Bug 1802542 (CVE-2020-8664) - CVE-2020-8664 envoy: Incorrect Access Control when using SDS with Combined Validation Context
Summary: CVE-2020-8664 envoy: Incorrect Access Control when using SDS with Combined Va...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2020-8664
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1802569
TreeView+ depends on / blocked
 
Reported: 2020-02-13 11:37 UTC by Dhananjay Arunesh
Modified: 2021-02-16 20:34 UTC (History)
3 users (show)

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.
Clone Of:
Environment:
Last Closed: 2020-03-05 22:31:47 UTC
Embargoed:

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System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:0734 0 None None None 2020-03-05 19:00:19 UTC

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
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