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CVE-2021-31977— Windows Hyper-V Denial of Service Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1809
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Hyper-V是美国微软（Microsoft）公司的一个应用程序。一种系统管理程序虚拟化技术，能够实现桌面虚拟化。 Microsoft Hyper-V存在缓冲区错误漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for x64-based Systems,Windows Server 2019,Windows Server 2019 (Server Core installation),Windows 10 Version 1909 for x64-bas

CVSS 8.6 · High EPSS 3.18% · P88

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2021-31977

Vulnerability Information
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Vulnerability Title
Windows Hyper-V Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows Hyper-V Denial of Service Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Hyper-V 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Hyper-V是美国微软（Microsoft）公司的一个应用程序。一种系统管理程序虚拟化技术，能够实现桌面虚拟化。 Microsoft Hyper-V存在缓冲区错误漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for x64-based Systems,Windows Server 2019,Windows Server 2019 (Server Core installation),Windows 10 Version 1909 for x64-bas
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 1809 10.0.0 ~ 10.0.17763.1999 cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.1999:*:*:*:*:*:x64:*
Microsoft Windows Server 2019 10.0.0 ~ 10.0.17763.1999 cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.1999:*:*:*:*:*:*:*
Microsoft Windows Server 2019 (Server Core installation) 10.0.0 ~ 10.0.17763.1999 cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.1999:*:*:*:*:*:*:*
Microsoft Windows 10 Version 1909 10.0.0 ~ 10.0.18363.1621 cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1621:*:*:*:*:*:x64:*
Microsoft Windows 10 Version 21H1 10.0.0 ~ 10.0.19043.1052 cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1052:*:*:*:*:*:x64:*
Microsoft Windows 10 Version 2004 10.0.0 ~ 10.0.19041.1052 cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1052:*:*:*:*:*:x64:*
Microsoft Windows Server version 2004 10.0.0 ~ 10.0.19041.1052 cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1052:*:*:*:*:*:*:*
Microsoft Windows Server version 20H2 10.0.0 ~ 10.0.19042.1052 cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1052:*:*:*:*:*:*:*
Microsoft Windows 10 Version 1507 10.0.0 ~ 10.0.10240.18967 cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.18967:*:*:*:*:*:x64:*
Microsoft Windows 10 Version 1607 10.0.0 ~ 10.0.14393.4467 cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.4467:*:*:*:*:*:x64:*
Microsoft Windows Server 2016 10.0.0 ~ 10.0.14393.4467 cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4467:*:*:*:*:*:*:*
Microsoft Windows Server 2016 (Server Core installation) 10.0.0 ~ 10.0.14393.4467 cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4467:*:*:*:*:*:*:*

II. Public POCs for CVE-2021-31977

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III. Intelligence Information for CVE-2021-31977

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Vendor Advisories for CVE-2021-31977 (1)

Same Patch Batch · Microsoft · 2021-06-08 · 50 CVEs total

CVE-2021-31962 9.4 CRITICAL Kerberos AppContainer Security Feature Bypass Vulnerability
CVE-2021-33739 8.4 HIGH Microsoft DWM Core Library Elevation of Privilege Vulnerability
CVE-2021-33741 8.2 HIGH Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
CVE-2021-31980 8.1 HIGH Microsoft Intune Management Extension Remote Code Execution Vulnerability
CVE-2021-1675 7.8 HIGH Windows Print Spooler Remote Code Execution Vulnerability
CVE-2021-31942 7.8 HIGH 3D Viewer Remote Code Execution Vulnerability
CVE-2021-31973 7.8 HIGH Windows GPSVC Elevation of Privilege Vulnerability
CVE-2021-31969 7.8 HIGH Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability
CVE-2021-31967 7.8 HIGH VP9 Video Extensions Remote Code Execution Vulnerability
CVE-2021-31940 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-31939 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2021-31941 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-31943 7.8 HIGH 3D Viewer Remote Code Execution Vulnerability
CVE-2021-31956 7.8 HIGH Windows NTFS Elevation of Privilege Vulnerability
CVE-2021-31954 7.8 HIGH Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2021-31952 7.8 HIGH Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
CVE-2021-31953 7.8 HIGH Windows Filter Manager Elevation of Privilege Vulnerability
CVE-2021-31951 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-31945 7.8 HIGH Paint 3D Remote Code Execution Vulnerability
CVE-2021-31946 7.8 HIGH Paint 3D Remote Code Execution Vulnerability

Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1809
Same vendor: Microsoft

V. Comments for CVE-2021-31977

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