CVE-2021-3827

State: Published
Severity: Not scored
Published: Aug 23, 2022
Updated: Aug 3, 2024
Reserved: Sep 24, 2021

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.

Scores

The record has no CVSS score.

Weaknesses

CWE-287 Improper Authentication

Affected Products

Product	Versions
keycloakn/a	Fixed in v18.0.0Affected

References

https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v
https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d
https://bugzilla.redhat.com/show_bug.cgi?id=2007512
https://access.redhat.com/security/cve/CVE-2021-3827

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