CVE-2022-29844: A Classic Buffer Overflow on the Western Digital My Cloud Pro Series PR4100

This post covers an exploit chain demonstrated by Luca Moro (@johncool__) during Pwn2Own Toronto 2022. At the contest, he used a classic buffer overflow to gain code execution on the My Cloud Pro Series PR4100 Network Attached Storage (NAS) device. He also displayed a nifty message on the device. Luca’s successful entry earned him $40,000 and 4 points towards Master of Pwn. All Pwn2Own entries are accompanied by a full whitepaper describing the vulnerabilities being used and how …

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