Affected: Bitnami: keycloak

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC client. By tricking a user into authenticating, an attacker-controlled client can forge a valid linking URL to connect the victim's account to an attacker's external identity. This results in a full account takeover, allowing the attacker to log in as the victim.

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC client. By tricking a user into authenticating, an attacker-controlled client can forge a valid linking URL to connect the victim's account to an attacker's external identity. This results in a full account takeover, allowing the attacker to log in as the victim.

A flaw was found in the legacy client-initiated account-linking endpoint of Keycloak, a widely used open-source identity and access management solution. The mechanism used to protect the account-linking process from unauthorized requests relies on a hash that can be predicted by a malicious OIDC client. By tricking a user into authenticating, an attacker-controlled client can forge a valid linking URL to connect the victim's account to an attacker's external identity. This results in a full account takeover, allowing the attacker to log in as the victim.

keycloak: Keycloak: Privilege escalation via Time-of-Check to Time-of-Use (TOCTOU) vulnerability keycloak-services: keycloak-services: Keycloak: FGAP v2 role groups endpoint discloses hidden group metadata without group view permission keycloak-services: keycloak-services: Predictable account-linking hash enables account takeover via malicious OIDC client keycloak-services: keycloak-services: Vault-resolved rotated client secrets leaked via Admin REST API keycloak-services: keycloak-services: Unauthenticated account takeover via reset-credentials flow bypass

Ein Angreifer kann mehrere Schwachstellen in Keycloak ausnutzen, um Sicherheitsvorkehrungen zu umgehen und dadurch Benutzerkonten zu übernehmen.