// For flags

CVE-2021-3461

keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A flaw was found in keycloak where keycloak may fail to logout user session if the logout request comes from external SAML identity provider and Principal Type is set to Attribute [Name].

Se ha encontrado un fallo en keycloak por el que keycloak puede fallar al cerrar la sesión del usuario si la petición de cierre de sesión proviene de un proveedor de identidad SAML externo y el tipo de principal está configurado como atributo [nombre]

Red Hat Single Sign-On 7.4 is a standalone server, based on the Keycloak project, that provides authentication and standards-based single sign-on capabilities for web and mobile applications. This release of Red Hat Single Sign-On 7.4.7 serves as a replacement for Red Hat Single Sign-On 7.4.6, and includes bug fixes and enhancements, which are documented in the Release Notes document linked to in the References. Issues addressed include an information leakage vulnerability.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Attack Vector
Local
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-03-23 CVE Reserved
  • 2021-05-20 CVE Published
  • 2024-08-03 CVE Updated
  • 2025-03-30 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-613: Insufficient Session Expiration
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Redhat
Search vendor "Redhat"
 Keycloak
Search vendor "Redhat" for product "Keycloak"
 9.0.13
Search vendor "Redhat" for product "Keycloak" and version "9.0.13"
-
Affected
Redhat
Search vendor "Redhat"
 Single Sign-on
Search vendor "Redhat" for product "Single Sign-on"
 7.0
Search vendor "Redhat" for product "Single Sign-on" and version "7.0"
-
Affected
Redhat
Search vendor "Redhat"
 Single Sign-on
Search vendor "Redhat" for product "Single Sign-on"
 7.4
Search vendor "Redhat" for product "Single Sign-on" and version "7.4"
-
Affected
Redhat
Search vendor "Redhat"
 Single Sign-on
Search vendor "Redhat" for product "Single Sign-on"
 7.4.7
Search vendor "Redhat" for product "Single Sign-on" and version "7.4.7"
-
Affected