CVE-2023-0852 : Vulnerability Insights and Analysis

This CVE-2023-0852 involves a buffer overflow vulnerability found in the Address Book of the Mobile Device function of Canon Office/Small Office Multifunction Printers and Laser Printers. This vulnerability could potentially allow an attacker within the network segment to make the affected product unresponsive or execute arbitrary code.

Understanding CVE-2023-0852

This section will delve into the details and impacts of CVE-2023-0852.

What is CVE-2023-0852?

The CVE-2023-0852 vulnerability is classified as a buffer overflow vulnerability, specifically a stack-based buffer overflow (CWE-121). This type of vulnerability occurs when a program writes more data to a block of memory, or buffer, than the buffer is allocated to hold, potentially leading to execution of arbitrary code.

The Impact of CVE-2023-0852

The impact of this critical vulnerability is significant, with a CVSS v3.1 base score of 9.8 out of 10, highlighting the severity of the issue. The exploit could allow an attacker to disrupt the functionality of the affected Canon printers or execute malicious code, compromising the confidentiality, integrity, and availability of the devices.

Technical Details of CVE-2023-0852

In this section, we will explore the technical aspects of CVE-2023-0852 vulnerability.

Vulnerability Description

The buffer overflow vulnerability exists in the Address Book of the Mobile Device function of specific Canon printers, potentially exploited by an attacker on the network segment to trigger unresponsiveness or execute arbitrary code.

Affected Systems and Versions

The vulnerability affects Canon Office/Small Office Multifunction Printers and Laser Printers with specific firmware versions, including Satera LBP660C Series, LBP620C Series, MF740C Series, MF640C Series, Color imageCLASS LBP660C Series, LBP 620C Series, X LBP1127C, MF740C Series, MF640C Series, X MF1127C, i-SENSYS LBP660C Series, LBP620C Series, MF740C Series, MF640C Series, C1127P, C1127iF, C1127i with firmware Ver.11.04 and earlier sold in Japan, US, and Europe.

Exploitation Mechanism

The exploit of this vulnerability requires network access to the affected Canon printers, enabling an attacker to send specially crafted data to the Address Book function, leading to a buffer overflow condition and potential code execution.

Mitigation and Prevention

Understanding how to mitigate and prevent the exploitation of CVE-2023-0852 is crucial for maintaining the security of Canon printers.

Immediate Steps to Take

Canon device users should apply security updates provided by Canon promptly to address the vulnerability.
Implement network security measures to restrict access to the affected printers and prevent unauthorized exploitation.

Long-Term Security Practices

Regularly update firmware and software on Canon printers to patch known vulnerabilities and enhance security.
Conduct security assessments and penetration testing to identify and address potential vulnerabilities proactively.

Patching and Updates

Stay informed about security advisories and updates released by Canon for the affected printer models to ensure that the devices are protected against known vulnerabilities, including CVE-2023-0852.