Video: 'Print me if you dare'

Summary:This 28c3 presentation exposes weaknesses within HP LaserJet firmware update process that allows an attacker to make arbitrary modifications to the NVRAM contents of the device.

In this presentation at the 28c3 conference, Columbia University researchers Ang Cui and Jonathan Voris discuss firmware modification attacks against HP LaserJet printers.

The discussion centers on weaknesses within the firmware update process that allows an attacker to make arbitrary modifications to the NVRAM contents of the device.

"The attacks we present exploit a functional vulnerability common to all HP printers, and do not depend on any specific code vulnerability. These attacks cannot be prevented by any authentication mechanism on the printer, and can be delivered over the network, either directly or through a print server (active attack) and as hidden payloads within documents (reflexive attack)," the researchers explained.

Just last week, HP shipped patches for the vulnerabilities covered in this presentation.

Topics: Hewlett-Packard, Hardware, Printers, Security, Servers

About

Ryan Naraine is a journalist and social media enthusiast specializing in Internet and computer security issues. He is currently security evangelist at Kaspersky Lab, an anti-malware company with operations around the globe. He is taking a leadership role in developing the company's online community initiative around secure content managem... Full Bio

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