(Pwn2Own) Lexmark MC3224i snmpUTIL Improper Input Validation Remote Code Execution Vulnerability

May 17th, 2023
ZDI-23-669 ZDI-CAN-19731

CVE ID

CVE-2023-26069

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 snmpUTIL binary. The issue results from the lack of proper validation of configuration files. An attacker can leverage this vulnerability to execute code in the context of the admin user.

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-2023-26069.pdf

Disclosure Timeline

  • 2023-01-24 - Vulnerability reported to vendor
  • 2023-05-17 - Coordinated public release of advisory

Credit

Synacktiv

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