CVE-2023-0858 : Security Advisory and Response

This CVE-2023-0858 from Canon involves an improper authentication vulnerability affecting Office/Small Office Multifunction Printers and Laser Printers, potentially enabling an unauthorized network attacker to gain access to the product.

Understanding CVE-2023-0858

This section dives into the details surrounding CVE-2023-0858, shedding light on the vulnerability and its impact.

What is CVE-2023-0858?

CVE-2023-0858 involves improper authentication of RemoteUI in Canon's Office/Small Office Multifunction Printers and Laser Printers. This flaw may enable an attacker within the network segment to trigger unauthorized access to the affected products. Specifically, various series and firmware versions sold in different regions are susceptible to this vulnerability.

The Impact of CVE-2023-0858

The impact of this vulnerability lies in the potential for unauthorized network-based attackers to exploit the flaw and gain access to the impacted Canon printers. As a result, sensitive information or system control may be compromised, posing a risk to the confidentiality of data.

Technical Details of CVE-2023-0858

Delving deeper into the technical aspects of CVE-2023-0858 to understand the nature of the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability stems from improper authentication of RemoteUI in Canon's Office/Small Office Multifunction Printers and Laser Printers, allowing network attackers to trigger unauthorized access to the products.

Affected Systems and Versions

Various Canon printer models and firmware versions are affected by CVE-2023-0858, including Satera LBP660C Series, Color imageCLASS LBP660C Series, X LBP1127C, i-SENSYS LBP660C Series, and more, with firmware versions Ver.11.04 and earlier sold in different regions.

Exploitation Mechanism

The exploitation of this vulnerability occurs through network-based attacks within the same segment, leveraging the improper authentication of RemoteUI to gain unauthorized access to the Canon printers.

Mitigation and Prevention

Exploring mitigation strategies and preventive measures to address CVE-2023-0858 and enhance the security posture of affected systems.

Immediate Steps to Take

Immediately update the firmware of the impacted Canon printers to secure them against unauthorized access and mitigate the risk posed by the vulnerability.

Long-Term Security Practices

Implement strong network security measures, such as access control policies and network segmentation, to prevent unauthorized access to critical devices like printers.

Patching and Updates

Regularly monitor security advisories from Canon and apply firmware updates promptly to address known vulnerabilities and enhance the security of Office/Small Office Multifunction Printers and Laser Printers.