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Red Hat Security Advisory 2021-3527-01

Red Hat Security Advisory 2021-3527-01
Posted Sep 14, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-3527-01 - 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 7.4.9 serves as a replacement for Red Hat Single Sign-On 7.4.8, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include a denial of service vulnerability.

tags | advisory, web, denial of service
systems | linux, redhat
advisories | CVE-2020-28491, CVE-2020-35509, CVE-2021-3513, CVE-2021-3632, CVE-2021-3637
MD5 | af0494392d128c7be8d00b3cf7a91814

Red Hat Security Advisory 2021-3527-01

Change Mirror Download
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=====================================================================
Red Hat Security Advisory

Synopsis: Moderate: Red Hat Single Sign-On 7.4.9 security update on RHEL 6
Advisory ID: RHSA-2021:3527-01
Product: Red Hat Single Sign-On
Advisory URL: https://access.redhat.com/errata/RHSA-2021:3527
Issue date: 2021-09-14
CVE Names: CVE-2020-28491 CVE-2020-35509 CVE-2021-3513
CVE-2021-3632 CVE-2021-3637
=====================================================================

1. Summary:

New Red Hat Single Sign-On 7.4.9 packages are now available for Red Hat
Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact
of Moderate. 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 7.4 for RHEL 6 Server - noarch

3. Description:

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 7.4.9 serves as a replacement for
Red Hat Single Sign-On 7.4.8, and includes bug fixes and enhancements,
which are documented in the Release Notes document linked to in the
References.

Security Fix(es):

* jackson-dataformat-cbor: Unchecked allocation of byte buffer can cause a
java.lang.OutOfMemoryError exception (CVE-2020-28491)

* keycloak: Brute force attack is possible even after the account lockout
(CVE-2021-3513)

* keycloak: Anyone can register a new device when there is no device
registered for passwordless login (CVE-2021-3632)

* keycloak-model-infinispan: authenticationSessions map in
RootAuthenticationSessionEntity grows boundlessly could lead to a DoS
attack (CVE-2021-3637)

* keycloak: X509 Direct Grant Auth does not verify certificate timestamp
validity (CVE-2020-35509)

For more details about the security issue(s), including the impact, a CVSS
score, acknowledgments, 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/):

1912427 - CVE-2020-35509 keycloak: X509 Direct Grant Auth does not verify certificate timestamp validity
1930423 - CVE-2020-28491 jackson-dataformat-cbor: Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception
1953439 - CVE-2021-3513 keycloak: Brute force attack is possible even after the account lockout
1978196 - CVE-2021-3632 keycloak: Anyone can register a new device when there is no device registered for passwordless login
1979638 - CVE-2021-3637 keycloak-model-infinispan: authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly could lead to a DoS attack

6. Package List:

Red Hat Single Sign-On 7.4 for RHEL 6 Server:

Source:
rh-sso7-keycloak-9.0.15-1.redhat_00002.1.el6sso.src.rpm

noarch:
rh-sso7-keycloak-9.0.15-1.redhat_00002.1.el6sso.noarch.rpm
rh-sso7-keycloak-server-9.0.15-1.redhat_00002.1.el6sso.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-2020-28491
https://access.redhat.com/security/cve/CVE-2020-35509
https://access.redhat.com/security/cve/CVE-2021-3513
https://access.redhat.com/security/cve/CVE-2021-3632
https://access.redhat.com/security/cve/CVE-2021-3637
https://access.redhat.com/security/updates/classification/#moderate
https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.4/html/release_notes/index

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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