CVE-2021-42092 : Vulnerability Insights and Analysis

An issue was discovered in Zammad before version 4.1.1 that may lead to stored XSS via an Article during the addition of an attachment to a Ticket.

Understanding CVE-2021-42092

This CVE identifies a vulnerability in Zammad software that could allow for stored cross-site scripting attacks.

What is CVE-2021-42092?

Stored XSS is a type of vulnerability where malicious scripts are injected into a website. In this case, it occurs when adding attachments to tickets in Zammad, potentially leading to unauthorized access or data theft.

The Impact of CVE-2021-42092

This vulnerability could be exploited by attackers to execute malicious scripts, steal sensitive information, or perform unauthorized actions within the affected system.

Technical Details of CVE-2021-42092

This section delves into the specific technical aspects of the vulnerability.

Vulnerability Description

The issue in Zammad before version 4.1.1 allows for stored cross-site scripting to occur during the attachment addition process to a Ticket.

Affected Systems and Versions

Product: Zammad
Vendor: N/A
Versions affected: All versions prior to 4.1.1

Exploitation Mechanism

The vulnerability is exploited by injecting malicious scripts into articles when adding attachments, enabling attackers to execute unauthorized scripts.

Mitigation and Prevention

Protective measures and actions to address the CVE.

Immediate Steps to Take

Update Zammad to version 4.1.1 or later to mitigate the vulnerability.
Regularly monitor for any unusual activities within the system.

Long-Term Security Practices

Implement input validation to prevent script injection.
Conduct security audits and penetration testing regularly to identify vulnerabilities.

Patching and Updates

Stay informed about security updates and patches released by Zammad. Apply updates promptly to ensure the system's security.