A flaw was found in Keycloak's OIDC component in the "checkLoginIframe," which allows unvalidated cross-origin messages. This flaw allows attackers to coordinate and send millions of requests in seconds using simple code, significantly impacting the application's availability without proper origin validation for incoming messages.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - A flaw was found in Keycloak's OIDC component in the "checkLoginIframe," which allows unvalidated cross-
    origin messages. This flaw allows attackers to coordinate and send millions of requests in seconds using
    simple code, significantly impacting the application's availability without proper origin validation for
    incoming messages. (CVE-2024-1249)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1861 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.8 on RHEL 8 serves as a replacement for Red Hat Single Sign-On     7.6.7, and includes bug fixes, security updates and     enhancements which are linked to in the References.

    Security Fix(es):

    * path transversal in redirection validation (CVE-2024-1132)

    * org.keycloak.protocol.oidc: unvalidated cross-origin messages in checkLoginIframe leads to DDoS     (CVE-2024-1249)

    * undertow: Out-of-memory Error after several closed connections with wildfly-http-client protocol     (CVE-2024-1635)

    * Authorization Bypass (CVE-2023-6544)

    * Log Injection during WebAuthn authentication or registration (CVE-2023-6484)

    For more details about the security issue(s), including the impact, a CVSS     score, and other related information, refer to the CVE page(s) listed in the     References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1860 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.8 on RHEL 7 serves as a replacement for Red Hat Single Sign-On     7.6.7, and includes bug fixes, security updates and     enhancements which are linked to in the References.

    Security Fix(es):

    * Authorization Bypass (CVE-2023-6544)
    * Log Injection during WebAuthn authentication or registration (CVE-2023-6484)
    * path transversal in redirection validation (CVE-2024-1132)
    * unvalidated cross-origin messages in checkLoginIframe leads to DDoS (CVE-2024-1249)
    * undertow: Out-of-memory Error after several closed connections with wildfly-http-client protocol     (CVE-2024-1635)

    For more details about the security issue(s), including the impact, a CVSS score, and other related     information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2024:1862 advisory.

    Red Hat Single Sign-On 7.6 is a standalone server, based on the Keycloak project, that provides     authentication and standards-based single sign-on capabilities for web and mobile applications.

    This release of Red Hat Single Sign-On 7.6.8 on RHEL 9 serves as a replacement for Red Hat Single Sign-On     7.6.7, and includes bug fixes, security updates and     enhancements which are linked to in the References.
    Security Fix(es):

    * Authorization Bypass (CVE-2023-6544)
    * Log Injection during WebAuthn authentication or registration (CVE-2023-6484)
    * path transversal in redirection validation (CVE-2024-1132)
    * unvalidated cross-origin messages in checkLoginIframe leads to DDoS (CVE-2024-1249)
    * undertow: Out-of-memory Error after several closed connections with wildfly-http-client protocol     (CVE-2024-1635)

    For more details about the security issue(s), including the impact, a CVSS     score, and other related information, refer to the CVE page(s) listed in the     References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
416795	SCA: security update for org.keycloak:keycloak-services (GHSA-m6q9-p373-g5q8)	Tenable Cloud Security	SCA Checks	high
416795	SCA: security update for org.keycloak:keycloak-services (GHSA-m6q9-p373-g5q8)	Tenable Self-Hosted Container Security	SCA Checks	high
193410	RHEL 8 : Red Hat Single Sign-On 7.6.8 security update on RHEL 8 (Important) (RHSA-2024:1861)	Nessus	Red Hat Local Security Checks	high
193409	RHEL 7 : Red Hat Single Sign-On 7.6.8 and security update on RHEL 7 (Important) (RHSA-2024:1860)	Nessus	Red Hat Local Security Checks	high
193408	RHEL 9 : Red Hat Single Sign-On 7.6.8 security update on RHEL 9 (Important) (RHSA-2024:1862)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2024-1249

high

Tenable Plugins

high

high

high

high

high