CVE-2021-31957

ASP.NET Core Denial of Service Vulnerability

Description

ASP.NET Core Denial of Service Vulnerability

5.9

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 5.15% Top 15%

Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory microsoft.com

Affected: Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)

Affected: Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)

Affected: Microsoft Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)

Affected: Microsoft Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)

Affected: Microsoft Visual Studio 2019 for Mac version 8.10

Affected: Microsoft .NET Core 3.1

Affected: Microsoft .NET 5.0

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31957	patch vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMHWHRRYDHKM6BIINW5V7OCSW4SDWB4W/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4PRVVLXXQEF4SEJOBV3VRJHGX7YHY2CG/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMAO4NG2OQ4PCXUQWMNSCMYWLIJJY6UY/	vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVCDYIP4A6DDRT7G6P3ZW6PKNK2DNWJ2/	vendor advisory

What is the severity of CVE-2021-31957?: CVE-2021-31957 has been scored as a medium severity vulnerability.
How to fix CVE-2021-31957?: To fix CVE-2021-31957, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-31957 being actively exploited in the wild?: It is possible that CVE-2021-31957 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-31957?: CVE-2021-31957 affects Microsoft Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3), Microsoft Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6), Microsoft Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8), Microsoft Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9), Microsoft Visual Studio 2019 for Mac version 8.10, Microsoft .NET Core 3.1, Microsoft .NET 5.0.