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CVE-2021-3827

Published: Aug 23, 2022

Modified: Aug 3, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	keycloak	affected `Fixed in v18.0.0`

Weaknesses (CWE)

References

https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3v

x_refsource_MISC

https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0d

x_refsource_MISC

https://bugzilla.redhat.com/show_bug.cgi?id=2007512

x_refsource_MISC

https://access.redhat.com/security/cve/CVE-2021-3827

x_refsource_MISC

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