Bug 2057277 (CVE-2022-23635)

Summary:	CVE-2022-23635 istio: unauthenticated control plane denial of service attack
Product:	[Other] Security Response	Reporter:	Avinash Hanwate <ahanwate>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	jwendell, ovanders, psampaio, rcernich, twalsh
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	Istio 1.13.1, Istio 1.12.4, Istio 1.11.7	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in istio. This flaw allows an attacker to send a specially crafted message to isitiod, causing the control plane to crash.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-04-07 20:58:45 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:	2052108, 2057279

Description Avinash Hanwate 2022-02-23 06:48:33 UTC

Istio is an open platform to connect, manage, and secure microservices. In affected versions the Istio control plane, `istiod`, is vulnerable to a request processing error, allowing a malicious attacker that sends a specially crafted message which results in the control plane crashing. This endpoint is served over TLS port 15012, but does not require any authentication from the attacker. For simple installations, Istiod is typically only reachable from within the cluster, limiting the blast radius. However, for some deployments, especially [multicluster](https://istio.io/latest/docs/setup/install/multicluster/primary-remote/) topologies, this port is exposed over the public internet. There are no effective workarounds, beyond upgrading. Limiting network access to Istiod to the minimal set of clients can help lessen the scope of the vulnerability to some extent.

https://istio.io/latest/news/security/istio-security-2022-003
https://github.com/istio/istio/commit/5f3b5ed958ae75156f8656fe7b3794f78e94db84
https://github.com/istio/istio/security/advisories/GHSA-856q-xv3c-7f2f

Comment 2 Anten Skrabec 2022-04-05 18:44:37 UTC

*** Bug 2052107 has been marked as a duplicate of this bug. ***

Comment 3 errata-xmlrpc 2022-04-07 17:59:24 UTC

This issue has been addressed in the following products:

  OpenShift Service Mesh 2.0

Via RHSA-2022:1276 https://access.redhat.com/errata/RHSA-2022:1276

Comment 4 errata-xmlrpc 2022-04-07 18:03:57 UTC

This issue has been addressed in the following products:

  OpenShift Service Mesh 2.1

Via RHSA-2022:1275 https://access.redhat.com/errata/RHSA-2022:1275

Comment 5 Product Security DevOps Team 2022-04-07 20:58:43 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-2022-23635