Description
A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0548.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | ASP.NET Core | 2.1 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Dotnet 2 | rh-dotnet21 +1 | 2.1-6.el7 | RHSA-2019:0040 |
| Red Hat Rhel Dotnet 2 | rh-dotnet21-dotnet +2 | 2.1.503-1.el7 | RHSA-2019:0040 |
| Red Hat Rhel Dotnet 2 | rh-dotnet21-dotnet-host +1 | 2.1.7-1.el7 | RHSA-2019:0040 |
| Red Hat Rhel Dotnet 2 | rh-dotnet22 +1 | 2.2-2.el7 | RHSA-2019:0040 |
| Red Hat Rhel Dotnet 2 | rh-dotnet22-dotnet +2 | 2.2.102-1.el7 | RHSA-2019:0040 |
| Red Hat Rhel Dotnet 2 | rh-dotnet22-dotnet-host +2 | 2.2.1-1.el7 | RHSA-2019:0040 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| NuGet | Microsoft.AspNetCore.All | >= 2.2.0, < 2.2.1 | 2.2.1 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.AspNetCore.All | >= 2.1.0, < 2.1.7 | 2.1.7 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.AspNetCore.App | >= 2.2.0, < 2.2.1 | 2.2.1 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.AspNetCore.App | >= 2.1.0, < 2.1.7 | 2.1.7 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.AspNetCore.Server.Kestrel.Core | >= 2.1.0, < 2.1.7 | 2.1.7 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.AspNetCore.WebSockets | >= 2.2.0, < 2.2.1 | 2.2.1 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.AspNetCore.WebSockets | >= 2.1.0, < 2.1.7 | 2.1.7 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.NETCore.App | >= 2.2.0, < 2.2.1 | 2.2.1 | GHSA-6px8-22w5-w334 |
| NuGet | Microsoft.NETCore.App | >= 2.1.0, < 2.1.7 | 2.1.7 | GHSA-6px8-22w5-w334 |
| NuGet | System.Net.WebSockets.WebSocketProtocol | >= 4.5.0, < 4.5.3 | 4.5.3 | GHSA-6px8-22w5-w334 |
Advisories 1
- RHSA-2019:0040 Red Hat Security Advisory: .NET Core on Red Hat Enterprise Linux security update Red Hat Security Advisories (RHSA) · Jun 28, 2026
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0564
- 106413 vdb-entry
- RHSA-2019:0040 vendor-advisory