CVE-2021-3318 : Security Advisory and Response

DzzOffice through 2.02.1 is vulnerable to a cross-site scripting (XSS) attack via the editorid parameter in attach/ajax.php. This vulnerability allows malicious actors to execute scripts in the context of a user's browser, potentially leading to unauthorized actions.

Understanding CVE-2021-3318

This section will provide an overview of CVE-2021-3318, including its impact, technical details, and mitigation steps.

What is CVE-2021-3318?

CVE-2021-3318 is a security vulnerability found in DzzOffice through version 2.02.1 that allows for XSS attacks using the editorid parameter in attach/ajax.php.

The Impact of CVE-2021-3318

The impact of this CVE lies in the ability for threat actors to inject and execute malicious scripts within the browser of a user accessing the vulnerable application, potentially leading to data theft, unauthorized access, or other nefarious activities.

Technical Details of CVE-2021-3318

In this section, we will delve into the specifics of the vulnerability, including its description, affected systems, and exploitation mechanism.

Vulnerability Description

The vulnerability in attach/ajax.php in DzzOffice through 2.02.1 allows for XSS attacks by manipulating the editorid parameter, enabling attackers to inject and execute malicious scripts.

Affected Systems and Versions

All versions of DzzOffice up to and including 2.02.1 are affected by this security flaw.

Exploitation Mechanism

Malicious actors can exploit this vulnerability by crafting a specific payload to be passed through the editorid parameter in the attach/ajax.php endpoint, leading to the execution of unauthorized scripts.

Mitigation and Prevention

To safeguard your systems against CVE-2021-3318, it is crucial to take immediate action and implement long-term security practices.

Immediate Steps to Take

Users are advised to update DzzOffice to a non-vulnerable version and sanitize inputs to prevent XSS attacks.

Long-Term Security Practices

Ensure regular security audits, implement input validation mechanisms, and educate users on safe browsing habits to mitigate XSS risks.

Patching and Updates

Stay informed about security updates from DzzOffice and promptly apply patches to address known vulnerabilities.