Bug 1861110 (CVE-2020-1597)

Summary:	CVE-2020-1597 dotnet: ASP.NET Core Resource Consumption 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, omajid, rwagner, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	NET Core SDK 3.1.107, NET Core Runtime 3.1.7	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in ASP.NET Core. Client disconnects were not properly handled in all circumstances. A remote, unauthenticated attacker could send specially crafted requests that would consume more disk and CPU resources than necessary potentially leading to a denial of service via resource exhaustion. The highest threat from this vulnerability is to system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-08-11 21:15:18 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:	1861112, 1861113, 1861114
Bug Blocks:	1861105

Description Stefan Cornelius 2020-07-27 20:36:13 UTC

It was discovered that ASP.NET Core did not properly handle client disconnects under all circumstances. By sending specially crafted requests to an ASP.NET Core application, a remote unauthenticated attacker could possibly exploit this flaw to consume more disk and CPU resources than necessary, possibly leading to a denial of service via resource exhaustion.

External references:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1597
https://github.com/dotnet/announcements/issues/162

Comment 2 errata-xmlrpc 2020-08-11 20:30:01 UTC

This issue has been addressed in the following products:

  .NET Core on Red Hat Enterprise Linux

Via RHSA-2020:3421 https://access.redhat.com/errata/RHSA-2020:3421

Comment 3 errata-xmlrpc 2020-08-11 20:35:20 UTC

This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:3422 https://access.redhat.com/errata/RHSA-2020:3422

Comment 4 Product Security DevOps Team 2020-08-11 21:15:18 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-2020-1597

Comment 5 Product Security DevOps Team 2020-08-12 03:15:19 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-2020-1597