CVE-2019-10201 Explained : Impact and Mitigation

Keycloak's SAML broker up to version 6.0.1 is vulnerable to message signature verification bypass, allowing unauthorized access to sensitive data.

Understanding CVE-2019-10201

Keycloak's SAML broker up to version 6.0.1 is susceptible to a security flaw that enables attackers to manipulate SAML Responses.

What is CVE-2019-10201?

The vulnerability in Keycloak's SAML broker up to version 6.0.1 allows attackers to impersonate users and gain unauthorized access to sensitive information by bypassing message signature verification.

The Impact of CVE-2019-10201

CVSS Score: 8.1 (High Severity)
Attack Vector: Network
Confidentiality Impact: High
Integrity Impact: High
Privileges Required: Low
Attack Complexity: Low
Exploiting this vulnerability can lead to unauthorized access and data manipulation.

Technical Details of CVE-2019-10201

Keycloak's SAML broker vulnerability details and affected systems.

Vulnerability Description

The flaw in Keycloak's SAML broker up to version 6.0.1 allows attackers to modify SAML Responses without proper signature verification, leading to unauthorized access and data manipulation.

Affected Systems and Versions

Affected Product: Keycloak
Vendor: Red Hat
Affected Versions: Up to Keycloak 6.0.1

Exploitation Mechanism

Attackers can exploit this vulnerability by altering SAML Responses, removing <Signature> segments, and gaining unauthorized access to sensitive data.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-10201.

Immediate Steps to Take

Update Keycloak to a patched version that includes signature verification for SAML Responses.
Monitor and review SAML Responses for any unauthorized modifications.

Long-Term Security Practices

Implement strict message signature verification protocols.
Regularly audit and review SAML configurations for security gaps.

Patching and Updates

Apply security patches provided by Red Hat for Keycloak to address this vulnerability.