Vulmon Recent Vulnerabilities Research Posts Trends Blog About Contact
NA

CVE-2021-3827

Published: 23/08/2022 Updated: 30/11/2022
CVSS v3 Base Score: 6.8 | Impact Score: 5.2 | Exploitability Score: 1.6
VMScore: 0
Subscribe to Redhat

Vulnerability Summary

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.

Vulnerability Trend

Vulnerable Product Search on Vulmon Subscribe to Product

redhat single sign-on 7.0

redhat keycloak

redhat single_sign-on 7.5.0

redhat openshift_container_platform 4.8

redhat openshift_container_platform 4.9

Vendor Advisories

Red Hat: CVE-2021-3827
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 confidenti ...
Arch Linux Issues:
A security issue was found in keycloak version 15 where because of the default ECP binding flow, any other authentication flow can be bypassed By exploiting this behavior, an attacker would be able to bypass the MFA authentication by sending a SOAP request with AuthnRequest and Authorization header with the user credentials ...

References

CWE-287https://github.com/keycloak/keycloak/commit/44000caaf5051d7f218d1ad79573bd3d175cad0dhttps://bugzilla.redhat.com/show_bug.cgi?id=2007512https://access.redhat.com/security/cve/CVE-2021-3827https://github.com/keycloak/keycloak/security/advisories/GHSA-4pc7-vqv5-5r3vhttps://nvd.nist.govhttps://access.redhat.com/security/cve/cve-2021-3827
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2024-4367CVE-2024-35977CVE-2023-49335man-in-the-middleCVE-2024-4947CVE-2024-31714memory leakSQLCVE-2024-35994
Vulnerability Notification Service
You don’t have to wait for vulnerability scanning results
Get Started

Vulmon Search

Vulmon Search is a vulnerability search engine. It gives comprehensive vulnerability information through a very simple user interface.

About

Home Recent Vulnerabilities Research Posts Trends Blog About Contact

Products

Vulmon Search Vulmon Research Vulmon Alerts Vulmap

Connect

Twitter Reddit Linkedin Facebook