RHSA-2019:3046 - Security Advisory

Topic

New Red Hat Single Sign-On 7.3.4 packages are now available for Red Hat Enterprise Linux 8.

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 7.3 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 7.3.4 on RHEL 8 serves as a replacement for Red Hat Single Sign-On 7.3.3, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.

Security Fix(es):

• keycloak: cross-realm user access auth bypass (CVE-2019-14832)
• keycloak: adapter endpoints are exposed via arbitrary URLs (CVE-2019-14820)
• jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server via crafted JSON message (CVE-2019-12814)
• jackson-databind: default typing mishandling leading to remote code execution (CVE-2019-14379)
• jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server (CVE-2019-12086)
• undertow: Information leak in requests for directories without trailing slashes (CVE-2019-10184)

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 7.3 for RHEL 8 x86_64

Fixes

• BZ - 1649870 - CVE-2019-14820 keycloak: adapter endpoints are exposed via arbitrary URLs
• BZ - 1713068 - CVE-2019-10184 undertow: Information leak in requests for directories without trailing slashes
• BZ - 1713468 - CVE-2019-12086 jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server.
• BZ - 1725795 - CVE-2019-12814 jackson-databind: polymorphic typing issue allows attacker to read arbitrary local files on the server via crafted JSON message.
• BZ - 1737517 - CVE-2019-14379 jackson-databind: default typing mishandling leading to remote code execution
• BZ - 1749487 - CVE-2019-14832 keycloak: cross-realm user access auth bypass

CVEs

• CVE-2019-10184
• CVE-2019-12086
• CVE-2019-12814
• CVE-2019-14379
• CVE-2019-14820
• CVE-2019-14832

References

• https://access.redhat.com/security/updates/classification/#important
• https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.3/