A flaw exists in the SAML signature validation method within the Keycloak XMLSignatureUtil class. The method incorrectly determines whether a SAML signature is for the full document or only for specific assertions based on the position of the signature in the XML document, rather than the Reference element used to specify the signed element. This flaw allows attackers to create crafted responses that can bypass the validation, potentially leading to privilege escalation or impersonation attacks.

Affected: Maven: org.keycloak:keycloak-saml-core

A flaw exists in the SAML signature validation method within the Keycloak XMLSignatureUtil class. The method incorrectly determines whether a SAML signature is for the full document or only for specific assertions based on the position of the signature in the XML document, rather than the Reference element used to specify the signed element. This flaw allows attackers to create crafted responses that can bypass the validation, potentially leading to privilege escalation or impersonation attacks.

keycloak-saml-core: Improper Verification of SAML Responses Leading to Privilege Escalation in Keycloak Keycloak: Vulnerable Redirect URI Validation Results in Open Redirec

Ein entfernter, authentisierter Angreifer kann mehrere Schwachstellen in Red Hat Single Sign On und Keycloak ausnutzen, um seine Privilegien zu erhöhen und um falsche Informationen darzustellen.