Advisory Details

August 2nd, 2022

Lexmark MC3224i Firmware Downgrade Remote Code Execution Vulnerability

CVE ID	CVE-2022-24935
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 firmware upgrade feature. The issue results from the lack of authentication prior to allowing access to functionality. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root.
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-2022-24935.pdf
DISCLOSURE TIMELINE	2022-01-26 - Vulnerability reported to vendor 2022-08-02 - Coordinated public release of advisory
CREDIT	Christopher Anastasio @mufinnnnnnn and Justin Taft @JustTaft

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