- Issued:
- 2021-09-14
- Updated:
- 2021-09-14
RHSA-2021:3534 - Security Advisory
Synopsis
Moderate: Red Hat Single Sign-On 7.4.9 security update
Type/Severity
Security Advisory: Moderate
Topic
A security update is now available for Red Hat Single Sign-On 7.4 from the Customer Portal.
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.
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):
- undertow: buffer leak on incoming websocket PONG message may lead to DoS (CVE-2021-3690)
- 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)
- undertow: HTTP2SourceChannel fails to write final frame under some circumstances may lead to DoS (CVE-2021-3597)
- 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)
- jakarta-el: ELParserTokenManager enables invalid EL expressions to be evaluate (CVE-2021-28170)
- apache-commons-io: Limited path traversal in Apache Commons IO 2.2 to 2.6 (CVE-2021-29425)
- keycloak: X509 Direct Grant Auth does not verify certificate timestamp validity (CVE-2020-35509)
- wildfly-core: Invalid Sensitivity Classification of Vault Expression (CVE-2021-3644)
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.
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).
Affected Products
- Red Hat Single Sign-On Text-Only Advisories x86_64
Fixes
- BZ - 1912427 - CVE-2020-35509 keycloak: X509 Direct Grant Auth does not verify certificate timestamp validity
- BZ - 1930423 - CVE-2020-28491 jackson-dataformat-cbor: Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError exception
- BZ - 1948752 - CVE-2021-29425 apache-commons-io: Limited path traversal in Apache Commons IO 2.2 to 2.6
- BZ - 1953439 - CVE-2021-3513 keycloak: Brute force attack is possible even after the account lockout
- BZ - 1965497 - CVE-2021-28170 jakarta-el: ELParserTokenManager enables invalid EL expressions to be evaluate
- BZ - 1970930 - CVE-2021-3597 undertow: HTTP2SourceChannel fails to write final frame under some circumstances may lead to DoS
- BZ - 1976052 - CVE-2021-3644 wildfly-core: Invalid Sensitivity Classification of Vault Expression
- BZ - 1978196 - CVE-2021-3632 keycloak: Anyone can register a new device when there is no device registered for passwordless login
- BZ - 1979638 - CVE-2021-3637 keycloak-model-infinispan: authenticationSessions map in RootAuthenticationSessionEntity grows boundlessly could lead to a DoS attack
- BZ - 1991299 - CVE-2021-3690 undertow: buffer leak on incoming websocket PONG message may lead to DoS
CVEs
References
- 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/
- https://access.redhat.com/documentation/en-us/red_hat_single_sign-on/7.4/html/release_notes/index
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.