CVE-2020-10776 Explained : Impact and Mitigation

A flaw in Keycloak before version 12.0.0 allows the addition of unsafe schemes for the redirect_uri parameter, enabling a Cross-site scripting attack.

Understanding CVE-2020-10776

This CVE identifies a vulnerability in Keycloak that could be exploited for Cross-site scripting attacks.

What is CVE-2020-10776?

CVE-2020-10776 is a security flaw in Keycloak versions prior to 12.0.0 that permits the inclusion of hazardous schemes in the redirect_uri parameter, facilitating Cross-site scripting attacks.

The Impact of CVE-2020-10776

The vulnerability allows attackers to execute malicious scripts in the context of a user's session, potentially leading to unauthorized actions or data theft.

Technical Details of CVE-2020-10776

Key technical aspects of the CVE.

Vulnerability Description

The flaw in Keycloak before version 12.0.0 enables the insertion of unsafe schemes in the redirect_uri parameter, opening the door to Cross-site scripting attacks.

Affected Systems and Versions

Product: Keycloak
Vendor: N/A
Versions Affected: Before version 12.0.0

Exploitation Mechanism

Attackers can exploit this vulnerability by manipulating the redirect_uri parameter to inject and execute malicious scripts within the application.

Mitigation and Prevention

Protective measures to address CVE-2020-10776.

Immediate Steps to Take

Upgrade Keycloak to version 12.0.0 or later to mitigate the vulnerability.
Implement input validation mechanisms to sanitize user inputs and prevent script injections.

Long-Term Security Practices

Regularly monitor and update security configurations to address emerging threats.
Conduct security audits and penetration testing to identify and remediate vulnerabilities.

Patching and Updates

Apply security patches and updates provided by Keycloak to ensure the ongoing protection of the system.