Advisory Details

May 17th, 2023

(Pwn2Own) Lexmark MC3224i putinterval Heap-based Buffer Overflow Remote Code Execution Vulnerability

ZDI-23-664
ZDI-CAN-19755

CVE ID CVE-2023-26064
CVSS SCORE 8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS Lexmark
AFFECTED PRODUCTS MC3224i
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Lexmark MC3224i printers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the putinterval method. 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 device.

ADDITIONAL DETAILS Lexmark has issued an update to correct this vulnerability. More details can be found at:
https://publications.lexmark.com/publications/security-alerts/CVE-2023-26064.pdf
DISCLOSURE TIMELINE
  • 2022-12-28 - Vulnerability reported to vendor
  • 2023-05-17 - Coordinated public release of advisory
CREDIT Christopher Anastasio (@mufinnnnnnn)
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