CVE-2021-35298 : Security Advisory and Response

A Cross Site Scripting (XSS) vulnerability in Zammad 1.0.x up to 4.0.0 enables remote attackers to execute arbitrary web scripts or HTML by utilizing the 'note' field in multiple models.

Understanding CVE-2021-35298

This CVE record highlights a critical XSS issue in Zammad software versions 1.0.x to 4.0.0, allowing malicious actors to run unauthorized scripts on target systems.

What is CVE-2021-35298?

CVE-2021-35298 refers to a Cross Site Scripting (XSS) weakness in Zammad versions 1.0.x to 4.0.0 that enables cybercriminals to inject and execute malicious scripts or HTML content via the 'note' field within various models.

The Impact of CVE-2021-35298

This vulnerability poses a significant risk as attackers can exploit it to execute arbitrary scripts on affected systems, potentially leading to unauthorized access, data theft, and other security breaches.

Technical Details of CVE-2021-35298

The XSS flaw in Zammad 1.0.x up to 4.0.0 allows threat actors to execute malicious web scripts or HTML code by tampering with the 'note' field among various models deployed in the software.

Vulnerability Description

The vulnerability arises due to improper input validation in Zammad, which fails to sanitize user-supplied data injected into the 'note' field, paving the way for XSS attacks.

Affected Systems and Versions

Zammad versions 1.0.x to 4.0.0 are affected by this XSS vulnerability, leaving systems running these versions at risk of exploitation by attackers.

Exploitation Mechanism

Attackers can exploit CVE-2021-35298 by injecting malicious scripts or HTML code into the 'note' field within different models in Zammad, tricking users into executing these scripts and compromising system integrity.

Mitigation and Prevention

To safeguard systems from CVE-2021-35298, immediate action is necessary to mitigate the risk of exploitation and protect against potential attacks.

Immediate Steps to Take

Organizations should update Zammad to the latest patched version to eliminate the XSS vulnerability and prevent unauthorized script execution on their systems.

Long-Term Security Practices

Implementing secure coding practices, conducting regular security assessments, and educating users on identifying and avoiding suspicious content can enhance overall system security.

Patching and Updates

Regularly applying security patches and staying informed about software updates is crucial to addressing known vulnerabilities and ensuring the robustness of the Zammad platform.