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CVE-2022-21986— .NET Denial of Service Vulnerability

Quick assessment

Affected
Microsoft Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)
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.

Kestrel Web Server是一个ASP.NET Core的跨平台Web 服务器。 Kestrel Web Server存在输入验证错误漏洞。以下产品和版本受到影响：Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8),Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10),Microsoft Visual Studio 2022 version

CVSS 7.5 · High EPSS 3.74% · P89

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2022-21986

Vulnerability Information
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Vulnerability Title
.NET Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
.NET Denial of Service Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Kestrel Web Server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Kestrel Web Server是一个ASP.NET Core的跨平台Web 服务器。 Kestrel Web Server存在输入验证错误漏洞。以下产品和版本受到影响：Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8),Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10),Microsoft Visual Studio 2022 version
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 Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) 15.0.0 ~ 16.9.17 -
Microsoft Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10) 16.11.0 ~ 16.11.10 -
Microsoft Microsoft Visual Studio 2022 version 17.0 17.0.0 ~ 17.0.6 -
Microsoft Visual Studio 2019 for Mac version 8.10 8.1.0 ~ 8.10.18 -
Microsoft .NET 5.0 5.0.0 ~ 5.0.14 -
Microsoft .NET 6.0 6.0.0 ~ 6.0.2 -

II. Public POCs for CVE-2022-21986

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III. Intelligence Information for CVE-2022-21986

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Vendor Advisories for CVE-2022-21986 (1)

Same Patch Batch · Microsoft · 2022-02-09 · 48 CVEs total

CVE-2022-23274 8.8 HIGH Microsoft Dynamics GP Remote Code Execution Vulnerability
CVE-2022-22005 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2022-21984 8.8 HIGH Windows DNS Server Remote Code Execution Vulnerability
CVE-2022-23272 8.1 HIGH Microsoft Dynamics GP Elevation Of Privilege Vulnerability
CVE-2022-23256 8.1 HIGH Azure Data Explorer Spoofing Vulnerability
CVE-2022-21991 8.1 HIGH Visual Studio Code Remote Development Extension Remote Code Execution Vulnerability
CVE-2022-21987 8.0 HIGH Microsoft SharePoint Server Spoofing Vulnerability
CVE-2022-21995 7.9 HIGH Windows Hyper-V Remote Code Execution Vulnerability
CVE-2022-22004 7.8 HIGH Microsoft Office ClickToRun Remote Code Execution Vulnerability
CVE-2022-21981 7.8 HIGH Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2022-21996 7.8 HIGH Win32k Elevation of Privilege Vulnerability
CVE-2022-21999 7.8 HIGH Windows Print Spooler Elevation of Privilege Vulnerability
CVE-2022-22000 7.8 HIGH Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2022-22001 7.8 HIGH Windows Remote Access Connection Manager Elevation of Privilege Vulnerability
CVE-2022-22003 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2022-21926 7.8 HIGH HEVC Video Extensions Remote Code Execution Vulnerability
CVE-2022-22709 7.8 HIGH VP9 Video Extensions Remote Code Execution Vulnerability
CVE-2022-22715 7.8 HIGH Named Pipe File System Elevation of Privilege Vulnerability
CVE-2022-22718 7.8 HIGH Windows Print Spooler Elevation of Privilege Vulnerability
CVE-2022-23276 7.8 HIGH SQL Server for Linux Containers Elevation of Privilege Vulnerability

Showing top 20 of 48 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: Microsoft

V. Comments for CVE-2022-21986

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