CVE-2021-33323 : Security Advisory and Response

The Dynamic Data Mapping module in Liferay Portal 7.1.0 through 7.3.2, and Liferay DXP 7.1 before fix pack 19, and 7.2 before fix pack 7, autosaves form values for unauthenticated users. This vulnerability allows remote attackers to view the autosaved values by accessing the form as an unauthenticated user.

Understanding CVE-2021-33323

This section provides insights into the impact, technical details, and mitigation strategies related to CVE-2021-33323.

What is CVE-2021-33323?

CVE-2021-33323 pertains to a security flaw in the Dynamic Data Mapping module of Liferay Portal versions 7.1.0 to 7.3.2 and Liferay DXP versions 7.1 and 7.2. The vulnerability enables unauthorized access to form data that has been autosaved for unauthenticated users.

The Impact of CVE-2021-33323

The impact of this vulnerability is significant as it allows remote attackers to retrieve sensitive information by exploiting the autosave feature in forms intended for unauthenticated users. This could lead to data breaches and privacy violations.

Technical Details of CVE-2021-33323

Let's delve into the specifics of the vulnerability.

Vulnerability Description

The flaw in the Dynamic Data Mapping module results in the autosaving of form values for unauthenticated users. When attackers access the form as unauthenticated users, they can view the autosaved data, compromising confidentiality.

Affected Systems and Versions

Liferay Portal versions 7.1.0 through 7.3.2, along with Liferay DXP 7.1 and 7.2 before the respective fix packs, are affected by this vulnerability.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by posing as unauthenticated users and accessing forms that have autosaved data. Through this method, attackers gain unauthorized access to sensitive information.

Mitigation and Prevention

To address CVE-2021-33323, it is essential to implement immediate steps and adopt long-term security practices.

Immediate Steps to Take

Organizations should disable the autosave feature for unauthenticated users and enforce authentication mechanisms to prevent unauthorized access to form data. Additionally, monitoring for suspicious activities is crucial.

Long-Term Security Practices

In the long term, organizations should conduct regular security audits, train employees on best security practices, and keep systems up to date with the latest security patches.

Patching and Updates

Users are advised to apply the recommended patches provided by Liferay for Portal versions 7.1.0 to 7.3.2 and DXP versions 7.1 and 7.2 to mitigate the vulnerability.