Bug 1933320 (CVE-2021-3424) - CVE-2021-3424 keycloak: Internationalized domain name (IDN) homograph attack to impersonate users
Summary: CVE-2021-3424 keycloak: Internationalized domain name (IDN) homograph attack ...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-3424
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks: 1933321 1936423
TreeView+ depends on / blocked
 
Reported: 2021-02-26 17:58 UTC by Pedro Sampaio
Modified: 2022-04-25 18:45 UTC (History)
40 users (show)

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.
Clone Of:
Environment:
Last Closed: 2021-05-20 14:57:12 UTC
Embargoed:

Attachments (Terms of Use)

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
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