(Pwn2Own) Lexmark CX331adwe Missing Authentication Remote Code Execution Vulnerability

January 31st, 2024
ZDI-24-084 ZDI-CAN-22520

CVE ID

CVE-2023-50737

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

CX331adwe

Vulnerability Details

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Lexmark CX331adwe printers. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the implementation of authentication within the web interface. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this vulnerability to execute code in the context of root.

Additional Details

Lexmark has issued an update to correct this vulnerability. More details can be found at:
https://www.lexmark.com/en_us/solutions/security/lexmark-security-advisories.html

Disclosure Timeline

  • 2023-11-09 - Vulnerability reported to vendor
  • 2024-01-31 - Coordinated public release of advisory
  • 2024-07-01 - Advisory Updated

Credit

Sina Kheirkhah (@SinSinology) of Summoning Team (@SummoningTeam)

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