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Red Hat: RHSA-2021-2064-01 Moderate: Keycloak Security in RHEL 7

red hat
Calendar Grey May 20, 2021
Dist Redhat Esm H88
The latest update for Red Hat Single Sign-On version 7.4.7 tackles important vulnerabilities that could moderately influence security for users of RHEL 7.
New Red Hat Single Sign-On 7.4.7 packages are now available for Red Hat Enterprise Linux 7

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

Summary

Red Hat Single Sign-On 7.4 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 release of Red Hat Single Sign-On 7.4.7 serves as a replacement for Red Hat Single Sign-On 7.4.6, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.
Security Fix(es):
* keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP (CVE-2021-3461)
* keycloak: Internationalized domain name (IDN) homograph attack to impersonate users (CVE-2021-3424)
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.

Topics%20covered

Topics Covered

security advisory moderate Red Hat red hat moderate impact authentication server update single sign-on SAML RHEL 7 Keycloak keycloak

References

https://access.redhat.com/security/cve/CVE-2021-3424 https://access.redhat.com/security/cve/CVE-2021-3461 https://access.redhat.com/security/updates/classification#moderate https://docs.redhat.com/en/documentation/red_hat_single_sign-on/7.4/html/release_notes/index

Package List

Red Hat Single Sign-On 7.4 for RHEL 7 Server:
Source: rh-sso7-keycloak-9.0.13-1.redhat_00006.1.el7sso.src.rpm
noarch: rh-sso7-keycloak-9.0.13-1.redhat_00006.1.el7sso.noarch.rpm rh-sso7-keycloak-server-9.0.13-1.redhat_00006.1.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


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2021:2064-01
Product: Red Hat Single Sign-On
Advisory URL: https://access.redhat.com/errata/RHSA-2021:2064
Issue date: 2021-05-20

Topic

New Red Hat Single Sign-On 7.4.7 packages are now available for Red HatEnterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Moderate. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available for each vulnerability fromthe CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory moderate Red Hat red hat moderate impact authentication server update single sign-on SAML RHEL 7 Keycloak keycloak

Relevant Releases Architectures

Red Hat Single Sign-On 7.4 for RHEL 7 Server - noarch

Bugs Fixed

1933320 - CVE-2021-3424 keycloak: Internationalized domain name (IDN) homograph attack to impersonate users1941565 - CVE-2021-3461 keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP

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