Bug 1802542 (CVE-2020-8664)

Summary:	CVE-2020-8664 envoy: Incorrect Access Control when using SDS with Combined Validation Context
Product:	[Other] Security Response	Reporter:	Dhananjay Arunesh <darunesh>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	kconner, rcernich, security-response-team
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	envoy 1.13.1	Doc Type:	If docs needed, set a value
Doc Text:	An access control bypass vulnerability was found in envoy. When the same TLS secret is used across multiple resources, the client's data, such as the subject alternative name or hash, is not validated. This flaw could lead to a possible bypass of security restrictions.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-03-05 22:31:47 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:
Bug Blocks:	1802569

Description Dhananjay Arunesh 2020-02-13 11:37:34 UTC

A vulnerability was found in Envoy, where using SDS with Combined Validation Context Using the same secret (e.g. trusted CA) across many resources together with the combined validation context could lead to the “static” part of the validation context to be not applied, even though it was visible in the active config dump.

Comment 2 Mark Cooper 2020-02-24 04:41:40 UTC

Acknowledgments:

Name: The Envoy Security Team

Comment 3 errata-xmlrpc 2020-03-05 19:00:18 UTC

This issue has been addressed in the following products:

  OpenShift Service Mesh 1.0

Via RHSA-2020:0734 https://access.redhat.com/errata/RHSA-2020:0734

Comment 4 Product Security DevOps Team 2020-03-05 22:31:47 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-2020-8664

Comment 5 Mark Cooper 2020-03-08 22:18:58 UTC

External References:

https://github.com/envoyproxy/envoy/security/advisories/GHSA-3x9m-pgmg-xpx8