ZDI-22-328: (Pwn2Own) Lexmark MC3224i PostScript Out-Of-Bounds Write 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 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 the service account.
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Lexmark MC3224i |
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Reference Links
Frequently Asked Questions
What is the severity of ZDI-22-328?
ZDI-22-328 is classified as a critical vulnerability, allowing remote code execution without authentication.
How do I fix ZDI-22-328?
To mitigate ZDI-22-328, update the Lexmark MC3224i printer firmware to the latest version provided by Lexmark.
Who is affected by ZDI-22-328?
The vulnerability ZDI-22-328 affects Lexmark MC3224i printers that are exposed to network adjacency.
Can ZDI-22-328 be exploited remotely?
Yes, ZDI-22-328 can be exploited remotely by attackers within the same network segment without requiring authentication.
What type of attack does ZDI-22-328 facilitate?
ZDI-22-328 facilitates arbitrary code execution attacks via crafted PostScript data.
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- alias/ZDI-CAN-15924
- alias/CVE-2021-44738
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