CVE-2018-14637 : Vulnerability Insights and Analysis

Keycloak version 4.6.0.Final and earlier have a vulnerability in their SAML broker consumer endpoint that allows for a replay attack.

Understanding CVE-2018-14637

Keycloak version 4.6.0.Final and earlier are affected by a vulnerability that disregards expiration conditions on SAML assertions, enabling attackers to carry out replay attacks.

What is CVE-2018-14637?

The vulnerability in the SAML broker consumer endpoint of Keycloak versions prior to 4.6.0.Final allows malicious actors to exploit the system by ignoring expiration conditions on SAML assertions, facilitating replay attacks.

The Impact of CVE-2018-14637

The vulnerability poses a medium severity risk with a CVSS base score of 6.1. Attackers can leverage this flaw to execute replay attacks, compromising the confidentiality and integrity of the affected systems.

Technical Details of CVE-2018-14637

Key technical aspects of the CVE-2018-14637 vulnerability.

Vulnerability Description

The SAML broker consumer endpoint in Keycloak versions before 4.6.0.Final fails to enforce expiration conditions on SAML assertions, opening the door for replay attacks.

Affected Systems and Versions

Product: Keycloak
Vendor: [UNKNOWN]
Versions Affected: 4.6.0.Final and earlier

Exploitation Mechanism

The vulnerability can be exploited by attackers to perform replay attacks due to the system's failure to validate expiration conditions on SAML assertions.

Mitigation and Prevention

Protective measures to address CVE-2018-14637.

Immediate Steps to Take

Upgrade Keycloak to version 4.6.0.Final or later to mitigate the vulnerability.
Monitor and restrict network access to the SAML broker consumer endpoint.

Long-Term Security Practices

Regularly update and patch Keycloak to ensure the latest security fixes are in place.
Implement network segmentation to limit the impact of potential attacks.

Patching and Updates

Apply security patches and updates provided by Keycloak to address the vulnerability effectively.