CVE-2021-3827

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Summary

CVECVE-2021-3827
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-08-23 16:15:00 UTC
Updated2022-11-30 18:46:00 UTC
DescriptionA flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user's credentials. The highest threat from this vulnerability is to confidentiality and integrity.

Risk And Classification

Problem Types: CWE-287

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Redhat Enterprise Linux 7.0 All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Operating System Redhat Enterprise Linux 8.0 All All All
Application Redhat Keycloak All All All All
Application Redhat Openshift Container Platform 4.8 All All All
Application Redhat Openshift Container Platform 4.9 All All All
Application Redhat Single Sign-on 7.0 All All All
Application Redhat Single Sign-on 7.5.0 All All All

References

ReferenceSourceLinkTags
KEYCLOAK-19177 Disable ECP flow by default for all Saml clients; ecp … · keycloak/keycloak@44000ca · GitHub MISC github.com
Red Hat Customer Portal - Access to 24x7 support and knowledge MISC access.redhat.com
ECP SAML binding bypasses authentication flows · Advisory · keycloak/keycloak · GitHub MISC github.com
2007512 – (CVE-2021-3827) CVE-2021-3827 keycloak-server-spi-private: ECP SAML binding bypasses authentication flows MISC bugzilla.redhat.com
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NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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