Loading HuntDB...
Hunt
Vulnerability Intelligence by wss.sh
Home Daily Briefings High Impact CVEs Recent Exploits KEV Catalog GitHub Advisories Latest Updates Security News
Sign In Sign Up

CVE-2021-3827

UNKNOWN
Published 2022-08-23T15:52:50
Actions:

Expert Analysis

Professional remediation guidance

Get tailored security recommendations from our analyst team for CVE-2021-3827. We'll provide specific mitigation strategies based on your environment and risk profile.

No CVSS data available

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.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

✓ GitHub Reviewed HIGH

ECP SAML binding bypasses authentication flows

GHSA-4pc7-vqv5-5r3v

Advisory Details

### 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.

Affected Packages

Maven org.keycloak:keycloak-saml-core
ECOSYSTEM: ≥0 <18.0.0

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

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

Advisory provided by GitHub Security Advisory Database. Published: April 27, 2022, Modified: December 1, 2022

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
Published: 2022-08-23T15:52:50
Last Modified: 2024-08-03T17:09:09.546Z
Copied to clipboard!