# CVE-2020-0603: ASP.NET Core Remote Code Execution Vulnerability

CVE-2020-0603 is fixed in 11 products on 1 platform, first by RHSA-2020:0130, released January 16, 2020. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2020-0603
- Priority: Urgent
- CVSS: 8.8 (Critical)
- EPSS: 0.2256
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Vendor exploitability assessment: Exploitation Less Likely
- Published: Jan 14, 2020
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-0603

## Description

<p>A remote code execution vulnerability exists in ASP.NET Core software when the software fails to handle client deleted connections.</p> <p>An attacker who successfully exploited the vulnerability could run arbitrary code in memory on the server. Exploitation of the vulnerability requires that a user perform certain actions during the connection process.</p> <p>The security update addresses the vulnerability by correcting how ASP.NET Core handles deleted connections.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | aspnetcore-runtime-3.0 RHEL 8 | 0:3.0.2-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | aspnetcore-runtime-3.0 ol 8 | 0:3.0.2-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | aspnetcore-targeting-pack-3.0 RHEL 8 | 0:3.0.2-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | aspnetcore-targeting-pack-3.0 ol 8 | 0:3.0.2-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet RHEL 8 | 0:3.0.102-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet ol 8 | 0:3.0.102-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet-apphost-pack-3.0 RHEL 8 | 0:3.0.2-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet-apphost-pack-3.0 ol 8 | 0:3.0.2-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet-host RHEL 8 | 0:3.0.2-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet-host ol 8 | 0:3.0.2-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet-hostfxr-3.0 RHEL 8 | 0:3.0.2-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet-hostfxr-3.0 ol 8 | 0:3.0.2-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet-runtime-3.0 RHEL 8 | 0:3.0.2-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet-runtime-3.0 ol 8 | 0:3.0.2-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet-sdk-3.0 RHEL 8 | 0:3.0.102-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet-sdk-3.0 ol 8 | 0:3.0.102-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet-targeting-pack-3.0 RHEL 8 | 0:3.0.2-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet-targeting-pack-3.0 ol 8 | 0:3.0.2-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | dotnet-templates-3.0 RHEL 8 | 0:3.0.102-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | dotnet-templates-3.0 ol 8 | 0:3.0.102-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |
| Linux | netstandard-targeting-pack-2.1 RHEL 8 | 0:3.0.102-2.el8_1 | [RHSA-2020:0130](https://patchblox.com/security/data/fix/linux/rhsa-2020-0130.md) | Jan 16, 2020 |
| Linux | netstandard-targeting-pack-2.1 ol 8 | 0:3.0.102-2.0.1.el8_1 | [ELSA-2020-0130](https://patchblox.com/security/data/fix/linux/elsa-2020-0130.md) | Jan 20, 2020 |

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