Bug 1996915 (CVE-2021-39156)

Summary:	CVE-2021-39156 istio/istio: HTTP request with fragment in URI can bypass authorization mechanisms
Product:	[Other] Security Response	Reporter:	Mark Cooper <mcooper>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	high	Docs Contact:
Priority:	high
Version:	unspecified	CC:	jwendell, kconner, rcernich, security-response-team, twalsh
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	istio 1.11.1, istio 1.10.4, istio 1.9.8	Doc Type:	If docs needed, set a value
Doc Text:	An authorization bypass vulnerability was found in istio/istio. An HTTP request is incorrectly evaluated when a URI #fragment is specified. This flaw allows an attacker to bypass an Istio URI-based authorization rule. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-08-25 15:34:54 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:	1996912

Description Mark Cooper 2021-08-24 01:59:38 UTC

Istio through 1.11.0 contains a vulnerability where an HTTP request with a URI #fragment can bypass authorization mechanisms. A subset of this security issue is address in the Envoy proxy, CVE-2021-32779.

Comment 2 errata-xmlrpc 2021-08-25 09:34:40 UTC

This issue has been addressed in the following products:

  OpenShift Service Mesh 1.1

Via RHSA-2021:3273 https://access.redhat.com/errata/RHSA-2021:3273

Comment 3 errata-xmlrpc 2021-08-25 09:35:27 UTC

This issue has been addressed in the following products:

  OpenShift Service Mesh 2.0

Via RHSA-2021:3272 https://access.redhat.com/errata/RHSA-2021:3272

Comment 4 Product Security DevOps Team 2021-08-25 15:34:54 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-2021-39156