A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources.

Affected: Maven: org.keycloak:keycloak-services

A flaw was found in Keycloak, an open-source identity and access management solution. When a client application is configured to accept broad redirect Uniform Resource Identifiers (URIs), a remote attacker can manipulate the authentication process by crafting a special web address. If a user clicks this link, the client application might incorrectly prioritize attacker-controlled information over legitimate data. This vulnerability, known as HTTP parameter pollution, could allow an attacker to bypass security measures or gain unauthorized access to resources.

keycloak: Keycloak: Privilege escalation through hardcoded role mapper injection keycloak: org.keycloak.protocol.oidc: HTTP Parameter Pollution in OIDC redirect URI allows response parameter duplication - #GHI-604 keycloak: Keycloak: Security policy bypass in JWE-encrypted request object processing keycloak: Keycloak: Brute-force protection bypass in CIBA flow keycloak-policy-enforcer: Keycloak Policy Enforcer: Authorization bypass via incorrect URI comparison keycloak-admin-ui: keycloak-admin-ui:Admin UI extension brute-force-user endpoint bypasses FGAPv2 user view restrictions keycloak-services: keycloak-services: FGAP v2 client scope assignment bypass via ClientResource keycloak-services: keycloak: FGAP v2 parent group children endpoint bypasses per-child view permission filter keycloak-services: keycloak-services: DCR protocol mapper type-swap policy bypass allows privilege escalation keycloak-services: keycloak-services: Authorization bypass via unnormalized URI matching in PathMatcher keycloak-services: keycloak-services: LDAP entry-DN user search bypasses configured users DN boundary keycloak-services: keycloak-services: Default DCR policy allows role forgery via User Property mappers io.quarkus/quarkus-rest: io.quarkus/quarkus-vertx-http: io.quarkus.resteasy.reactive/resteasy-reactive: Quarkus REST - Unbounded multipart MIME part-header accumulation allows remote OOM denial of service keycloak-services: keycloak-services: SAML IdP-initiated broker login bypasses link…

Ein Angreifer kann mehrere Schwachstellen in Keycloak ausnutzen, um seine Privilegien zu erhöhen, um Informationen offenzulegen, um Sicherheitsvorkehrungen zu umgehen und um einen Denial of Service Angriff durchzuführen.