(Pwn2Own) Canon imageCLASS MF656Cdw listObjects2 Buffer Overflow Remote Code Execution Vulnerability

January 31st, 2025
ZDI-25-073 ZDI-CAN-25490

CVE ID

CVE-2024-12647

CVSS Score

8.8 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Canon

Affected Products

imageCLASS MF656Cdw

Vulnerability Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Canon imageCLASS MF656Cdw printers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the CADM service. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length buffer. An attacker can leverage this vulnerability to execute code in the context of the device.

Additional Details

Canon has issued an update to correct this vulnerability. More details can be found at:
https://www.canon-europe.com/support/product-security/#news

Disclosure Timeline

  • 2025-01-31 - Vulnerability reported to vendor
  • 2025-01-31 - Coordinated public release of advisory
  • 2025-01-31 - Advisory Updated

Credit

@quangnh89

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