CVE-2023-4957 : Vulnerability Insights and Analysis

This CVE details an authentication bypass vulnerability discovered on a Zebra Technologies ZTC ZT410-203dpi ZPL printer, allowing an attacker in the same network to change the username and password for the Web Page by sending a crafted POST request. The vulnerability is exploitable when the printer's protected mode is disabled.

Understanding CVE-2023-4957

This section will provide an insight into the nature of the CVE-2023-4957 vulnerability.

What is CVE-2023-4957?

The CVE-2023-4957 vulnerability involves an authentication bypass on a Zebra Technologies ZTC ZT410 printer, enabling a malicious actor within the same network to alter the printer's username and password through a specially crafted POST request. Exploitation requires the printer's protected mode to be turned off.

The Impact of CVE-2023-4957

The impact of this vulnerability is significant as it allows unauthorized individuals on the same network to manipulate the printer's login credentials, potentially leading to unauthorized access and misuse of the device.

Technical Details of CVE-2023-4957

Delve into the specific technical aspects of CVE-2023-4957 to better understand its implications and scope.

Vulnerability Description

The vulnerability stems from an authentication bypass that permits unauthorized users to modify the printer's login credentials through a specific POST request, provided the protected mode is disabled.

Affected Systems and Versions

The CVE-2023-4957 vulnerability affects the Zebra Technologies ZTC ZT410 printer running the 203dpi ZPL version 18J150703184.

Exploitation Mechanism

By sending a carefully crafted POST request to the setvarsResults.cgi file, an attacker within the same network can exploit the authentication bypass vulnerability to change the username and password of the Zebra ZT410 printer.

Mitigation and Prevention

Explore the measures to mitigate the risks associated with CVE-2023-4957 and prevent potential exploitation by threat actors.

Immediate Steps to Take

To address the vulnerability, it is recommended to activate the protected mode on Zebra Printers running Link-OS v6.0 and later. This mode safeguards the printer from unauthorized changes by locking the current configuration until authorized updates are made.

Long-Term Security Practices

Establishing robust network security protocols and implementing regular security audits can help prevent unauthorized access and enhance overall cybersecurity posture.

Patching and Updates

It's crucial to stay informed about security updates and patches provided by Zebra Technologies. Additionally, adhering to best security practices, including enabling "Protected Mode," can fortify the defense against similar vulnerabilities.