CVE-2021-26423
mediumPriorität · verfolgen · 21EPSS 0.039 · 90. PerzentilEURUUSEPSS · bewertet 2026-10-27
.NET Core and Visual Studio Denial of Service Vulnerability
Behebungen
Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.
Ein Hersteller-Fix ist verfügbar.
- Behoben.NET 5.0msrc_csaf
5.0.9:Security Update:https://github.com/dotnet/announcements/issues/194
https://github.com/dotnet/announcements/issues/194 - Behoben.NET Core 2.1msrc_csaf
2.1.30:Security Update:https://github.com/dotnet/announcements/issues/194
https://github.com/dotnet/announcements/issues/194 - Behoben.NET Core 3.1msrc_csaf
3.1.18:Security Update:https://github.com/dotnet/announcements/issues/194
https://github.com/dotnet/announcements/issues/194 - BehobenMicrosoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8)msrc_csaf
15.9.38:Security Update:https://docs.microsoft.com/en-us/visualstudio/releasenotes/vs2017-relnotes
https://docs.microsoft.com/en-us/visualstudio/releasenotes/vs2017-relnotes - BehobenMicrosoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)msrc_csaf
16.10.5:Security Update:https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.10
https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.10 - BehobenMicrosoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)msrc_csaf
16.4.25:Security Update:https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.4
https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.4 - BehobenMicrosoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)msrc_csaf
16.7.18:Security Update:https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.7
https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.7 - BehobenMicrosoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)msrc_csaf
16.9.10:Security Update:https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.9
https://docs.microsoft.com/en-us/visualstudio/releases/2019/release-notes-v16.9 - BehobenPowerShell Core 7.0msrc_csaf
7.0.7:Security Update:https://github.com/PowerShell/Announcements/issues/25
https://github.com/PowerShell/Announcements/issues/25 - BehobenPowerShell Core 7.1msrc_csaf
7.1.4:Security Update:https://github.com/PowerShell/Announcements/issues/25
https://github.com/PowerShell/Announcements/issues/25 - BehobenVisual Studio 2019 for Mac version 8.10msrc_csaf
8.10.7:Security Update:https://docs.microsoft.com/visualstudio/releasenotes/vs2019-mac-relnotes
https://docs.microsoft.com/visualstudio/releasenotes/vs2019-mac-relnotes
cvss
Technischer Schweregrad, 0–10. Eine Zeile je Quelle.
Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 4.3–7.5
SSVC
Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.
schwächen
Die CWE-Schwächeklassen, zu denen dies gehört.
betroffene Produkte (87)
Betroffene Produkte und Versionsbereiche.
Advisories (4)
Hersteller- und Ökosystem-Meldungen dazu.
- msrc_CVE-2021-26423.NET Core and Visual Studio Denial of Service Vulnerability2021-08-10csaf · msrc_csafUS
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
- GHSA-rh58-r7jh-xhx3.NET Core Elevation of Privilege Vulnerability2022-10-25ghsa · osvUS
Microsoft is releasing this security advisory to provide information about a vulnerability in .NET 5.0 and .NET Core 3.1. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability. A denial of service vulnerability exists in .NET 5.0, .NET Core 3.1 and .NET Core 2.1 where .NET (Core) server applications providing WebSocket endpoints could be tricked into endlessly looping while trying to read a single WebSocket frame. ### Patches * If you're using .NET 5.0, you should download and install Runtime 5.0.9 or SDK 5.0.206 (for Visual Studio 2019 v16.8) or SDK 5.0.303 (for Visual Studio 2019 V16.10) from https://dotnet.microsoft.com/download/dotnet-core/5.0. * If you're using .NET Core 3.1, you should download and install Runtime 3.1.18 or SDK 3.1.118 (for Visual Studio 2019 v16.4) or 3.1.412 (for Visual Studio 2019 v16.7 or later) from https://dotnet.microsoft.com/download/dotnet-core/3.1. * If you're using .NET Core 2.1, you should download and install Runtime 2.1.29 or SDK 2.1.525 (for Visual Studio 2019 v15.9) or 2.1.817 from https://dotnet.microsoft.com/download/dotnet-core/2.1. #### Other Details - Announcement for this issue can be found at https://github.com/dotnet/announcements/issues/194 - An Issue for this can be found at https://github.com/dotnet/runtime/issues/57175 - MSRC details for this can be found at https://msrc.microsoft.com/update-guide/en-US/vulnerability/CVE-2021-26423
- BIT-dotnet-2021-26423.NET Core and Visual Studio Denial of Service Vulnerability2024-03-06vendor · osvUS
.NET Core and Visual Studio Denial of Service Vulnerability
- BIT-dotnet-sdk-2021-26423.NET Core and Visual Studio Denial of Service Vulnerability2024-03-06vendor · osvUS
.NET Core and Visual Studio Denial of Service Vulnerability
auch bekannt als (7)
Weitere Namen und Kennungen dieser Entität.
- CNNVD-202108-847cnnvd
- EUVD-2022-7160enisa_euvd
- BDU:2021-04773fstec_bdu
- GHSA-rh58-r7jh-xhx3enisa_euvd
- BIT-dotnet-2021-26423osv
- BIT-dotnet-sdk-2021-26423osv
- GHSA-rh58-r7jh-xhx3osv
quellen
Welche Quellen diesen Datensatz belegen und wann.
Referenzen (12)
Externe Belege — Patches, Meldungen, Analysen.
- https://access.redhat.com/security/cve/cve-2021-26423cnnvd
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26423cnnvd
- https://packetstormsecurity.com/files/163799/Red-Hat-Security-Advisory-2021-3142-01.htmlcnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423cnnvd
- https://vigilance.fr/vulnerability/Microsoft-Visual-Studio-vulnerabilities-of-August-2021-36113cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.2729cnnvd
- https://www.auscert.org.au/bulletins/ESB-2021.2753cnnvd
- https://www.cybersecurity-help.cz/vdb/SB2021081011cnnvd
Angreifer nutzen Schwachstellen wie diese gegen im Internet exponierte Dienste aus. Sehen Sie mit einem kostenlosen Passiv-Scan, was exponiert ist.
Kostenloser Scan