Advisory Details

January 31st, 2025

(Pwn2Own) Canon imageCLASS MF656Cdw TIF File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-25-074
ZDI-CAN-25592

CVE ID CVE-2024-12648
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 parsing of TIF files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

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 Alain Rodel, Neodyme AG
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