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keycloak: timing attack in JWS signature verification

🗓️ 04 Apr 2017 17:26:43Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 4 Views

Keycloak's HMAC verification for JSON Web Signatures is not constant time, risking timing attacks.

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Refs
OSOS VersionArchitecturePackagePackage VersionFilename
Red Hat Enterprise Linux6x86_64rh-sso70:1-2.jbcs.el6rh-sso7-0:1-2.jbcs.el6.x86_64.rpm
Red Hat Enterprise Linux6anyrh-sso7-freemarker0:2.3.23-1.redhat_2.2.jbcs.el6rh-sso7-freemarker-0:2.3.23-1.redhat_2.2.jbcs.el6.noarch.rpm
Red Hat Enterprise Linux6anyrh-sso7-javapackages-tools0:3.4.1-5.15.3.jbcs.el6rh-sso7-javapackages-tools-0:3.4.1-5.15.3.jbcs.el6.noarch.rpm
Red Hat Enterprise Linux6anyrh-sso7-keycloak0:2.5.5-2.Final_redhat_1.1.jbcs.el6rh-sso7-keycloak-0:2.5.5-2.Final_redhat_1.1.jbcs.el6.noarch.rpm
Red Hat Enterprise Linux6anyrh-sso7-keycloak-server0:2.5.5-2.Final_redhat_1.1.jbcs.el6rh-sso7-keycloak-server-0:2.5.5-2.Final_redhat_1.1.jbcs.el6.noarch.rpm
Red Hat Enterprise Linux6x86_64rh-sso7-libunix-dbus-java0:0.8.0-2.jbcs.el6rh-sso7-libunix-dbus-java-0:0.8.0-2.jbcs.el6.x86_64.rpm
Red Hat Enterprise Linux6x86_64rh-sso7-libunix-dbus-java-debuginfo0:0.8.0-2.jbcs.el6rh-sso7-libunix-dbus-java-debuginfo-0:0.8.0-2.jbcs.el6.x86_64.rpm
Red Hat Enterprise Linux6x86_64rh-sso7-libunix-dbus-java-devel0:0.8.0-2.jbcs.el6rh-sso7-libunix-dbus-java-devel-0:0.8.0-2.jbcs.el6.x86_64.rpm
Red Hat Enterprise Linux6anyrh-sso7-liquibase0:3.4.1-2.redhat_2.1.jbcs.el6rh-sso7-liquibase-0:3.4.1-2.redhat_2.1.jbcs.el6.noarch.rpm
Red Hat Enterprise Linux6anyrh-sso7-liquibase-core0:3.4.1-2.redhat_2.1.jbcs.el6rh-sso7-liquibase-core-0:3.4.1-2.redhat_2.1.jbcs.el6.noarch.rpm
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18 Mar 2026 01:43Current
5.7Medium risk
Vulners AI Score5.7
CVSS 24.3
CVSS 35.9
EPSS0.00671
4