A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The highest threat from this vulnerability is to confidentiality.

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

  - A flaw was found in keycloak where a brute force attack is possible even when the permanent lockout
    feature is enabled. This is due to a wrong error message displayed when wrong credentials are entered. The
    highest threat from this vulnerability is to confidentiality. (CVE-2021-3513)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:3529 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 7.4.9 serves as a replacement for Red Hat Single Sign-On 7.4.8, and     includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the     References.

    Security Fix(es):

    * jackson-dataformat-cbor:  Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError     exception (CVE-2020-28491)

    * keycloak: Brute force attack is possible even after the account lockout (CVE-2021-3513)

    * keycloak: Anyone can register a new device when there is no device registered for passwordless login     (CVE-2021-3632)

    * keycloak-model-infinispan: authenticationSessions map in RootAuthenticationSessionEntity grows     boundlessly could lead to a DoS attack (CVE-2021-3637)

    * keycloak: X509 Direct Grant Auth does not verify certificate timestamp validity (CVE-2020-35509)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, 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-2021:3527 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 7.4.9 serves as a replacement for Red Hat Single Sign-On 7.4.8, and     includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the     References.

    Security Fix(es):

    * jackson-dataformat-cbor:  Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError     exception (CVE-2020-28491)

    * keycloak: Brute force attack is possible even after the account lockout (CVE-2021-3513)

    * keycloak: Anyone can register a new device when there is no device registered for passwordless login     (CVE-2021-3632)

    * keycloak-model-infinispan: authenticationSessions map in RootAuthenticationSessionEntity grows     boundlessly could lead to a DoS attack (CVE-2021-3637)

    * keycloak: X509 Direct Grant Auth does not verify certificate timestamp validity (CVE-2020-35509)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, 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-2021:3528 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 7.4.9 serves as a replacement for Red Hat Single Sign-On 7.4.8, and     includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the     References.

    Security Fix(es):

    * jackson-dataformat-cbor:  Unchecked allocation of byte buffer can cause a java.lang.OutOfMemoryError     exception (CVE-2020-28491)

    * keycloak: Brute force attack is possible even after the account lockout (CVE-2021-3513)

    * keycloak: Anyone can register a new device when there is no device registered for passwordless login     (CVE-2021-3632)

    * keycloak-model-infinispan: authenticationSessions map in RootAuthenticationSessionEntity grows     boundlessly could lead to a DoS attack (CVE-2021-3637)

    * keycloak: X509 Direct Grant Auth does not verify certificate timestamp validity (CVE-2020-35509)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, 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
420672	SCA: security update for org.keycloak:keycloak-parent (GHSA-xv7h-95r7-595j)	Tenable Cloud Security	SCA Checks	high
420672	SCA: security update for org.keycloak:keycloak-parent (GHSA-xv7h-95r7-595j)	Tenable Self-Hosted Container Security	SCA Checks	high
165157	RHEL 8 : Red Hat Single Sign-On 7.4.9 security update on RHEL 8 (Moderate) (RHSA-2021:3529)	Nessus	Red Hat Local Security Checks	high
165141	RHEL 6 : Red Hat Single Sign-On 7.4.9 security update on RHEL 6 (Moderate) (RHSA-2021:3527)	Nessus	Red Hat Local Security Checks	high
165123	RHEL 7 : Red Hat Single Sign-On 7.4.9 security update on RHEL 7 (Moderate) (RHSA-2021:3528)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2021-3513

high

Tenable Plugins

high

high

high

high

high