CVE-2021-28671 Explained : Impact and Mitigation

This article discusses CVE-2021-28671, a remote Command Execution vulnerability found in Xerox printers' Web User Interface. It covers the impact, technical details, and mitigation steps.

Understanding CVE-2021-28671

This section provides detailed information about the CVE-2021-28671 vulnerability affecting Xerox printers.

What is CVE-2021-28671?

CVE-2021-28671 is a remote Command Execution vulnerability in the Web User Interface of various Xerox printer models, allowing attackers to execute arbitrary commands.

The Impact of CVE-2021-28671

This vulnerability can be exploited by remote attackers with a weaponized clone file to execute unauthorized commands, posing a significant security risk to affected systems.

Technical Details of CVE-2021-28671

This section delves into the technical aspects of CVE-2021-28671, including the vulnerability description, affected systems, and exploitation mechanism.

Vulnerability Description

Xerox Phaser, WorkCentre, VersaLink, and other models are vulnerable to remote Command Execution due to a flaw in their Web User Interface, enabling attackers to run malicious commands.

Affected Systems and Versions

Xerox printer models such as Phaser 6510, WorkCentre 6515, VersaLink B400, B405, B600/B610, and others are susceptible to this vulnerability before specific versions.

Exploitation Mechanism

Remote attackers leveraging a weaponized clone file can exploit this vulnerability by interacting with the Web User Interface to execute unauthorized commands.

Mitigation and Prevention

In this section, we discuss the immediate steps to take and long-term security practices to mitigate the risks associated with CVE-2021-28671.

Immediate Steps to Take

Users are advised to update their Xerox printer firmware to the latest patched versions and restrict access to the Web User Interface to trusted entities.

Long-Term Security Practices

Implementing network segmentation, regular security audits, and employee cybersecurity training can enhance the overall security posture against similar vulnerabilities.

Patching and Updates

Xerox has released security patches for affected printer models. Regularly monitor official advisories and apply patches promptly to secure vulnerable devices.