Red Hat Security Advisory 2021-5218-02 - Red Hat Single Sign-On 7.5 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This is an asynchronous patch for Red Hat Single Sign-On 7.5, and includes one security fix.
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Red Hat Security Advisory
Synopsis: Important: Red Hat Single Sign-On 7.5.0 security update on RHEL 7
Advisory ID: RHSA-2021:5218-01
Product: Red Hat Single Sign-On
Advisory URL: https://access.redhat.com/errata/RHSA-2021:5218
Issue date: 2021-12-20
CVE Names: CVE-2021-4133
====================================================================
1. Summary:
A security update is now available for Red Hat Single Sign-On 7.5 on Red
Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.
2. Relevant releases/architectures:
Red Hat Single Sign-On 7.5 for RHEL 7 Server - noarch
3. Description:
Red Hat Single Sign-On 7.5 is a standalone server, based on the Keycloak
project, that provides authentication and standards-based single sign-on
capabilities for web and mobile applications.
This is an asynchronous patch for Red Hat Single Sign-On 7.5, and includes
one security fix.
Security Fix:
* keycloak: Incorrect authorization allows unpriviledged users to create
other users (CVE-2021-4133)
For more details about the security issue(s), including the impact, a CVSS
score, and other related information, refer to the CVE page(s) listed in
the References section.
4. Solution:
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
For details on how to apply this update, refer to:
https://access.redhat.com/articles/11258
5. Bugs fixed (https://bugzilla.redhat.com/):
2033602 - CVE-2021-4133 Keycloak: Incorrect authorization allows unpriviledged users to create other users
6. Package List:
Red Hat Single Sign-On 7.5 for RHEL 7 Server:
Source:
rh-sso7-keycloak-15.0.2-3.redhat_00002.1.el7sso.src.rpm
noarch:
rh-sso7-keycloak-15.0.2-3.redhat_00002.1.el7sso.noarch.rpm
rh-sso7-keycloak-server-15.0.2-3.redhat_00002.1.el7sso.noarch.rpm
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/
7. References:
https://access.redhat.com/security/cve/CVE-2021-4133
https://access.redhat.com/security/updates/classification/#important
https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.5/
8. Contact:
The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2021 Red Hat, Inc.
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