Bug 1933320 (CVE-2021-3424)

Summary:	CVE-2021-3424 keycloak: Internationalized domain name (IDN) homograph attack to impersonate users
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	low	Docs Contact:
Priority:	low
Version:	unspecified	CC:	aboyko, aileenc, akoufoud, alazarot, almorale, anstephe, avibelli, bgeorges, bibryam, chazlett, cmoulliard, dkreling, drieden, etirelli, ganandan, ggaughan, gmalinko, hbraun, ibek, ikanello, janstey, jochrist, jpallich, jstastny, jwon, krathod, kverlaen, lthon, mnovotny, mszynkie, pantinor, pdrozd, pgallagh, pjindal, rrajasek, rruss, rsynek, sdaley, security-response-team, sthorger
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	keycloak 18.0.0	Doc Type:	If docs needed, set a value
Doc Text:	A flaw was found in keycloak, where IDN homograph attacks are possible. This flaw allows a malicious user to register a name that already exists and then tricking an admin to grant extra privileges. The highest threat from this vulnerability is to integrity.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-05-20 14:57:12 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:	1933321, 1936423

Description Pedro Sampaio 2021-02-26 17:58:57 UTC

A flaw was found in keycloak. Internationalized domain name (IDN) homograph attacks may be used to impersonate users.

References:

https://issues.redhat.com/browse/KEYCLOAK-17256

Comment 3 Paramvir jindal 2021-03-08 11:43:17 UTC

Acknowledgments:

Name: Kristian Klausen

Comment 6 errata-xmlrpc 2021-05-20 12:42:09 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.4 for RHEL 6

Via RHSA-2021:2063 https://access.redhat.com/errata/RHSA-2021:2063

Comment 7 errata-xmlrpc 2021-05-20 12:43:10 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.4 for RHEL 8

Via RHSA-2021:2065 https://access.redhat.com/errata/RHSA-2021:2065

Comment 8 errata-xmlrpc 2021-05-20 12:43:43 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.4 for RHEL 7

Via RHSA-2021:2064 https://access.redhat.com/errata/RHSA-2021:2064

Comment 9 Product Security DevOps Team 2021-05-20 14:57:12 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-2021-3424

Comment 10 errata-xmlrpc 2021-05-20 17:50:17 UTC

This issue has been addressed in the following products:

  Red Hat Single Sign-On 7.4.7

Via RHSA-2021:2070 https://access.redhat.com/errata/RHSA-2021:2070