CVE-2020-1714 : Exploit Details and Defense Strategies

A flaw in Keycloak before version 11.0.0 allows injection of serialized Java Objects, potentially leading to remote code execution.

Understanding CVE-2020-1714

This CVE impacts Red Hat's Keycloak authentication server.

What is CVE-2020-1714?

CVE-2020-1714 is a vulnerability in Keycloak before version 11.0.0 that allows attackers to inject serialized Java Objects, which could result in remote code execution.

The Impact of CVE-2020-1714

The vulnerability has a CVSS base score of 7.5 (High severity) and affects confidentiality, integrity, and availability, with a low level of privileges required for exploitation.

Technical Details of CVE-2020-1714

This section covers specific technical details of the CVE.

Vulnerability Description

Keycloak before version 11.0.0 contains usages of ObjectInputStream without type checks, enabling attackers to inject malicious Java Objects for potential remote code execution.

Affected Systems and Versions

Product: Keycloak
Vendor: Red Hat
Vulnerable Version: before 11.0.0

Exploitation Mechanism

The flaw allows attackers to inject arbitrarily serialized Java Objects, leading to the deserialization of malicious code in a privileged context.

Mitigation and Prevention

Protect systems from CVE-2020-1714 with the following measures:

Immediate Steps to Take

Update Keycloak to version 11.0.0 or newer to eliminate the vulnerability.
Employ network security measures to prevent unauthorized access to Keycloak instances.

Long-Term Security Practices

Implement strict input validation practices to mitigate future injection vulnerabilities.
Regularly monitor and audit Keycloak for any suspicious activities.

Patching and Updates

Stay informed about security updates from Red Hat for Keycloak to promptly apply patches and protect against known vulnerabilities.