CVE-2021-26423

.NET Core and Visual Studio Denial of Service Vulnerability
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 87%
Affected Products (NVD)
VendorProductVersion
microsoft.net
5.0 ≤
𝑥
≤ 5.0.8
microsoft.net_core
2.1 ≤
𝑥
≤ 2.1.28
microsoft.net_core
3.1 ≤
𝑥
≤ 3.1.17
microsoftpowershell_core
7.0 ≤
𝑥
< 7.0.7
microsoftpowershell_core
7.1 ≤
𝑥
< 7.1.4
microsoftvisual_studio_2017
15.0 ≤
𝑥
≤ 15.9
microsoftvisual_studio_2019
16.0 ≤
𝑥
≤ 16.10
microsoftvisual_studio_2019
8.10
𝑥
= Vulnerable software versions
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
aspnetcore-runtime-3.1
RHEL 8
0:3.1.18-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.18-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.18-1.el8_4
fixed
aspnetcore-runtime-5.0
RHEL 8
0:5.0.9-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.9-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.9-1.el8_4
fixed
aspnetcore-targeting-pack-3.1
RHEL 8
0:3.1.18-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.18-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.18-1.el8_4
fixed
aspnetcore-targeting-pack-5.0
RHEL 8
0:5.0.9-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.9-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.9-1.el8_4
fixed
dotnet
RHEL 8
0:5.0.206-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.206-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.206-1.el8_4
fixed
dotnet-apphost-pack-3.1
RHEL 8
0:3.1.18-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.18-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.18-1.el8_4
fixed
dotnet-apphost-pack-5.0
RHEL 8
0:5.0.9-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.9-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.9-1.el8_4
fixed
dotnet-host
RHEL 8
0:5.0.9-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.9-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.9-1.el8_4
fixed
dotnet-hostfxr-3.1
RHEL 8
0:3.1.18-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.18-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.18-1.el8_4
fixed
dotnet-hostfxr-5.0
RHEL 8
0:5.0.9-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.9-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.9-1.el8_4
fixed
dotnet-runtime-3.1
RHEL 8
0:3.1.18-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.18-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.18-1.el8_4
fixed
dotnet-runtime-5.0
RHEL 8
0:5.0.9-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.9-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.9-1.el8_4
fixed
dotnet-sdk-3.1
RHEL 8
0:3.1.118-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.118-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.118-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.118-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.118-1.el8_4
fixed
dotnet-sdk-5.0
RHEL 8
0:5.0.206-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.206-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.206-1.el8_4
fixed
dotnet-targeting-pack-3.1
RHEL 8
0:3.1.18-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.18-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.18-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.18-1.el8_4
fixed
dotnet-targeting-pack-5.0
RHEL 8
0:5.0.9-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.9-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.9-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.9-1.el8_4
fixed
dotnet-templates-3.1
RHEL 8
0:3.1.118-1.el8_4
fixed
RHEL 8.4 AUS
0:3.1.118-1.el8_4
fixed
RHEL 8.4 E4S
0:3.1.118-1.el8_4
fixed
RHEL 8.4 EUS
0:3.1.118-1.el8_4
fixed
RHEL 8.4 TUS
0:3.1.118-1.el8_4
fixed
dotnet-templates-5.0
RHEL 8
0:5.0.206-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.206-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.206-1.el8_4
fixed
netstandard-targeting-pack-2.1
RHEL 8
0:5.0.206-1.el8_4
fixed
RHEL 8.4 AUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 E4S
0:5.0.206-1.el8_4
fixed
RHEL 8.4 EUS
0:5.0.206-1.el8_4
fixed
RHEL 8.4 TUS
0:5.0.206-1.el8_4
fixed
References
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423