CVE-2022-21986

.NET Denial of Service Vulnerability

CVE-2022-21986 is fixed in 22 products on 1 platform, first by RHSA-2022:0495, released February 9, 2022. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0374

89th percentile

.NET is a managed-software framework. It implements a subset of the .NET framework APIs and several new APIs, and it includes a CLR implementation. New versions of .NET that address a security vulnerability are now available. The updated versions are .NET SDK 5.0.211 and .NET Runtime 5.0.14. Security Fix(es): * dotnet: ASP.NET Core Krestel HTTP headers pooling denial of service (CVE-2022-219862) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
aspnetcore-runtime-5.0 · RHEL 8	0:5.0.14-1.el8_5	RHSA-2022:0495	Feb 9, 2022
aspnetcore-runtime-5.0 · ol 8	0:5.0.14-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
aspnetcore-runtime-6.0 · RHEL 8	0:6.0.2-1.el8_5	RHSA-2022:0496	Feb 9, 2022
aspnetcore-runtime-6.0 · almalinux 8	6.0.2-1.el8_5	ALSA-2022:0496	Feb 9, 2022
aspnetcore-runtime-6.0 · ol 8	0:6.0.2-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
aspnetcore-targeting-pack-5.0 · RHEL 8	0:5.0.14-1.el8_5	RHSA-2022:0495	Feb 9, 2022
aspnetcore-targeting-pack-5.0 · ol 8	0:5.0.14-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
aspnetcore-targeting-pack-6.0 · RHEL 8	0:6.0.2-1.el8_5	RHSA-2022:0496	Feb 9, 2022
aspnetcore-targeting-pack-6.0 · almalinux 8	6.0.2-1.el8_5	ALSA-2022:0496	Feb 9, 2022
aspnetcore-targeting-pack-6.0 · ol 8	0:6.0.2-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet · RHEL 8	0:6.0.102-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet · almalinux 8	6.0.102-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet · ol 8	0:6.0.102-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet-apphost-pack-5.0 · RHEL 8	0:5.0.14-1.el8_5	RHSA-2022:0495	Feb 9, 2022
dotnet-apphost-pack-5.0 · ol 8	0:5.0.14-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
dotnet-apphost-pack-6.0 · RHEL 8	0:6.0.2-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet-apphost-pack-6.0 · almalinux 8	6.0.2-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet-apphost-pack-6.0 · ol 8	0:6.0.2-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet-host · RHEL 8	0:6.0.2-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet-host · almalinux 8	6.0.2-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet-host · ol 8	0:6.0.2-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet-hostfxr-5.0 · RHEL 8	0:5.0.14-1.el8_5	RHSA-2022:0495	Feb 9, 2022
dotnet-hostfxr-5.0 · ol 8	0:5.0.14-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
dotnet-hostfxr-6.0 · RHEL 8	0:6.0.2-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet-hostfxr-6.0 · almalinux 8	6.0.2-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet-hostfxr-6.0 · ol 8	0:6.0.2-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet-runtime-5.0 · RHEL 8	0:5.0.14-1.el8_5	RHSA-2022:0495	Feb 9, 2022
dotnet-runtime-5.0 · ol 8	0:5.0.14-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
dotnet-runtime-6.0 · RHEL 8	0:6.0.2-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet-runtime-6.0 · almalinux 8	6.0.2-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet-runtime-6.0 · ol 8	0:6.0.2-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet-sdk-5.0 · RHEL 8	0:5.0.211-1.el8_5	RHSA-2022:0495	Feb 9, 2022
dotnet-sdk-5.0 · ol 8	0:5.0.211-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
dotnet-sdk-5.0-source-built-artifacts · RHEL 8	0:5.0.211-1.el8_5	RHSA-2022:0495	Feb 9, 2022
dotnet-sdk-5.0-source-built-artifacts · ol 8	0:5.0.211-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
dotnet-sdk-6.0 · RHEL 8	0:6.0.102-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet-sdk-6.0 · almalinux 8	6.0.102-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet-sdk-6.0 · ol 8	0:6.0.102-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet-targeting-pack-5.0 · RHEL 8	0:5.0.14-1.el8_5	RHSA-2022:0495	Feb 9, 2022
dotnet-targeting-pack-5.0 · ol 8	0:5.0.14-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
dotnet-targeting-pack-6.0 · RHEL 8	0:6.0.2-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet-targeting-pack-6.0 · almalinux 8	6.0.2-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet-targeting-pack-6.0 · ol 8	0:6.0.2-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet-templates-5.0 · RHEL 8	0:5.0.211-1.el8_5	RHSA-2022:0495	Feb 9, 2022
dotnet-templates-5.0 · ol 8	0:5.0.211-1.0.1.el8_5	ELSA-2022-0495	Feb 9, 2022
dotnet-templates-6.0 · RHEL 8	0:6.0.102-1.el8_5	RHSA-2022:0496	Feb 9, 2022
dotnet-templates-6.0 · almalinux 8	6.0.102-1.el8_5	ALSA-2022:0496	Feb 9, 2022
dotnet-templates-6.0 · ol 8	0:6.0.102-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022
dotnet5.0 · rocky 8	0:5.0.211-1.el8_5	RLSA-2022:0495	Feb 9, 2022
dotnet6.0 · rocky 8	0:6.0.102-1.el8_5	RLSA-2022:0496	Feb 9, 2022
netstandard-targeting-pack-2.1 · RHEL 8	0:6.0.102-1.el8_5	RHSA-2022:0496	Feb 9, 2022
netstandard-targeting-pack-2.1 · almalinux 8	6.0.102-1.el8_5	ALSA-2022:0496	Feb 9, 2022
netstandard-targeting-pack-2.1 · ol 8	0:6.0.102-1.0.1.el8_5	ELSA-2022-0496	Mar 9, 2022

Details

Published
February 8, 2022
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21986

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