Description
ASP.NET Core and Visual Studio Information Disclosure Vulnerability
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Microsoft | ASP.NET Core 2.1 | 2.0 – < 2.1.29 | 2.1.29 |
| Microsoft | ASP.NET Core 3.1 | 3.0 – < 3.1.18 | 3.1.18 |
| Microsoft | ASP.NET Core 5.0 | 5.0 – < 5.0.9 | 5.0.9 |
| Microsoft | Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9) | 16.10.0 – < 16.10.5 | 16.10.5 |
| Microsoft | Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3) | 16.0 – < 16.4.25 | 16.4.25 |
| Microsoft | Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6) | 16.0.0 – < 16.7.18 | 16.7.18 |
| Microsoft | Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8) | 15.0.0 – < 16.9.10 | 16.9.10 |
| Microsoft | Visual Studio 2019 for Mac version 8.10 | 8.1.0 – < 8.10.7 | 8.10.7 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | dotnet +4 | 5.0.206-1.el8_4 | RHSA-2021:3148 |
| RHEL 8 | dotnet-host +6 | 5.0.9-1.el8_4 | RHSA-2021:3148 |
| RHEL 8 | dotnet-hostfxr-3.1 +5 | 3.1.18-1.el8_4 | RHSA-2021:3142 |
| RHEL 8 | dotnet3.1 +2 | 3.1.118-1.el8_4 | RHSA-2021:3142 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Dotnet 5 | rh-dotnet50-dotnet +3 | 5.0.206-1.el7_9 | RHSA-2021:3147 |
| Red Hat Rhel Dotnet 5 | rh-dotnet50-dotnet-host +6 | 5.0.9-1.el7_9 | RHSA-2021:3147 |
| Red Hat Rhel Dotnet 3 | rh-dotnet31-dotnet +3 | 3.1.118-1.el7_9 | RHSA-2021:3143 |
| Red Hat Rhel Dotnet 3 | rh-dotnet31-dotnet-host +6 | 3.1.18-1.el7_9 | RHSA-2021:3143 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | dotnet +3 | 5.0.206-1.0.1.el8_4 | ELSA-2021-3148 |
| Oracle Linux 8 | dotnet-host +6 | 5.0.9-1.0.1.el8_4 | ELSA-2021-3148 |
| Oracle Linux 8 | dotnet-hostfxr-3.1 +5 | 3.1.18-1.0.1.el8_4 | ELSA-2021-3142 |
| Oracle Linux 8 | dotnet-sdk-3.1 +1 | 3.1.118-1.0.1.el8_4 | ELSA-2021-3142 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| NuGet | Microsoft.AspNetCore.Authentication.JwtBearer | >= 2.1.0, < 2.1.29 | 2.1.29 | GHSA-q7cg-43mg-qp69 |
| NuGet | Microsoft.AspNetCore.Authentication.JwtBearer | >= 3.0.0, < 3.1.18 | 3.1.18 | GHSA-q7cg-43mg-qp69 |
| NuGet | Microsoft.AspNetCore.Authentication.JwtBearer | >= 5.0.0, < 5.0.9 | 5.0.9 | GHSA-q7cg-43mg-qp69 |
Advisories 7
- RHSA-2021:3148 Red Hat Security Advisory: .NET 5.0 security and bugfix update Red Hat Security Advisories (RHSA) · Oct 8, 2026
- RHSA-2021:3147 Red Hat Security Advisory: .NET 5.0 on RHEL 7 security and bugfix update Red Hat Security Advisories (RHSA) · Oct 8, 2026
- RHSA-2021:3143 Red Hat Security Advisory: .NET Core 3.1 on RHEL 7 security and bugfix update Red Hat Security Advisories (RHSA) · Oct 8, 2026
- RHSA-2021:3142 Red Hat Security Advisory: .NET Core 3.1 security and bugfix update Red Hat Security Advisories (RHSA) · Oct 8, 2026
- ELSA-2021-3142 Important: .NET Core 3.1 security and bugfix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 13, 2021
- ELSA-2021-3148 Important: .NET 5.0 security and bugfix update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 13, 2021
- MSRC-CVE-2021-34532 ASP.NET Core and Visual Studio Information Disclosure Vulnerability Microsoft Security Response Center · Aug 10, 2021
References
- ASP.NET Core and Visual Studio Information Disclosure Vulnerability vendor-advisory patch