Bug 1966990 (CVE-2021-31957)

Summary:	CVE-2021-31957 dotnet: ASP.NET Core Client Disconnect Denial of Service
Product:	[Other] Security Response	Reporter:	Stefan Cornelius <scorneli>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	andrew.slice, bodavis, dbhole, kanderso, lvaleeva, maltron, omajid, rwagner, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	SDK 5.0.204, Runtime 5.0.7, SDK 3.1.116, Runtime 3.1.16	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in dotnet. The way client disconnects are handled can allow a remote, unauthenticated attacker to exploit this vulnerability to cause a denial of service against an ASP.NET Core application. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-06-09 03:04:19 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1965498, 1966163, 1966993, 1966994, 1966995, 1966996, 1966997, 1966998
Bug Blocks:	1966988

Description Stefan Cornelius 2021-06-02 10:16:30 UTC

An issue related to the handling of client disconnects has been reported in ASP.NET Core. A remote, unauthenticated attacker could exploit this vulnerability to cause a denial of service against an ASP.NET Core application.

Comment 2 errata-xmlrpc 2021-06-09 00:39:44 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:2352 https://access.redhat.com/errata/RHSA-2021:2352

Comment 3 errata-xmlrpc 2021-06-09 00:52:35 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:2353 https://access.redhat.com/errata/RHSA-2021:2353

Comment 4 errata-xmlrpc 2021-06-09 01:38:07 UTC

This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2021:2350 https://access.redhat.com/errata/RHSA-2021:2350

Comment 5 errata-xmlrpc 2021-06-09 01:41:00 UTC

This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2021:2351 https://access.redhat.com/errata/RHSA-2021:2351

Comment 6 Product Security DevOps Team 2021-06-09 03:04:19 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-31957