CVE-2024-12649 in Satera MF656Cdw
Summary
by MITRE • 01/28/2025
Buffer overflow in XPS data font processing of Small Office Multifunction Printers and Laser Printers(*) which may allow an attacker on the network segment to trigger the affected product being unresponsive or to execute arbitrary code. *: Satera MF656Cdw/Satera MF654Cdw firmware v05.04 and earlier sold in Japan. Color imageCLASS MF656Cdw/Color imageCLASS MF654Cdw/Color imageCLASS MF653Cdw/Color imageCLASS MF652Cdw/Color imageCLASS LBP633Cdw/Color imageCLASS LBP632Cdw firmware v05.04 and earlier sold in US. i-SENSYS MF657Cdw/i-SENSYS MF655Cdw/i-SENSYS MF651Cdw/i-SENSYS LBP633Cdw/i-SENSYS LBP631Cdw firmware v05.04 and earlier sold in Europe.
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Analysis
by VulDB Data Team • 01/26/2026
The vulnerability CVE-2024-12649 represents a critical buffer overflow flaw within the XPS data font processing functionality of several multifunction printer models from Canon. This issue affects specific firmware versions across different regional markets including Japan, United States, and Europe, with affected devices including the Satera MF656Cdw, Color imageCLASS MF656Cdw, i-SENSYS MF657Cdw, and various other models in their v05.04 and earlier firmware releases. The vulnerability stems from inadequate input validation during the processing of XPS (XML Paper Specification) font data which is commonly used for print job formatting and document rendering in networked printing environments. This flaw manifests when the printer receives specially crafted XPS data containing malformed font information that exceeds allocated buffer boundaries during processing.
The technical exploitation of this buffer overflow vulnerability occurs through network-based attacks targeting the affected printer models, as the vulnerability exists in the printer's network processing capabilities rather than requiring physical access. When an attacker sends malicious XPS data containing oversized font parameters, the printer's memory management fails to properly handle the excessive data, causing the buffer to overflow and potentially corrupt adjacent memory locations. This memory corruption can lead to two primary attack vectors: denial of service where the printer becomes unresponsive and ceases to function properly, or more critically, arbitrary code execution that allows remote attackers to gain control over the affected device. The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a classic example of how insufficient input validation can create remote execution opportunities in embedded networked devices.
From an operational perspective, the impact of this vulnerability extends beyond simple device disruption to potentially enable full compromise of the affected printing infrastructure. Networked printers often serve as critical components in office environments and can provide attackers with persistent access points for further lateral movement within corporate networks. The affected printers may be used to establish command and control channels or serve as stepping stones for accessing other networked systems. The vulnerability's network accessibility means that attackers within the same network segment can exploit it without requiring specialized equipment or physical access to the devices. This presents a significant risk to organizations that rely on these printers for document management and printing services, as the compromised devices could potentially be used to intercept sensitive print jobs or serve as entry points for broader network infiltration activities.
Organizations should implement immediate mitigations including firmware updates from Canon to address the buffer overflow vulnerability in affected printer models. The remediation strategy must involve comprehensive firmware upgrades across all impacted devices within the network infrastructure, ensuring that all regional variants receive appropriate patches. Network segmentation and access controls should be implemented to limit direct network access to these devices, particularly restricting access from untrusted network segments. Additionally, monitoring systems should be deployed to detect anomalous XPS data processing patterns that might indicate exploitation attempts. The vulnerability demonstrates the importance of secure coding practices in embedded systems and highlights how even seemingly benign functionality like font processing can become a critical security weakness when proper input validation and memory management are not implemented. This case study reinforces the necessity for regular security assessments of networked devices and the implementation of robust patch management processes to maintain security posture against emerging threats in the printing and imaging industry.