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Recent Microsoft .NET Core Security Advisories

Advisory Title Published
CVE-2021-43877 ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability December 14, 2021
CVE-2021-41355 .NET Core and Visual Studio Information Disclosure Vulnerability October 12, 2021
CVE-2021-26423 .NET Core and Visual Studio Denial of Service Vulnerability August 10, 2021
CVE-2021-34532 ASP.NET Core and Visual Studio Information Disclosure Vulnerability August 10, 2021
CVE-2021-34485 .NET Core and Visual Studio Information Disclosure Vulnerability August 10, 2021
CVE-2021-31957 .NET Core and Visual Studio Denial of Service Vulnerability June 8, 2021

@dotnet Tweets

Have you applauded an open-source project maintainer lately? #dotNET Rocks talks to @MartinWoodward and @terrajobst… https://t.co/2wh8PRJo62
Tue Jun 28 19:42:02 +0000 2022

We're now live doing API reviews. https://t.co/lXY8t8X5z6
Tue Jun 28 17:03:45 +0000 2022

Here's a great session of StereoKit (a lightweight, open-source library for building Mixed Reality experiences usin… https://t.co/TnPsKNV7CG
Tue Jun 28 16:17:02 +0000 2022

In the last video of the series for #dotNETMAUI for Beginners, we wrap it all up with a summary of what we learned… https://t.co/ZAV9A1FHkV
Tue Jun 28 13:38:01 +0000 2022

In today's Unhandled Exception Podcast, @CliffordAgius (airline pilot, freelance .NET developer, blogger, and respe… https://t.co/hmHR1OnJhz
Mon Jun 27 22:38:01 +0000 2022

By the Year

In 2022 there have been 6 vulnerabilities in Microsoft .NET Core with an average score of 7.4 out of ten. Last year .NET Core had 7 security vulnerabilities published. If vulnerabilities keep coming in at the current rate, it appears that number of security vulnerabilities in .NET Core in 2022 could surpass last years number. Last year, the average CVE base score was greater by 0.39

Year Vulnerabilities Average Score
2022 6 7.38
2021 7 7.77
2020 5 7.88
2019 6 7.23
2018 5 7.10

It may take a day or so for new .NET Core vulnerabilities to show up in the stats or in the list of recent security vulnerabilties. Additionally vulnerabilities may be tagged under a different product or component name.

Recent Microsoft .NET Core Security Vulnerabilities

.NET and Visual Studio Information Disclosure Vulnerability.

CVE-2022-30184 5.5 - Medium - June 15, 2022

.NET and Visual Studio Information Disclosure Vulnerability.

.NET and Visual Studio Denial of Service Vulnerability

CVE-2022-29117 7.5 - High - May 10, 2022

.NET and Visual Studio Denial of Service Vulnerability. This CVE ID is unique from CVE-2022-23267, CVE-2022-29145.

Resource Exhaustion

.NET and Visual Studio Denial of Service Vulnerability

CVE-2022-29145 7.5 - High - May 10, 2022

.NET and Visual Studio Denial of Service Vulnerability. This CVE ID is unique from CVE-2022-23267, CVE-2022-29117.

.NET and Visual Studio Denial of Service Vulnerability

CVE-2022-23267 7.5 - High - May 10, 2022

.NET and Visual Studio Denial of Service Vulnerability. This CVE ID is unique from CVE-2022-29117, CVE-2022-29145.

Resource Exhaustion

.NET and Visual Studio Remote Code Execution Vulnerability.

CVE-2022-24512 8.8 - High - March 09, 2022

.NET and Visual Studio Remote Code Execution Vulnerability.

.NET and Visual Studio Denial of Service Vulnerability.

CVE-2022-24464 7.5 - High - March 09, 2022

.NET and Visual Studio Denial of Service Vulnerability.

.NET Core and Visual Studio Denial of Service Vulnerability

CVE-2021-26423 7.5 - High - August 12, 2021

.NET Core and Visual Studio Denial of Service Vulnerability

.NET Core and Visual Studio Information Disclosure Vulnerability

CVE-2021-34485 5.5 - Medium - August 12, 2021

.NET Core and Visual Studio Information Disclosure Vulnerability

ASP.NET Denial of Service Vulnerability

CVE-2021-31957 7.5 - High - June 08, 2021

ASP.NET Denial of Service Vulnerability

.NET and Visual Studio Elevation of Privilege Vulnerability

CVE-2021-31204 7.8 - High - May 11, 2021

.NET and Visual Studio Elevation of Privilege Vulnerability

.NET Core Remote Code Execution Vulnerability

CVE-2021-26701 9.8 - Critical - February 25, 2021

.NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112.

.NET Core Remote Code Execution Vulnerability

CVE-2021-24112 9.8 - Critical - February 25, 2021

.NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-26701.

.NET Core and Visual Studio Denial of Service Vulnerability

CVE-2021-1721 6.5 - Medium - February 25, 2021

.NET Core and Visual Studio Denial of Service Vulnerability

.NET Core Remote Code Execution Vulnerability

CVE-2021-26701 9.8 - Critical - February 25, 2021

.NET Core Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-24112.

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash

CVE-2020-8927 6.5 - Medium - September 15, 2020

A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" decompression request to a script can trigger a crash, which happens when copying over chunks of data larger than 2 GiB. It is recommended to update your Brotli library to 1.0.8 or later. If one cannot update, we recommend to use the "streaming" API as opposed to the "one-shot" API, and impose chunk size limits.

Classic Buffer Overflow

A remote code execution vulnerability exists in .NET Framework

CVE-2020-1147 7.8 - High - July 14, 2020

A remote code execution vulnerability exists in .NET Framework, Microsoft SharePoint, and Visual Studio when the software fails to check the source markup of XML file input, aka '.NET Framework, SharePoint Server, and Visual Studio Remote Code Execution Vulnerability'.

A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests

CVE-2020-1108 7.5 - High - May 21, 2020

A denial of service vulnerability exists when .NET Core or .NET Framework improperly handles web requests, aka '.NET Core & .NET Framework Denial of Service Vulnerability'.

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user

CVE-2020-0606 8.8 - High - January 14, 2020

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka '.NET Framework Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0605.

Improper Input Validation

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user

CVE-2020-0605 8.8 - High - January 14, 2020

A remote code execution vulnerability exists in .NET software when the software fails to check the source markup of a file.An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user, aka '.NET Framework Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-0606.

Improper Input Validation

A denial of service vulnerability exists when .NET Core improperly handles web requests

CVE-2019-1301 7.5 - High - September 11, 2019

A denial of service vulnerability exists when .NET Core improperly handles web requests, aka '.NET Core Denial of Service Vulnerability'.

A denial of service vulnerability exists when .NET Framework or .NET Core improperly handle web requests

CVE-2019-0981 7.5 - High - May 16, 2019

A denial of service vulnerability exists when .NET Framework or .NET Core improperly handle web requests, aka '.Net Framework and .Net Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0820, CVE-2019-0980.

Data Processing Errors

A denial of service vulnerability exists when .NET Framework or .NET Core improperly handle web requests

CVE-2019-0980 7.5 - High - May 16, 2019

A denial of service vulnerability exists when .NET Framework or .NET Core improperly handle web requests, aka '.Net Framework and .Net Core Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0820, CVE-2019-0981.

Data Processing Errors

A denial of service vulnerability exists when .NET Framework and .NET Core improperly process RegEx strings

CVE-2019-0820 7.5 - High - May 16, 2019

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.

Resource Exhaustion

A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's

CVE-2019-0657 5.9 - Medium - March 05, 2019

A vulnerability exists in certain .Net Framework API's and Visual Studio in the way they parse URL's, aka '.NET Framework and Visual Studio Spoofing Vulnerability'.

Improper Input Validation

An information disclosure vulnerability exists in .NET Framework and .NET Core which

CVE-2019-0545 7.5 - High - January 08, 2019

An information disclosure vulnerability exists in .NET Framework and .NET Core which allows bypassing Cross-origin Resource Sharing (CORS) configurations, aka ".NET Framework Information Disclosure Vulnerability." This affects Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.2, Microsoft .NET Framework 4.7/4.7.1/4.7.2, .NET Core 2.1, Microsoft .NET Framework 4.7.1/4.7.2, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 2.2, Microsoft .NET Framework 4.7.2.

Information Disclosure

A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service

CVE-2018-8409 7.5 - High - September 13, 2018

A denial of service vulnerability exists when System.IO.Pipelines improperly handles requests, aka "System.IO.Pipelines Denial of Service." This affects .NET Core 2.1, System.IO.Pipelines, ASP.NET Core 2.1.

A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates

CVE-2018-8356 5.5 - Medium - July 11, 2018

A security feature bypass vulnerability exists when Microsoft .NET Framework components do not correctly validate certificates, aka ".NET Framework Security Feature Bypass Vulnerability." This affects .NET Framework 4.7.2, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2, ASP.NET Core 1.1, Microsoft .NET Framework 4.5.2, ASP.NET Core 2.0, ASP.NET Core 1.0, .NET Core 1.1, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, .NET Core 1.0, .NET Core 2.0, Microsoft .NET Framework 4.6, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1/4.7.1/4.7.2, Microsoft .NET Framework 4.7.2.

Improper Certificate Validation

A denial of service vulnerability exists when .NET and .NET Core improperly process XML documents

CVE-2018-0765 7.5 - High - May 09, 2018

A denial of service vulnerability exists when .NET and .NET Core improperly process XML documents, aka ".NET and .NET Core Denial of Service Vulnerability." This affects Microsoft .NET Framework 2.0, Microsoft .NET Framework 3.0, Microsoft .NET Framework 4.7.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2/4.7/4.7.1, Microsoft .NET Framework 4.5.2, Microsoft .NET Framework 4.7/4.7.1, Microsoft .NET Framework 4.6, Microsoft .NET Framework 3.5, Microsoft .NET Framework 3.5.1, Microsoft .NET Framework 4.6/4.6.1/4.6.2, Microsoft .NET Framework 4.6.2/4.7/4.7.1, .NET Core 2.0, Microsoft .NET Framework 4.7.2.

XXE

Microsoft .NET Framework 1.1, 2.0, 3.0, 3.5, 3.5.1, 4, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 5.7 and .NET Core 1.0

CVE-2018-0764 7.5 - High - January 10, 2018

Microsoft .NET Framework 1.1, 2.0, 3.0, 3.5, 3.5.1, 4, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2 and 5.7 and .NET Core 1.0. 1.1 and 2.0 allow a denial of service vulnerability due to the way XML documents are processed, aka ".NET and .NET Core Denial Of Service Vulnerability". This CVE is unique from CVE-2018-0765.

Microsoft .NET Framework 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, .NET Core 1.0 and 2.0, and PowerShell Core 6.0.0

CVE-2018-0786 7.5 - High - January 10, 2018

Microsoft .NET Framework 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, .NET Core 1.0 and 2.0, and PowerShell Core 6.0.0 allow a security feature bypass vulnerability due to the way certificates are validated, aka ".NET Security Feature Bypass Vulnerability."

Improper Certificate Validation

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