# CVE-2021-34485: .NET Core and Visual Studio Information Disclosure Vulnerability

CVE-2021-34485 is fixed in 23 products on 1 platform, first by RHSA-2021:3142, released August 11, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-34485
- Priority: Routine
- CVSS: 5.5 (Important)
- EPSS: 0.0207
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Aug 10, 2021
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34485

## Description

ELSA-2021-3142: .NET Core 3.1 security and bugfix update (IMPORTANT)

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | aspnetcore-runtime-3.1 RHEL 8 | 0:3.1.18-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | aspnetcore-runtime-3.1 ol 8 | 0:3.1.18-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | aspnetcore-runtime-5.0 RHEL 8 | 0:5.0.9-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | aspnetcore-runtime-5.0 ol 8 | 0:5.0.9-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | aspnetcore-targeting-pack-3.1 RHEL 8 | 0:3.1.18-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | aspnetcore-targeting-pack-3.1 ol 8 | 0:3.1.18-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | aspnetcore-targeting-pack-5.0 RHEL 8 | 0:5.0.9-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | aspnetcore-targeting-pack-5.0 ol 8 | 0:5.0.9-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet RHEL 8 | 0:5.0.206-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet ol 8 | 0:5.0.206-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet-apphost-pack-3.1 RHEL 8 | 0:3.1.18-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | dotnet-apphost-pack-3.1 ol 8 | 0:3.1.18-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | dotnet-apphost-pack-5.0 RHEL 8 | 0:5.0.9-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet-apphost-pack-5.0 ol 8 | 0:5.0.9-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet-host RHEL 8 | 0:5.0.9-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet-host ol 8 | 0:5.0.9-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet-host-fxr-2.1 RHEL 8 | 0:2.1.29-1.el8_4 | [RHSA-2021:3145](https://patchblox.com/security/data/fix/linux/rhsa-2021-3145.md) | Aug 11, 2021 |
| Linux | dotnet-host-fxr-2.1 ol 8 | 0:2.1.29-1.el8_4 | [ELSA-2021-3145](https://patchblox.com/security/data/fix/linux/elsa-2021-3145.md) | Aug 12, 2021 |
| Linux | dotnet-hostfxr-3.1 RHEL 8 | 0:3.1.18-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | dotnet-hostfxr-3.1 ol 8 | 0:3.1.18-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | dotnet-hostfxr-5.0 RHEL 8 | 0:5.0.9-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet-hostfxr-5.0 ol 8 | 0:5.0.9-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet-runtime-2.1 RHEL 8 | 0:2.1.29-1.el8_4 | [RHSA-2021:3145](https://patchblox.com/security/data/fix/linux/rhsa-2021-3145.md) | Aug 11, 2021 |
| Linux | dotnet-runtime-2.1 ol 8 | 0:2.1.29-1.el8_4 | [ELSA-2021-3145](https://patchblox.com/security/data/fix/linux/elsa-2021-3145.md) | Aug 12, 2021 |
| Linux | dotnet-runtime-3.1 RHEL 8 | 0:3.1.18-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | dotnet-runtime-3.1 ol 8 | 0:3.1.18-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | dotnet-runtime-5.0 RHEL 8 | 0:5.0.9-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet-runtime-5.0 ol 8 | 0:5.0.9-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet-sdk-2.1 RHEL 8 | 0:2.1.525-1.el8_4 | [RHSA-2021:3145](https://patchblox.com/security/data/fix/linux/rhsa-2021-3145.md) | Aug 11, 2021 |
| Linux | dotnet-sdk-2.1 ol 8 | 0:2.1.525-1.el8_4 | [ELSA-2021-3145](https://patchblox.com/security/data/fix/linux/elsa-2021-3145.md) | Aug 12, 2021 |
| Linux | dotnet-sdk-2.1.5xx RHEL 8 | 0:2.1.525-1.el8_4 | [RHSA-2021:3145](https://patchblox.com/security/data/fix/linux/rhsa-2021-3145.md) | Aug 11, 2021 |
| Linux | dotnet-sdk-2.1.5xx ol 8 | 0:2.1.525-1.el8_4 | [ELSA-2021-3145](https://patchblox.com/security/data/fix/linux/elsa-2021-3145.md) | Aug 12, 2021 |
| Linux | dotnet-sdk-3.1 RHEL 8 | 0:3.1.118-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | dotnet-sdk-3.1 ol 8 | 0:3.1.118-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | dotnet-sdk-5.0 RHEL 8 | 0:5.0.206-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet-sdk-5.0 ol 8 | 0:5.0.206-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet-targeting-pack-3.1 RHEL 8 | 0:3.1.18-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | dotnet-targeting-pack-3.1 ol 8 | 0:3.1.18-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | dotnet-targeting-pack-5.0 RHEL 8 | 0:5.0.9-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet-targeting-pack-5.0 ol 8 | 0:5.0.9-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | dotnet-templates-3.1 RHEL 8 | 0:3.1.118-1.el8_4 | [RHSA-2021:3142](https://patchblox.com/security/data/fix/linux/rhsa-2021-3142.md) | Aug 11, 2021 |
| Linux | dotnet-templates-3.1 ol 8 | 0:3.1.118-1.0.1.el8_4 | [ELSA-2021-3142](https://patchblox.com/security/data/fix/linux/elsa-2021-3142.md) | Aug 13, 2021 |
| Linux | dotnet-templates-5.0 RHEL 8 | 0:5.0.206-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | dotnet-templates-5.0 ol 8 | 0:5.0.206-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |
| Linux | netstandard-targeting-pack-2.1 RHEL 8 | 0:5.0.206-1.el8_4 | [RHSA-2021:3148](https://patchblox.com/security/data/fix/linux/rhsa-2021-3148.md) | Aug 12, 2021 |
| Linux | netstandard-targeting-pack-2.1 ol 8 | 0:5.0.206-1.0.1.el8_4 | [ELSA-2021-3148](https://patchblox.com/security/data/fix/linux/elsa-2021-3148.md) | Aug 13, 2021 |

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