Vulnerability · Published Jan 12, 2021 · Assigned by microsoft
CVE-2021-1723ASP.NET Core and Visual Studio 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.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)5.3%top 7.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
ASP.NET Core and Visual Studio Denial of Service Vulnerability
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | microsoft.aspnetcore.app.runtime.linux-arm | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-arm | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-arm64 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-arm64 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-musl-arm | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-musl-arm64 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-musl-arm64 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-musl-x64 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-musl-x64 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-x64 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.linux-x64 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.osx-x64 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.osx-x64 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-arm | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-arm | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-arm64 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-arm64 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-x64 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-x64 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-x86 | 3.1.11 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.app.runtime.win-x86 | 5.0.2 | GHSA-242j-2gm6-5rwx |
| NuGet | microsoft.aspnetcore.server.kestrel.core | 2.1.25 | GHSA-242j-2gm6-5rwx |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | ASP.NET Core 3.1 | 3.0 – before publication |
| Microsoft | ASP.NET Core 5.0 | 5.0 – 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 16.8 | 16.0 – before publication |
| Microsoft | Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | 16.0.0 – before publication |
References
- ASP.NET Core and Visual Studio Denial of Service Vulnerability vendor-advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1723 x_refsource_MISC, x_transferred