CVE-2021-42220 : What You Need to Know

A Cross-Site Scripting (XSS) vulnerability in Dolibarr before 14.0.3 allows exploitation through the ticket creation flow, requiring an admin to paste a malicious payload into a form.

Understanding CVE-2021-42220

This CVE discloses a specific XSS vulnerability in the Dolibarr software.

What is CVE-2021-42220?

The vulnerability lies in Dolibarr versions earlier than 14.0.3, where an admin can introduce a harmful script during ticket creation, leading to potential exploitation.

The Impact of CVE-2021-42220

The vulnerability permits attackers to inject and execute malicious scripts into Dolibarr systems, potentially compromising user data and system integrity.

Technical Details of CVE-2021-42220

This section delves into the technical specifics of the CVE.

Vulnerability Description

The flaw allows for Cross-Site Scripting (XSS) attacks through the ticket creation process in Dolibarr versions preceding 14.0.3

Affected Systems and Versions

Affected: Dolibarr versions before 14.0.3
Unaffected: Dolibarr 14.0.3 and above

Exploitation Mechanism

An administrator inserts malicious script into a form during ticket creation

Mitigation and Prevention

Implement security measures to mitigate the risks associated with CVE-2021-42220.

Immediate Steps to Take

Upgrade Dolibarr software to version 14.0.3 or newer
Avoid pasting untrusted code into input fields
Educate users on the risks of XSS attacks

Long-Term Security Practices

Conduct regular security audits and penetration testing
Stay informed about security updates and best practices

Patching and Updates

Monitor Dolibarr's official announcements for security patches and updates