CVE-2021-3461

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Last Modified: UTC

ModerateModerate ImpactWhat does this mean?

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Description

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].

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].

Additional information

  • Bugzilla 1941565: keycloak: Backchannel logout not working when Principal Type is set to Attribute Name for external SAML IDP
  • CWE-613: Insufficient Session Expiration
  • FAQ: Frequently asked questions about CVE-2021-3461

Common Vulnerability Scoring System (CVSS) Score Details

Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown
Red HatNVD

CVSS v3 Base Score

7.1

7.1

Attack Vector

Local

Local

Attack Complexity

Low

Low

Privileges Required

None

None

User Interaction

Required

Required

Scope

Unchanged

Unchanged

Confidentiality Impact

High

High

Integrity Impact

High

High

Availability Impact

None

None

CVSS v3 Vector

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

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

Understanding the Weakness (CWE)

CWE-613

Access Control

Technical Impact: Bypass Protection Mechanism

Acknowledgements

Red Hat would like to thank Peter Mazán (peter.mazan@tatramed.sk) (TatraMed Software) for reporting this issue.

Frequently Asked Questions

Why is Red Hat's CVSS v3 score or Impact different from other vendors?

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I have a Red Hat product but it is not in the above list, is it affected?

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