CVE-2021-20195 : What You Need to Know
Learn about CVE-2021-20195, a Keycloak vulnerability allowing Self Stored XSS leading to account takeover. Understand impact, affected versions, and mitigation steps.
A flaw was discovered in Keycloak versions prior to 13.0.0, leading to a Self Stored XSS vulnerability that could result in a complete account takeover. This CVE poses a significant risk to data confidentiality, integrity, and system availability.
Understanding CVE-2021-20195
This section provides insights into the impact and technical details of CVE-2021-20195.
What is CVE-2021-20195?
The vulnerability in Keycloak versions before 13.0.0 allows for a Self Stored XSS attack that could be exploited to execute malicious JavaScript, potentially leading to a complete account compromise.
The Impact of CVE-2021-20195
The primary risks associated with this vulnerability include compromised data confidentiality, integrity, and system availability, posing a severe security threat to affected systems.
Technical Details of CVE-2021-20195
Explore the specifics of the vulnerability to gain a comprehensive understanding.
Vulnerability Description
The flaw in Keycloak arises from user-supplied data fields not being adequately encoded, enabling the execution of JavaScript code, which may result in the takeover of user accounts.
Affected Systems and Versions
Keycloak versions earlier than 13.0.0 are affected by this vulnerability, making them susceptible to the Self Stored XSS attack vector.
Exploitation Mechanism
By exploiting the inadequate encoding of user-supplied data and executing malicious JavaScript code, threat actors can escalate the attack to achieve complete account control.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks posed by CVE-2021-20195.
Immediate Steps to Take
Users are advised to update Keycloak to version 13.0.0 or later to address the vulnerability and prevent the exploitation of the Self Stored XSS attack vector.
Long-Term Security Practices
Implementing secure coding practices, regular security audits, and user input validation can help enhance the overall security posture and prevent similar vulnerabilities in the future.
Patching and Updates
Stay informed about security patches and updates released by Keycloak to ensure systems are protected against known vulnerabilities and security threats.