CVE-2021-3827

keycloak-server-spi-private: ECP SAML binding bypasses authentication flows

Published Aug 23, 2022 CVSS 3.1 · 6.8 Medium EPSS 1.2% KEV · Not listed
Description
A 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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-1622 A 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.
Github GHSA Github GHSA GHSA-4pc7-vqv5-5r3v ECP SAML binding bypasses authentication flows
History

No history.

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Aug 3, 2024, 5:09 PM
Reserved
Sep 24, 2021, 12:00 AM
Status
Modified
Published
Aug 23, 2022, 4:15 PM
Modified
Jun 17, 2026, 4:05 AM
Severity
Moderate
Public date
Sep 2, 2021, 12:00 AM