Skip to content
Fencer Intel
high 7.5

CVE-2020-0602 json

Denial of service in ASP.NET Core

published 6y ago modified 2mo ago also BIT-aspnet-core-2020-0602 , EUVD-2022-1891 , GHSA-23cv-jh4v-vffm

cvss
7.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
8.1%
EPSS 8.1% chance of exploitation in 30 days, percentile 94%
public exploits
0
none known

Summary

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

Patch / fix

  • nuget Microsoft.AspNetCore.All 2.1.15
  • nuget Microsoft.AspNetCore.App 2.1.15, 3.0.1, 3.1.1
  • nuget Microsoft.AspNetCore.Http.Connections 1.0.15
  • nuget Microsoft.AspNetCore.App.Runtime.linux-arm 3.1.1
  • nuget Microsoft.AspNetCore.App.Runtime.linux-arm64 3.1.1
  • nuget Microsoft.AspNetCore.App.Runtime.linux-musl-x64 3.1.1
  • nuget Microsoft.AspNetCore.App.Runtime.linux-x64 3.1.1
  • nuget Microsoft.AspNetCore.App.Runtime.osx-x64 3.1.1
  • nuget Microsoft.AspNetCore.App.Runtime.win-arm 3.1.1
  • nuget Microsoft.AspNetCore.App.Runtime.win-x64 3.1.1
  • nuget Microsoft.AspNetCore.App.Runtime.win-x86 3.1.1
  • bitnami aspnet-core 2.1.1, 3.0.1, 3.1.1
  • rh-dotnet30-dotnet RHEL 3.0 DOTNET 3.0.102-3.el7
  • rh-dotnet31-dotnet RHEL 3.1 DOTNET 3.1.101-4.el7
  • rh-dotnet30-dotnet-host RHEL 3.0 DOTNET 3.0.2-3.el7
  • rh-dotnet31-dotnet-host RHEL 3.1 DOTNET 3.1.1-4.el7
  • rh-dotnet30-dotnet-sdk-3.0 RHEL 3.0 DOTNET 3.0.102-3.el7
  • rh-dotnet31-dotnet-sdk-3.1 RHEL 3.1 DOTNET 3.1.101-4.el7
  • rh-dotnet30-dotnet-hostfxr-3.0 RHEL 3.0 DOTNET 3.0.2-3.el7
  • rh-dotnet30-dotnet-runtime-3.0 RHEL 3.0 DOTNET 3.0.2-3.el7

red hat advisories RHSA-2020:0134RHSA-2020:0130

Is CVE-2020-0602 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2020-0602 updated cvss 7.5

dotnet: Denial of service via backpressure issue

  • Red Hat .NET Core on Red Hat Enterprise Linux ComputeNode (v. 7) rh-dotnet30-dotnet 3.0.102-3.el7, rh-dotnet31-dotnet 3.1.101-4.el7, rh-dotnet30-dotnet-host 3.0.2-3.el7, rh-dotnet31-dotnet-host 3.1.1-4.el7, rh-dotnet30-dotnet-sdk-3.0 3.0.102-3.el7, rh-dotnet31-dotnet-sdk-3.1 3.1.101-4.el7, +16 more Red Hat .NET Core on Red Hat Enterprise Linux Server (v. 7) rh-dotnet30-dotnet 3.0.102-3.el7, rh-dotnet31-dotnet 3.1.101-4.el7, rh-dotnet30-dotnet-host 3.0.2-3.el7, rh-dotnet31-dotnet-host 3.1.1-4.el7, rh-dotnet30-dotnet-sdk-3.0 3.0.102-3.el7, rh-dotnet31-dotnet-sdk-3.1 3.1.101-4.el7, +16 more Red Hat .NET Core on Red Hat Enterprise Linux Workstation (v. 7) rh-dotnet30-dotnet 3.0.102-3.el7, rh-dotnet31-dotnet 3.1.101-4.el7, rh-dotnet30-dotnet-host 3.0.2-3.el7, rh-dotnet31-dotnet-host 3.1.1-4.el7, rh-dotnet30-dotnet-sdk-3.0 3.0.102-3.el7, rh-dotnet31-dotnet-sdk-3.1 3.1.101-4.el7, +16 more
    fixed: vendor fix RHSA-2020:0134
  • Red Hat Enterprise Linux AppStream (v. 8) dotnet 3.0.102-2.el8_1, dotnet-host 3.0.2-2.el8_1, dotnet3.0 3.0.102-2.el8_1, dotnet-sdk-3.0 3.0.102-2.el8_1, dotnet-hostfxr-3.0 3.0.2-2.el8_1, dotnet-runtime-3.0 3.0.2-2.el8_1, +6 more
    fixed: vendor fix RHSA-2020:0130
  • Red Hat .NET Core 2.1 on Red Hat Enterprise Linux rh-dotnet21, rh-dotnet21-runtime Red Hat .NET Core 2.2 on Red Hat Enterprise Linux rh-dotnet22, rh-dotnet22-runtime Red Hat Enterprise Linux 8 dotnet, dotnet3.1, dotnet-host, dotnet-sdk-2.1, dotnet-sdk-3.1, dotnet-hostfxr-3.1, +11 more
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

8.15% chance of exploitation in the next 30 days, higher than 94% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
OSV 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
nuget Microsoft.AspNetCore.All
>=2.1.0, <2.1.15
2.1.15
nuget Microsoft.AspNetCore.App
>=3.1.0, <3.1.1
>=3.0.0, <3.0.1
>=2.1.0, <2.1.15
3.1.1
3.0.1
2.1.15
nuget Microsoft.AspNetCore.Http.Connections
>=1.0.0, <1.0.15
1.0.15
nuget Microsoft.AspNetCore.App.Runtime.linux-arm
>=3.1.0, <3.1.1
3.1.1
nuget Microsoft.AspNetCore.App.Runtime.linux-arm64
>=3.1.0, <3.1.1
3.1.1
nuget Microsoft.AspNetCore.App.Runtime.linux-musl-x64
>=3.1.0, <3.1.1
3.1.1
nuget Microsoft.AspNetCore.App.Runtime.linux-x64
>=3.1.0, <3.1.1
3.1.1
nuget Microsoft.AspNetCore.App.Runtime.osx-x64
>=3.1.0, <3.1.1
3.1.1
nuget Microsoft.AspNetCore.App.Runtime.win-arm
>=3.1.0, <3.1.1
3.1.1
nuget Microsoft.AspNetCore.App.Runtime.win-x64
>=3.1.0, <3.1.1
3.1.1
nuget Microsoft.AspNetCore.App.Runtime.win-x86
>=3.1.0, <3.1.1
3.1.1
bitnami aspnet-core
>=2.1.0, <2.1.1
>=3.0.0, <3.0.1
>=3.1.0, <3.1.1
2.1.1
3.0.1
3.1.1

Affected products

  • Microsoft ASP.NET Core

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.