ZDI-22-332: (Pwn2Own) Lexmark MC3224i Web Configuration File Code Injection Remote Code Execution Vulnerability
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 HTTP server. The issue results from the lack of proper validation of a user-supplied string before using it to write to a configuration file. An attacker can leverage this vulnerability to execute code in the context of the www-data user.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Lexmark MC3224i |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-22-332?
The severity of ZDI-22-332 is critical due to the potential for arbitrary code execution by unauthenticated attackers.
How do I fix ZDI-22-332?
To fix ZDI-22-332, update the Lexmark MC3224i printer firmware to the latest version provided by Lexmark.
Who is affected by ZDI-22-332?
The ZDI-22-332 vulnerability affects Lexmark MC3224i printer installations that have not been updated.
Can ZDI-22-332 be exploited remotely?
Yes, ZDI-22-332 can be exploited remotely without the need for authentication.
What type of vulnerability is ZDI-22-332?
ZDI-22-332 is a code execution vulnerability due to improper handling within the HTTP server of the affected printers.
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