CVE-2021-24388 : Security Advisory and Response

A Stored Cross-Site Scripting (XSS) and Cross-Site Request Forgery (CSRF) vulnerability in the VikRentCar Car Rental Management System WordPress plugin before version 1.1.7 allows attackers to execute malicious scripts and manipulate settings.

Understanding CVE-2021-24388

This CVE involves a custom field option in the VikRentCar Car Rental Management System plugin that lacks proper sanitization, enabling stored XSS attacks. Additionally, the absence of CSRF checks permits attackers to tamper with settings.

What is CVE-2021-24388?

In the VikRentCar Car Rental Management System plugin version 1.1.7 and prior, unescaped field names expose a stored XSS flaw, while the absence of CSRF validation allows unauthorized setting modifications.

The Impact of CVE-2021-24388

This vulnerability could lead to unauthorized script execution and manipulation of system settings by attackers, potentially compromising user data and system integrity.

Technical Details of CVE-2021-24388

The following details highlight the vulnerability specifics:

Vulnerability Description

The lack of proper field name sanitization before outputting in the page enables stored XSS attacks, while the absence of CSRF checks permits unauthorized setting manipulations.

Affected Systems and Versions

The VikRentCar Car Rental Management System plugin versions prior to 1.1.7 are affected by this vulnerability.

Exploitation Mechanism

Attackers can exploit this issue by injecting malicious script payloads in the custom fields due to the lack of proper sanitization and CSRF checks.

Mitigation and Prevention

To address CVE-2021-24388 and enhance system security, consider the following measures:

Immediate Steps to Take

Update VikRentCar plugin to version 1.1.7 or higher to mitigate the vulnerability.
Regularly monitor and review custom fields and settings within the plugin for any unauthorized changes.

Long-Term Security Practices

Implement input sanitization and output encoding to prevent XSS attacks.
Enforce proper CSRF protection mechanisms to validate and authenticate user actions.

Patching and Updates

Stay informed about security updates and patches released by E4J s.r.l. for the VikRentCar plugin. Ensure timely application of patches to address known vulnerabilities.