(RHSA-2023:1044) Important: Red Hat Single Sign-On 7.6.2 security update on RHEL 8

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 7.6.2 on RHEL 8 serves as a replacement for Red Hat Single Sign-On 7.6.1, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References.

Security Fix(es):

• keycloak: XSS on impersonation under specific circumstances (CVE-2022-1438)
• Moment.js: Path traversal in moment.locale (CVE-2022-24785)
• keycloak: missing email notification template allowlist (CVE-2022-1274)
• keycloak: minimist: prototype pollution (CVE-2021-44906)
• moment: inefficient parsing algorithm resulting in DoS (CVE-2022-31129)
• undertow: DoS can be achieved as Undertow server waits for the LAST_CHUNK forever for EJB invocations (CVE-2022-2764)
• snakeyaml: Denial of Service due to missing nested depth limitation for collections (CVE-2022-25857)
• loader-utils: loader-utils:Regular expression denial of service (CVE-2022-37603)
• keycloak: Session takeover with OIDC offline refreshtokens (CVE-2022-3916)
• keycloak: path traversal via double URL encoding (CVE-2022-3782)
• snakeyaml: Uncaught exception in org.yaml.snakeyaml.composer.Composer.composeSequenceNode (CVE-2022-38749)
• snakeyaml: Uncaught exception in java.base/java.util.regex.Pattern$Ques.match (CVE-2022-38751)
• snakeyaml: Uncaught exception in org.yaml.snakeyaml.constructor.BaseConstructor.constructObject (CVE-2022-38750)
• keycloak: Client Registration endpoint does not check token revocation (CVE-2023-0091)
• keycloak: glob-parent: Regular Expression Denial of Service (CVE-2021-35065)
• json5: Prototype Pollution in JSON5 via Parse Method (CVE-2022-46175)
• keycloak: keycloak: user impersonation via stolen uuid code (CVE-2023-0264)
• snakeyaml: Constructor Deserialization Remote Code Execution (CVE-2022-1471)
• CXF: Apache CXF: SSRF Vulnerability (CVE-2022-46364)
• rcue-bootstrap: bootstrap: Cross-site Scripting (XSS) in the data-container property of tooltip (CVE-2018-14042)
• jettison: If the value in map is the map’s self, the new new JSONObject(map) cause StackOverflowError which may lead to dos (CVE-2022-45693)
• sshd-common: mina-sshd: Java unsafe deserialization vulnerability (CVE-2022-45047)
• jettison: memory exhaustion via user-supplied XML or JSON data (CVE-2022-40150)
• jettison: parser crash by stackoverflow (CVE-2022-40149)
• jackson-databind: use of deeply nested arrays (CVE-2022-42004)
• jackson-databind: deep wrapper array nesting wrt UNWRAP_SINGLE_VALUE_ARRAYS (CVE-2022-42003)
• jquery: Cross-site scripting due to improper injQuery.htmlPrefilter method (CVE-2020-11022)
• jquery: Passing HTML containing <option> elements to manipulation methods could result in untrusted code execution (CVE-2020-11023)
• bootstrap: Cross-site Scripting (XSS) in the collapse data-parent attribute (CVE-2018-14040)
• jquery: Prototype pollution in object’s prototype leading to denial of service, remote code execution, or property injection (CVE-2019-11358)
• CXF: Apache CXF: directory listing / code exfiltration (CVE-2022-46363)
• keycloak: reflected XSS attack (CVE-2022-4137)

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.