CVE-2021-3827

 

Published at: - 23-08-2022 06:15

Last modified: - 27-08-2022 04:31

Total changes: - 2

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

 

Verification logic

 

Reference

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

 

Keywords

NVD

 

CVE-2021-3827

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures