Advisory Details

January 31st, 2024

(Pwn2Own) Lexmark CX331adwe PostScript File Parsing Memory Corruption Remote Code Execution Vulnerability

ZDI-24-083
ZDI-CAN-22445

CVE ID CVE-2023-50736
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 parsing of PostScript data. The issue results from the lack of proper validation of user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to execute code in the context of the pagemaker user.

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 Chris Anastasio @mufinnnnnnn
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