CVE-2021-28673 : Security Advisory and Response

This article provides an in-depth analysis of CVE-2021-28673, a vulnerability found in Xerox printers, allowing remote attackers to execute arbitrary commands through a weaponized clone file.

Understanding CVE-2021-28673

This section delves into the details of the identified security vulnerability and its implications.

What is CVE-2021-28673?

The CVE-2021-28673 vulnerability affects multiple models of Xerox printers, including Phaser, WorkCentre, VersaLink, and others. Attackers can exploit this flaw to run arbitrary commands through the Web User Interface.

The Impact of CVE-2021-28673

The ability for remote attackers to execute arbitrary commands poses a significant threat to the security and integrity of Xerox printers, potentially leading to unauthorized access and control.

Technical Details of CVE-2021-28673

This section focuses on the technical aspects of the vulnerability, including how it can be exploited and which systems are affected.

Vulnerability Description

Xerox printers running specific firmware versions are vulnerable to remote code execution via a weaponized clone file, providing attackers with unauthorized access to the device's Web User Interface.

Affected Systems and Versions

Xerox Phaser 6510, WorkCentre 6515, VersaLink B400, B405, B600/B610, B605/B615, B7025/30/35, C400, C405, C500/C600, C505/C605, C7000, C7020/25/30, and C8000/C9000 printers are susceptible to CVE-2021-28673 before specific firmware updates.

Exploitation Mechanism

Remote attackers can exploit this vulnerability by leveraging a weaponized clone file to execute arbitrary commands through the printer's Web User Interface.

Mitigation and Prevention

In this final section, we explore the steps to mitigate the risk posed by CVE-2021-28673 and prevent potential exploitation.

Immediate Steps to Take

Users and administrators are advised to update their Xerox printer firmware to the latest secure versions provided by the vendor. Additionally, limiting network access to the printer can help reduce the attack surface.

Long-Term Security Practices

Regular security assessments, network segmentation, and employee training on cybersecurity best practices can enhance the overall security posture of the organization's printer infrastructure.

Patching and Updates

Stay informed about security advisories from Xerox and promptly apply recommended patches and updates to ensure ongoing protection against known vulnerabilities.