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zdiNguyen Cong Thanh - @ExLuck99 and Ha Anh Hoang - @hoangha2ZDI-23-1170
HistoryAug 24, 2023 - 12:00 a.m.

(Pwn2Own) HP LaserJet Pro M479fdw bksettings Hardcoded Cryptographic Key Authentication Bypass Vulnerability

2023-08-2400:00:00
Nguyen Cong Thanh - @ExLuck99 and Ha Anh Hoang - @hoangha2
www.zerodayinitiative.com
7
pwn2own
network-adjacent
authentication bypass
hp laserjet pro m479fdw
backup and restore
hardcoded cryptographic key
arbitrary code execution

0.006 Low

EPSS

Percentile

78.2%

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of HP LaserJet Pro M479fdw printers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Backup and Restore functionality. The issue results from a hardcoded crytographic key. An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of the device.

0.006 Low

EPSS

Percentile

78.2%