绿盟科技NSFOCUS安全漏洞系统

安全研究

安全漏洞

Microsoft .NET Framework拒绝服务漏洞（CVE-2021-24111）

发布日期：2021-02-09
更新日期：2021-02-10

受影响系统：

Microsoft .NET Framework 3.5 on Windows Server 20H2 (Server
Microsoft .NET Framework 3.5 on Windows Server 2019 (Server
Microsoft .NET Framework 3.5 on Windows Server 2019
Microsoft .NET Framework 3.5 on Windows Server 2016 (Server
Microsoft .NET Framework 3.5 on Windows Server 2016
Microsoft .NET Framework 3.5 on Windows Server 2004 (Server
Microsoft .NET Framework 3.5 on Windows Server 1909 (Server
Microsoft .NET Framework 3.5 on Windows 10 20H2 for x64-bas
Microsoft .NET Framework 3.5 on Windows 10 20H2 for ARM64-b
Microsoft .NET Framework 3.5 on Windows 10 20H2 for 32-bit
Microsoft .NET Framework 3.5 on Windows 10 2004 for x64-bas
Microsoft .NET Framework 3.5 on Windows 10 2004 for ARM64-b
Microsoft .NET Framework 3.5 on Windows 10 2004 for 32-bit
Microsoft .NET Framework 3.5 on Windows 10 1909 for x64-bas
Microsoft .NET Framework 3.5 on Windows 10 1909 for ARM64-b
Microsoft .NET Framework 3.5 on Windows 10 1909 for 32-bit
Microsoft .NET Framework 3.5 on Windows 10 1809 for x64-bas
Microsoft .NET Framework 3.5 on Windows 10 1809 for ARM64-b
Microsoft .NET Framework 3.5 on Windows 10 1809 for 32-bit
Microsoft .NET Framework 3.5 on Windows 10 1803 for x64-bas
Microsoft .NET Framework 3.5 on Windows 10 1803 for ARM64-b
Microsoft .NET Framework 3.5 on Windows 10 1803 for 32-bit
Microsoft .NET Framework 3.5 on Windows 10 1607 for x64-bas
Microsoft .NET Framework 3.5 on Windows 10 1607 for 32-bit
Microsoft .NET Framework 4.6 on Windows Server 2012(Server
Microsoft .NET Framework 4.6 on Windows Server 2012 R2(Serv
Microsoft .NET Framework 4.6 on Windows Server 2012 R2
Microsoft .NET Framework 4.6 on Windows Server 2012
Microsoft .NET Framework 4.6 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.6 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.6 on Windows Server 2008 for x64
Microsoft .NET Framework 4.6 on Windows Server 2008 for 32-
Microsoft .NET Framework 4.6 on Windows RT 8.1
Microsoft .NET Framework 4.6 on Windows 8.1 for x64-based S
Microsoft .NET Framework 4.6 on Windows 8.1 for 32-bit Syst
Microsoft .NET Framework 4.6 on Windows 7 for x64-based Sys
Microsoft .NET Framework 4.6 on Windows 7 for 32-bit System
Microsoft .NET Framework 4.6.1 on Windows Server 2012(Server
Microsoft .NET Framework 4.6.1 on Windows Server 2012 R2(Serv
Microsoft .NET Framework 4.6.1 on Windows Server 2012 R2
Microsoft .NET Framework 4.6.1 on Windows Server 2012
Microsoft .NET Framework 4.6.1 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.6.1 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.6.1 on Windows RT 8.1
Microsoft .NET Framework 4.6.1 on Windows 8.1 for x64-based S
Microsoft .NET Framework 4.6.1 on Windows 8.1 for 32-bit Syst
Microsoft .NET Framework 4.6.1 on Windows 7 for x64-based Sys
Microsoft .NET Framework 4.6.1 on Windows 7 for 32-bit System
Microsoft .NET Framework 4.6.2 on Windows Server 2016 (Server
Microsoft .NET Framework 4.6.2 on Windows Server 2016
Microsoft .NET Framework 4.6.2 on Windows Server 2012(Server
Microsoft .NET Framework 4.6.2 on Windows Server 2012 R2(Serv
Microsoft .NET Framework 4.6.2 on Windows Server 2012 R2
Microsoft .NET Framework 4.6.2 on Windows Server 2012
Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.6.2 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.6.2 on Windows RT 8.1
Microsoft .NET Framework 4.6.2 on Windows 8.1 for x64-based S
Microsoft .NET Framework 4.6.2 on Windows 8.1 for 32-bit Syst
Microsoft .NET Framework 4.6.2 on Windows 7 for x64-based Sys
Microsoft .NET Framework 4.6.2 on Windows 7 for 32-bit System
Microsoft .NET Framework 4.6.2 on Windows 10 Version 1607 for
Microsoft .NET Framework 4.6.2 on Windows 10 Version 1607 for
Microsoft .NET Framework 4.7 on Windows Server 2016 (Server
Microsoft .NET Framework 4.7 on Windows Server 2016
Microsoft .NET Framework 4.7 on Windows Server 2012(Server
Microsoft .NET Framework 4.7 on Windows Server 2012 R2(Serv
Microsoft .NET Framework 4.7 on Windows Server 2012 R2
Microsoft .NET Framework 4.7 on Windows Server 2012
Microsoft .NET Framework 4.7 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.7 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.7 on Windows RT 8.1
Microsoft .NET Framework 4.7 on Windows 8.1 for x64-based S
Microsoft .NET Framework 4.7 on Windows 8.1 for 32-bit Syst
Microsoft .NET Framework 4.7 on Windows 7 for x64-based Sys
Microsoft .NET Framework 4.7 on Windows 7 for 32-bit System
Microsoft .NET Framework 4.7 on Windows 10 1607 for x64-bas
Microsoft .NET Framework 4.7 on Windows 10 1607 for 32-bit
Microsoft .NET Framework 4.7.1 on Windows Server 2016 (Server
Microsoft .NET Framework 4.7.1 on Windows Server 2016
Microsoft .NET Framework 4.7.1 on Windows Server 2012(Server
Microsoft .NET Framework 4.7.1 on Windows Server 2012 R2(Serv
Microsoft .NET Framework 4.7.1 on Windows Server 2012 R2
Microsoft .NET Framework 4.7.1 on Windows Server 2012
Microsoft .NET Framework 4.7.1 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.7.1 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.7.1 on Windows RT 8.1
Microsoft .NET Framework 4.7.1 on Windows 8.1 for x64-based S
Microsoft .NET Framework 4.7.1 on Windows 8.1 for 32-bit Syst
Microsoft .NET Framework 4.7.1 on Windows 7 for x64-based Sys
Microsoft .NET Framework 4.7.1 on Windows 7 for 32-bit System
Microsoft .NET Framework 4.7.1 on Windows 10 1607 for x64-bas
Microsoft .NET Framework 4.7.1 on Windows 10 1607 for 32-bit
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2019(S
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2019
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2016 (
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2016
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2012(S
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2012 R
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2012 R
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2012
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2008 R
Microsoft .NET Framework 4.7.2 4.7.2 on Windows Server 2008 R
Microsoft .NET Framework 4.7.2 4.7.2 on Windows RT 8.1
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 8.1 for x64-b
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 8.1 for 32-bi
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 7 for x64-bas
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 7 for 32-bit
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1809 for x
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1809 for A
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1809 for 3
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1803 for x
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1803 for A
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1803 for 3
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1607 for x
Microsoft .NET Framework 4.7.2 4.7.2 on Windows 10 1607 for 3
Microsoft .NET Framework 4.8 on Windows Server 20H2 (Server
Microsoft .NET Framework 4.8 on Windows Server 2019 (Server
Microsoft .NET Framework 4.8 on Windows Server 2019
Microsoft .NET Framework 4.8 on Windows Server 2016 (Serve
Microsoft .NET Framework 4.8 on Windows Server 2016
Microsoft .NET Framework 4.8 on Windows Server 2012 R2 (Ser
Microsoft .NET Framework 4.8 on Windows Server 2012 R2
Microsoft .NET Framework 4.8 on Windows Server 2012 (Server
Microsoft .NET Framework 4.8 on Windows Server 2012
Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.8 on Windows Server 2008 R2 for
Microsoft .NET Framework 4.8 on Windows Server 2004 (Server
Microsoft .NET Framework 4.8 on Windows Server 1909 (Server
Microsoft .NET Framework 4.8 on Windows RT 8.1
Microsoft .NET Framework 4.8 on Windows 8.1 for x64-based s
Microsoft .NET Framework 4.8 on Windows 8.1 for 32-bit syst
Microsoft .NET Framework 4.8 on Windows 7 for x64-based Sys
Microsoft .NET Framework 4.8 on Windows 7 for 32-bit System
Microsoft .NET Framework 4.8 on Windows 10 20H2 for x64-bas
Microsoft .NET Framework 4.8 on Windows 10 20H2 for ARM64-b
Microsoft .NET Framework 4.8 on Windows 10 20H2 for 32-bit
Microsoft .NET Framework 4.8 on Windows 10 2004 for x64-bas
Microsoft .NET Framework 4.8 on Windows 10 2004 for ARM64-b
Microsoft .NET Framework 4.8 on Windows 10 2004 for 32-bit
Microsoft .NET Framework 4.8 on Windows 10 1909 for x64-bas
Microsoft .NET Framework 4.8 on Windows 10 1909 for ARM64-b
Microsoft .NET Framework 4.8 on Windows 10 1909 for 32-bit
Microsoft .NET Framework 4.8 on Windows 10 1809 for x64-bas
Microsoft .NET Framework 4.8 on Windows 10 1809 for 32-bit
Microsoft .NET Framework 4.8 on Windows 10 1803 for x64-bas
Microsoft .NET Framework 4.8 on Windows 10 1803 for 32-bit
Microsoft .NET Framework 4.8 on Windows 10 1607 for x64-bas
Microsoft .NET Framework 4.8 on Windows 10 1607 for 32-bit

描述：

CVE(CAN) ID: CVE-2021-24111

Microsoft .NET Framework是美国微软（Microsoft）公司的一种全面且一致的编程模型，也是一个用于构建Windows、Windows Store、Windows Phone、Windows Server和Microsoft Azure的应用程序的开发平台。该平台包括C＃和Visual Basic编程语言、公共语言运行库和广泛的类库。
Microsoft .NET Framework存在拒绝服务漏洞。攻击者可利用该漏洞导致目标系统停止响应。

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建议：

厂商补丁：

Microsoft
---------
目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24111

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