Vulnerability · Published Jun 8, 2021 · Assigned by microsoft
CVE-2021-31957ASP.NET Core Denial of Service Vulnerability
Medium 5.9
In plain English
A medium-severity uncontrolled resource consumption in Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9) from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 5.1% (higher than 92% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)5.1%top 7.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
ASP.NET Core Denial of Service Vulnerability
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| NuGet | microsoft.netcore.app.ref | 3.1.16 | GHSA-mcwm-2wmc-6hv4 |
| NuGet | microsoft.netcore.app.ref | 5.0.7 | GHSA-mcwm-2wmc-6hv4 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | 16.0 – before 16.4.23 |
| Microsoft | Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | 16.0.0 – before 16.7.16 |
| Microsoft | Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) | 15.0.0 – before 16.9.7 |
| Microsoft | Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9) | 16.10.0 – before 16.10.1 |
| Microsoft | Visual Studio 2019 for Mac version 8.10 | 8.1.0 – before 8.10.1 |
| Microsoft | .NET Core 3.1 | 3.1 – before 3.1.16 |
| Microsoft | .NET 5.0 | 5.0.0 – before 5.0.7 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31957 x_refsource_MISC
- FEDORA-2021-4b3fc547fe vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-cb4f3ab817 vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-1e0e04958d vendor-advisory, x_refsource_FEDORA
- FEDORA-2021-e9c84e6d26 vendor-advisory, x_refsource_FEDORA