Advisory Details

February 18th, 2022

Lexmark MC3224i PostScript Out-Of-Bounds Write Remote Code Execution Vulnerability

CVE ID	CVE-2021-44738
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 parsing of PostScript data. Crafted PostScript data can trigger a write past the end of an allocated buffer. 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://publications.lexmark.com/publications/security-alerts/CVE-2021-44738.pdf
DISCLOSURE TIMELINE	2022-01-28 - Vulnerability reported to vendor 2022-02-18 - Coordinated public release of advisory
CREDIT	Christopher Anastasio @mufinnnnnnn and Justin Taft @JustTaft

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