意 activex控件的microsoft office文件,并诱导受害者打开文档,从而触发此漏洞。未经身份验证的攻击者利用该漏洞,可获得受害者的当前用户权限,以该用户权限执行任意代码。
cnvd对该漏洞的综合评级为“高危”。
二、漏洞影响范围
漏洞影响的产品版本包括:
windows 7 for x64-based systems service pack 1
windows 7 for 32-bit systems service pack 1
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 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, 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 2022 (server core installation)
windows server 2022
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 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
三、漏洞处置建议
目前,微软公司暂未发布补丁程序修复该漏洞。cnvd建议受影响用户谨慎访问来源不明的office文件或网页链接,具备一定专业知识的用户可通过更改注册表配置禁用activex控件(建议操作前先做备份),并及时关注厂商的更新公告。
附:参考链接:
感谢cnvd技术组支撑单位——奇安信科技集团股份有限公司、北京天融信网络安全技术有限公司为本报告提供的凯发app官网的技术支持。