CVE-2021-33331 Explained : Impact and Mitigation
Learn about CVE-2021-33331, an open redirect vulnerability impacting Liferay Portal and Liferay DXP versions 7.0.0 to 7.3.1. Understand its impact, affected systems, exploitation, and mitigation measures.
A detailed overview of CVE-2021-33331, an Open redirect vulnerability in Liferay Portal and Liferay DXP.
Understanding CVE-2021-33331
This section will cover what CVE-2021-33331 is and the impact it may have.
What is CVE-2021-33331?
CVE-2021-33331 is an open redirect vulnerability found in the Notifications module of Liferay Portal versions 7.0.0 through 7.3.1, and Liferay DXP 7.0 before fix pack 94, 7.1 before fix pack 19, and 7.2 before fix pack 8. This vulnerability allows remote attackers to redirect users to arbitrary external URLs by exploiting the 'redirect' parameter.
The Impact of CVE-2021-33331
The vulnerability poses a risk of unauthorized redirection of users to malicious websites, potentially leading to phishing attacks or the installation of malware on users' devices.
Technical Details of CVE-2021-33331
In this section, we will delve into the technical specifics of the CVE.
Vulnerability Description
The vulnerability stems from insufficient input validation in the Notifications module, enabling attackers to manipulate the 'redirect' parameter.
Affected Systems and Versions
Liferay Portal versions 7.0.0 through 7.3.1, and Liferay DXP 7.0 before fix pack 94, 7.1 before fix pack 19, and 7.2 before fix pack 8 are known to be affected.
Exploitation Mechanism
Cybercriminals can exploit this vulnerability by crafting malicious URLs containing the 'redirect' parameter, tricking users into accessing harmful external sites.
Mitigation and Prevention
This section focuses on steps to mitigate the risks associated with CVE-2021-33331.
Immediate Steps to Take
Users and administrators are advised to update their Liferay Portal and Liferay DXP installations to the latest available versions that contain security patches addressing the open redirect vulnerability.
Long-Term Security Practices
Implement ongoing security awareness training for users and prioritize the regular monitoring and updating of software to prevent similar vulnerabilities.
Patching and Updates
Regularly check for security updates from Liferay and apply patches promptly to ensure the security of your systems and prevent exploitation of known vulnerabilities.