(Pwn2Own) Canon imageCLASS MF743Cdw CADM setResource Heap-based Buffer Overflow Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Canon imageCLASS MF743Cdw printers. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the CADM service, which listens on TCP port 9013 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account.
Additional Details
Canon has issued an update to correct this vulnerability. More details can be found at:
https://www.usa.canon.com/support/canon-product-advisories/Service-Notice-Vulnerabilities-Remediation-Against-Buffer-Overflow
Disclosure Timeline
- 2022-12-28 - Vulnerability reported to vendor
- 2023-05-04 - Coordinated public release of advisory
Credit
Nguyen Cong Thanh - @ExLuck99 and Ha Anh Hoang - @hoangha2
