Description
A vulnerability was found in all versions of Keycloak Gatekeeper, where on using lower case HTTP headers (via cURL) an attacker can bypass our Gatekeeper. Lower case headers are also accepted by some webservers (e.g. Jetty). This means there is no protection when we put a Gatekeeper in front of a Jetty server and use lowercase headers.
Remediation
References
https://bugzilla.redhat.com/show_bug.cgi?id=1868591
https://issues.jboss.org/browse/KEYCLOAK-14090
Related Vulnerabilities
CVE-2022-28154 Vulnerability in maven package org.jenkins-ci.plugins:covcomplplot
CVE-2023-33201 Vulnerability in maven package org.bouncycastle:bcprov-jdk15on
CVE-2023-24433 Vulnerability in maven package io.jenkins.plugins:macstadium-orka