CVE-2024-4540

Keycloak: exposure of sensitive information in pushed authorization requests (par) kc_restart cookie

Description

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.

Remediation

Workaround:

  • Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.63%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat Build of Keycloak
Affected: Red Hat Red Hat Build of Keycloak
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 22
Affected: Red Hat Red Hat build of Keycloak 24
Affected: Red Hat Red Hat build of Keycloak 24
Affected: Red Hat Red Hat build of Keycloak 24
Affected: Red Hat Red Hat Single Sign-On 7
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 7
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 8
Affected: Red Hat Red Hat Single Sign-On 7.6 for RHEL 9
Affected: Red Hat RHEL-8 based Middleware Containers
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2024:3566 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3567 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3568 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3570 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3572 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3573 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3574 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3575 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3576 vendor advisory
https://access.redhat.com/security/cve/CVE-2024-4540 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2279303 issue tracking

Frequently Asked Questions

What is the severity of CVE-2024-4540?
CVE-2024-4540 has been scored as a high severity vulnerability.
How to fix CVE-2024-4540?
As a workaround for remediating CVE-2024-4540: Mitigation for this issue is either not available or the currently available options don't meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Is CVE-2024-4540 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-4540 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-4540?
CVE-2024-4540 affects Red Hat Red Hat Build of Keycloak, Red Hat Red Hat Build of Keycloak, Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 22, Red Hat Red Hat build of Keycloak 24, Red Hat Red Hat build of Keycloak 24, Red Hat Red Hat build of Keycloak 24, Red Hat Red Hat Single Sign-On 7, Red Hat Red Hat Single Sign-On 7.6 for RHEL 7, Red Hat Red Hat Single Sign-On 7.6 for RHEL 8, Red Hat Red Hat Single Sign-On 7.6 for RHEL 9, Red Hat RHEL-8 based Middleware Containers.
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