CVE-2024-4540: high-severity vulnerability in keycloak
Keycloak: exposure of sensitive information in pushed authorization requests (par) kc_restart cookie
Published · Updated
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21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.5epss 0.6%
A flaw was found in Keycloak in OAuth 2.0 Pushed Authorization Requests (PAR). Client-provided parameters were found to be included in plain text in the KC_RESTART cookie returned by the authorization server's HTTP response to a `request_uri` authorization request, possibly leading to an information disclosure vulnerability.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
keycloakRed Hat · Red Hat Build of KeycloakRed Hat · Red Hat build of Keycloak 22Red Hat · Red Hat build of Keycloak 24Red Hat · Red Hat Single Sign-On 7Red Hat · Red Hat Single Sign-On 7.6 for RHEL 7Red Hat · Red Hat Single Sign-On 7.6 for RHEL 8Red Hat · Red Hat Single Sign-On 7.6 for RHEL 9Red Hat · RHEL-8 based Middleware ContainersRelated CVEs — keycloak
In the same product, most dangerous first.
CVE-2024-1635HIGHUndertow: out-of-memory error after several closed connections with wildfly-http-client protocolEPSS 4.6%CVE-2023-5685HIGHXnio: stackoverflowexception when the chain of notifier states becomes problematically bigEPSS 3.5%CVE-2024-3656HIGHKeycloak: unguarded admin rest api endpoints allows low privilege users to use administrative functionalitiesEPSS 3.3%CVE-2024-5971HIGHUndertow: response write hangs in case of java 17 tlsv1.3 newsessionticketEPSS 2.9%CVE-2024-7885HIGHUndertow: improper state management in proxy protocol parsing causes information leakageEPSS 2.6%CVE-2024-8883MEDIUMKeycloak: vulnerable redirect uri validation results in open redirecEPSS 2.1%
References
https://access.redhat.com/errata/RHSA-2024:3566https://access.redhat.com/errata/RHSA-2024:3567https://access.redhat.com/errata/RHSA-2024:3568https://access.redhat.com/errata/RHSA-2024:3570https://access.redhat.com/errata/RHSA-2024:3572https://access.redhat.com/errata/RHSA-2024:3573https://access.redhat.com/errata/RHSA-2024:3574https://access.redhat.com/errata/RHSA-2024:3575https://access.redhat.com/errata/RHSA-2024:3576https://access.redhat.com/security/cve/CVE-2024-4540https://bugzilla.redhat.com/show_bug.cgi?id=2279303