CVE-2020-10686 Explained : Impact and Mitigation

A flaw was found in Keycloak versions 8.0.2 and 9.0.0, allowing a malicious user to register as oneself and potentially remove MFA devices for other users.

Understanding CVE-2020-10686

This CVE pertains to a vulnerability in Keycloak versions 8.0.2 and 9.0.0 that could be exploited by a malicious user.

What is CVE-2020-10686?

The vulnerability in Keycloak versions 8.0.2 and 9.0.0 allows a malicious user to register as oneself and potentially remove MFA devices for other users.

The Impact of CVE-2020-10686

The impact of this vulnerability is rated as medium severity with a CVSS base score of 4.1.

Technical Details of CVE-2020-10686

This section provides technical details of the CVE.

Vulnerability Description

The flaw in Keycloak versions 8.0.2 and 9.0.0 enables a malicious user to register as oneself and manipulate credential IDs to potentially remove MFA devices of other users.

Affected Systems and Versions

Product: Keycloak
Vendor: Keycloak
Affected Versions: 8.0.2, 9.0.0

Exploitation Mechanism

Attack Complexity: High
Attack Vector: Network
Privileges Required: High
User Interaction: None
Scope: Unchanged
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: Low

Mitigation and Prevention

Protect your systems from CVE-2020-10686 with the following steps:

Immediate Steps to Take

Upgrade Keycloak to version 9.0.1 or later.
Monitor user registrations and device removal activities.

Long-Term Security Practices

Implement multi-factor authentication (MFA) for all users.
Regularly review and audit user accounts and device registrations.

Patching and Updates

Apply patches and updates provided by Keycloak to address this vulnerability.