RedHat: RHSA-2021-2070:01 Moderate: Red Hat Single Sign-On 7.4.7 security
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):
* netty: Information disclosure via the local system temporary directory
(CVE-2021-21290)
* netty: possible request smuggling in HTTP/2 due missing validation
(CVE-2021-21295)
* 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.
Summary
Solution
Before applying the update, back up your existing installation, including
all applications, configuration files, databases and database settings, and
so on.
The References section of this erratum contains a download link (you must
log in to download the update).
References
https://access.redhat.com/security/cve/CVE-2021-3424 https://access.redhat.com/security/cve/CVE-2021-3461 https://access.redhat.com/security/cve/CVE-2021-21290 https://access.redhat.com/security/cve/CVE-2021-21295 https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/jbossnetwork/restricted/listSoftware.html?product=core.service.rhsso&downloadType=securityPatches&version=7.4 https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.4/
Package List
Topic
A security update is now available for Red Hat Single Sign-On 7.4 from theCustomer Portal.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.
Topic
Relevant Releases Architectures
Bugs Fixed
1927028 - CVE-2021-21290 netty: Information disclosure via the local system temporary directory
1933320 - CVE-2021-3424 keycloak: Internationalized domain name (IDN) homograph attack to impersonate users1937364 - CVE-2021-21295 netty: possible request smuggling in HTTP/2 due missing validation
1941565 - CVE-2021-3461 keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP
