high
7.5
CWE
400
Advisory Published
CVE Published
Updated

CVE-2019-0820

First published: Thu May 02 2019(Updated: )

A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings, aka '.NET Framework and .NET Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0980, CVE-2019-0981.

Credit: secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Microsoft .NET Core SDK=1.0
Microsoft .NET Core SDK=1.1
Microsoft .NET Core SDK=2.1
Microsoft .NET Core SDK=2.2
Microsoft .NET Framework 4=2.0-sp2
Microsoft .NET Framework 4=3.0-sp2
Microsoft Windows Server=sp2
Microsoft .NET Framework 4=3.5
Microsoft Windows 10
Microsoft Windows 10=1607
Microsoft Windows 10=1703
Microsoft Windows 10=1709
Microsoft Windows 10=1803
Microsoft Windows 10=1809
Microsoft Windows 10=1903
Microsoft Windows 8.1
Microsoft Windows Server
Microsoft Windows Server=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2016=1803
Microsoft Windows Server 2016=1903
Microsoft Windows Server 2019
Microsoft .NET Framework 4=3.5.1
Microsoft Windows 7=sp1
Microsoft Windows Server=r2-sp1
Microsoft Windows Server=r2-sp1
Microsoft .NET Framework 4=4.5.2
Microsoft Windows RT
Microsoft .NET Framework 4=4.6
Microsoft .NET Framework 4=4.6.2
Microsoft .NET Framework 4=4.7
Microsoft .NET Framework 4=4.7.1
Microsoft .NET Framework 4=4.7.2
Microsoft .NET Framework 4=4.6.1
Microsoft .NET Framework 4=4.8
Red Hat Enterprise Linux=8.0
Red Hat Enterprise Linux Server EUS=8.1
Red Hat Enterprise Linux Server EUS=8.2
Red Hat Enterprise Linux Server EUS=8.4
Red Hat Enterprise Linux Server EUS=8.6
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server=8.6
Red Hat Enterprise Linux Server=8.2
Red Hat Enterprise Linux Server=8.4
Red Hat Enterprise Linux Server=8.6

Remedy

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0820

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Reference Links

Frequently Asked Questions

  • What is CVE-2019-0820?

    CVE-2019-0820 is a denial of service vulnerability that exists in .NET Framework and .NET Core when processing RegEx strings.

  • How does CVE-2019-0820 affect Microsoft .NET Core?

    CVE-2019-0820 affects Microsoft .NET Core versions 1.0, 1.1, 2.1, and 2.2.

  • How does CVE-2019-0820 affect Microsoft .NET Framework?

    CVE-2019-0820 affects Microsoft .NET Framework versions 2.0 SP2, 3.0 SP2, and 3.5.

  • What is the severity of CVE-2019-0820?

    CVE-2019-0820 has a severity rating of 7.5, indicating a high severity.

  • How do I fix CVE-2019-0820?

    To fix CVE-2019-0820, it is recommended to apply the latest security updates provided by Microsoft or Red Hat.

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