CVE-2017-12161 Explained : Impact and Mitigation

Keycloak before 3.4.2.Final allows unauthorized manipulation of a URL in a password reset request, potentially leading to sensitive information disclosure.

Understanding CVE-2017-12161

A vulnerability in Keycloak versions prior to 3.4.2.Final could be exploited by attackers to manipulate a password reset request URL.

What is CVE-2017-12161?

The CVE-2017-12161 vulnerability in Keycloak allows unauthorized modification of a URL in a password reset request, enabling attackers to create malicious requests and obtain valid reset tokens.

The Impact of CVE-2017-12161

Exploiting this vulnerability could result in the disclosure of sensitive information or facilitate further malicious activities.

Technical Details of CVE-2017-12161

Keycloak vulnerability details and affected systems.

Vulnerability Description

Unauthorized URL manipulation in password reset requests
Exploitation via client-side /etc/hosts entry
Potential acquisition of valid reset tokens

Affected Systems and Versions

Product: Keycloak
Vendor: Red Hat, Inc.
Versions Affected: Before 3.4.2.Final

Exploitation Mechanism

Attackers exploit client-side /etc/hosts entry to manipulate URL
Creation of malicious password reset requests

Mitigation and Prevention

Steps to mitigate and prevent CVE-2017-12161 exploitation.

Immediate Steps to Take

Update Keycloak to version 3.4.2.Final or newer
Monitor password reset requests for suspicious activities

Long-Term Security Practices

Regularly review and update access control policies
Conduct security training to raise awareness of URL manipulation risks

Patching and Updates

Apply patches and updates promptly to address known vulnerabilities