Headline
RHSA-2023:3883: Red Hat Security Advisory: Red Hat Single Sign-On 7.6.4 security update on RHEL 7
New Red Hat Single Sign-On 7.6.4 packages are now available for 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.This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
Related CVEs:
- CVE-2022-4361: Keycloak, an open-source identity and access management solution, has a cross-site scripting (XSS) vulnerability in the SAML or OIDC providers. The vulnerability can allow an attacker to execute malicious scripts by setting the AssertionConsumerServiceURL value or the redirect_uri.
- CVE-2023-1108: A flaw was found in undertow. This issue makes achieving a denial of service possible due to an unexpected handshake status updated in SslConduit, where the loop never terminates.
- CVE-2023-1664: A flaw was found in Keycloak. This flaw depends on a non-default configuration “Revalidate Client Certificate” to be enabled and the reverse proxy is not validating the certificate before Keycloak. Using this method an attacker may choose the certificate which will be validated by the server. If this happens and the KC_SPI_TRUSTSTORE_FILE_FILE variable is missing/misconfigured, any trustfile may be accepted with the logging information of "Cannot validate client certificate trust: Truststore not available". This may not impact availability, but consumer applications Integrity or Confidentiality. Considering the environment is correctly set, this flaw is avoidable by configuring the server.
- CVE-2023-2422: No description is available for this CVE.
- CVE-2023-2585: No description is available for this CVE.
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Issued:
2023-06-27
Updated:
2023-06-27
RHSA-2023:3883 - Security Advisory
- Overview
- Updated Packages
Synopsis
Important: Red Hat Single Sign-On 7.6.4 security update on RHEL 7
Type/Severity
Security Advisory: Important
Red Hat Insights patch analysis
Identify and remediate systems affected by this advisory.
View affected systems
Topic
New Red Hat Single Sign-On 7.6.4 packages are now available for 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.
Description
Red Hat Single Sign-On 7.6 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 7.6.4 on RHEL 7 serves as a replacement for Red Hat Single Sign-On 7.6.3, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.
Security Fix(es):
- keycloak: Cross-site scripting when validating URI-schemes on SAML and OIDC (CVE-2022-4361)
- undertow: Infinite loop in SslConduit during close (CVE-2023-1108)
- keycloak: oauth client impersonation (CVE-2023-2422)
- keycloak: Untrusted Certificate Validation (CVE-2023-1664)
- keycloak: client access via device auth request spoof (CVE-2023-2585)
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.
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
Affected Products
- Red Hat Single Sign-On 7.6 for RHEL 7 x86_64
Fixes
- BZ - 2151618 - CVE-2022-4361 Keycloak | RHSSO: XSS due to lax URI scheme validation
- BZ - 2174246 - CVE-2023-1108 Undertow: Infinite loop in SslConduit during close
- BZ - 2182196 - CVE-2023-1664 keycloak: Untrusted Certificate Validation
- BZ - 2191668 - CVE-2023-2422 keycloak: oauth client impersonation
- BZ - 2196335 - CVE-2023-2585 keycloak: client access via device auth request spoof
CVEs
- CVE-2022-4361
- CVE-2023-1108
- CVE-2023-1664
- CVE-2023-2422
- CVE-2023-2585
References
- https://access.redhat.com/security/updates/classification/#important
- https://access.redhat.com/articles/11258
Red Hat Single Sign-On 7.6 for RHEL 7
SRPM
rh-sso7-keycloak-18.0.8-1.redhat_00001.1.el7sso.src.rpm
SHA-256: 787261f294a961102d6343665b59e3563ffe7aa74e8eb48e9444c759c2f15fd6
x86_64
rh-sso7-keycloak-18.0.8-1.redhat_00001.1.el7sso.noarch.rpm
SHA-256: e8b719105c7dde634163596630a311f47ec271488ce9537c5f10a4683d0cc46c
rh-sso7-keycloak-server-18.0.8-1.redhat_00001.1.el7sso.noarch.rpm
SHA-256: 62933072de514d4a9fbc38cabd570b6fbf46520e73c21c13d97e6ade1096741e
The Red Hat security contact is [email protected]. More contact details at https://access.redhat.com/security/team/contact/.
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