CVE-2021-33990 : What You Need to Know

A detailed overview of CVE-2021-33990, including its description, impact, technical details, and mitigation strategies.

Understanding CVE-2021-33990

This section covers the critical aspects of the CVE-2021-33990 vulnerability in Liferay Portal 6.2.5.

What is CVE-2021-33990?

The CVE-2021-33990 vulnerability in Liferay Portal 6.2.5 allows for specific unauthorized requests, potentially leading to security risks.

The Impact of CVE-2021-33990

The exploit could enable unauthorized users to perform file upload operations in certain scenarios, raising concerns regarding data integrity.

Technical Details of CVE-2021-33990

Explore the technical specifics of CVE-2021-33990 to understand its nature and implications.

Vulnerability Description

Liferay Portal 6.2.5 is susceptible to Command=FileUpload&Type=File&CurrentFolder=/ requests when frmfolders.html is present, although the vendor has disputed the severity of this issue.

Affected Systems and Versions

The affected systems include Liferay Portal 6.2.5 instances where the specified condition exists, potentially exposing them to exploitation.

Exploitation Mechanism

The vulnerability arises from the accessibility of frmfolders.html, which could allow unauthorized users to upload files, creating security loopholes.

Mitigation and Prevention

Discover essential steps to mitigate the risks associated with CVE-2021-33990 and safeguard vulnerable systems.

Immediate Steps to Take

Users are advised to closely monitor and restrict access to sensitive areas, limiting the possibility of unauthorized file uploads.

Long-Term Security Practices

Implement robust access control measures and conduct regular security audits to identify and address potential vulnerabilities proactively.

Patching and Updates

Apply vendor-recommended patches or security updates to address the CVE-2021-33990 vulnerability effectively.