A vulnerability was found in Keycloak before 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3496 advisory.

    Red Hat Single Sign-On 7.4 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 7.4.2 security update on RHEL 7 serves as a replacement for Red Hat     Single Sign-On 7.4.1, and includes bug fixes and enhancements, which are documented in the Release Notes     document linked to in the References.

    Security Fix(es):

    * keycloak: DoS by sending multiple simultaneous requests with a Content-Length header value greater than     actual byte count of request body (CVE-2020-10758)

    * keycloak: security headers missing on REST endpoints (CVE-2020-1728)

    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 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3495 advisory.

    Red Hat Single Sign-On 7.4 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 7.4.2 security update on RHEL 6 serves as a replacement for Red Hat     Single Sign-On 7.4.1, and includes bug fixes and enhancements, which are documented in the Release Notes     document linked to in the References.

    Security Fix(es):

    * keycloak: DoS by sending multiple simultaneous requests with a Content-Length header value greater than     actual byte count of request body (CVE-2020-10758)

    * keycloak: security headers missing on REST endpoints (CVE-2020-1728)

    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 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3497 advisory.

    Red Hat Single Sign-On 7.4 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 7.4.2 security update on RHEL 8 serves as a replacement for Red Hat     Single Sign-On 7.4.1, and includes bug fixes and enhancements, which are documented in the Release Notes     document linked to in the References.

    Security Fix(es):

    * keycloak: DoS by sending multiple simultaneous requests with a Content-Length header value greater than     actual byte count of request body (CVE-2020-10758)

    * keycloak: security headers missing on REST endpoints (CVE-2020-1728)

    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
139673	RHEL 7 : Red Hat Single Sign-On 7.4.2 security update on RHEL 7 (Important) (RHSA-2020:3496)	Nessus	Red Hat Local Security Checks	medium
139672	RHEL 6 : Red Hat Single Sign-On 7.4.2 security update on RHEL 6 (Important) (RHSA-2020:3495)	Nessus	Red Hat Local Security Checks	medium
139671	RHEL 8 : Red Hat Single Sign-On 7.4.2 security update on RHEL 8 (Important) (RHSA-2020:3497)	Nessus	Red Hat Local Security Checks	medium

Detections

Analytics

CVE-2020-10758

high

Tenable Plugins

medium

medium

medium