CVE-2021-28672 : Vulnerability Insights and Analysis

Xerox Phaser 6510, WorkCentre 6515, VersaLink B400, B405, and other models before specific versions are prone to a buffer overflow vulnerability, allowing remote attackers to execute arbitrary code through a web page parameter handling issue.

Understanding CVE-2021-28672

This CVE identifies a critical vulnerability in various Xerox printer models that could result in remote code execution.

What is CVE-2021-28672?

CVE-2021-28672 is a buffer overflow vulnerability in multiple Xerox printer models. It arises due to improper handling of web page parameters, enabling attackers to launch arbitrary code execution attacks.

The Impact of CVE-2021-28672

This vulnerability could be exploited by remote attackers to execute malicious code on affected Xerox printers, potentially leading to unauthorized access, data breaches, or system compromise.

Technical Details of CVE-2021-28672

The following technical aspects are associated with CVE-2021-28672:

Vulnerability Description

Xerox Phaser 6510, WorkCentre 6515, VersaLink B400, B405, and other models before specified firmware versions are susceptible to a buffer overflow when handling web page parameters.

Affected Systems and Versions

Impacted Xerox models include Phaser 6510, WorkCentre 6515, VersaLink B400, B405, B600/B610, B605/B615, B7025/30/35, C400, C405, C500/C600, C505/C605, C7000, C7020/25/30, C8000/C9000, and C8000W printers. Affected firmware versions are listed in the CVE description.

Exploitation Mechanism

Attackers can exploit this vulnerability by sending malicious web page parameters to the affected Xerox printers, triggering a buffer overflow and gaining the ability to execute arbitrary code remotely.

Mitigation and Prevention

To mitigate the risks associated with CVE-2021-28672, consider the following steps:

Immediate Steps to Take

Update Xerox printer firmware to the recommended versions that address the buffer overflow vulnerability.
Implement network segmentation to limit access to vulnerable printers.
Monitor network traffic for any suspicious activity targeting Xerox printer models.

Long-Term Security Practices

Regularly check for firmware updates and security patches released by Xerox.
Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Provide security awareness training to users to recognize and report any unusual printer behavior.

Patching and Updates

Xerox has released firmware updates for the affected printer models. Ensure timely installation of the patches to eliminate the buffer overflow vulnerability and enhance the security posture of the devices.