Vulnerability · Published May 21, 2020 · Assigned by microsoft
CVE-2020-1161ASP.NET Core Denial of Service Vulnerability
High 7.5
In plain English
A high-severity security flaw in ASP.NET Core 3.1 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.3% (higher than 93% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
A denial of service vulnerability exists when ASP.NET Core improperly handles web requests. An attacker who successfully exploited this vulnerability could cause a denial of service against an ASP.NET Core web application. The vulnerability can be exploited remotely, without authentication. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to the ASP.NET Core application. The update addresses the vulnerability by correcting how the ASP.NET Core web application handles web requests.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | microsoft.aspnetcore.app.runtime.linux-arm | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.linux-arm64 | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.linux-musl-arm64 | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.linux-musl-x64 | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.linux-x64 | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.osx-x64 | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.win-arm | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.win-x64 | 3.1.4 | GHSA-3cf7-7wq6-8842 |
| NuGet | microsoft.aspnetcore.app.runtime.win-x86 | 3.1.4 | GHSA-3cf7-7wq6-8842 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | ASP.NET Core 3.1 | 3.0 – before publication |
| Microsoft | Microsoft Visual Studio 2017 version 15.9 (includes 15.0 - 15.8) | 15.9.0 – before publication |
| Microsoft | Microsoft Visual Studio 2019 version 16.0 | 16.0 – before publication |
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | 16.0 – before publication |
| Microsoft | Microsoft Visual Studio 2019 version 16.5 | 16.0 – before publication |
References
- ASP.NET Core Denial of Service Vulnerability vendor-advisory, patch
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1161 x_refsource_MISC, x_transferred