AAPL Stock: 118.84 ( + 1.03 )

Printed from

HP claims LaserJet exploit 'sensational,' plans fix

updated 05:25 pm EST, Tue November 29, 2011

Deny forced firmware update can cause fires

HP has issued a statement claiming that reports of a major LaserJet security exploit was "sensational and inaccurate." The company emphatically claimed that speculation that devices could catch fire due to a firmware change are false. While downplaying the risk, HP is, at the same time, working on a firmware fix for the problem.

Talk of physically damaging the printers through hacks was both unreported and technically impossible, HP said. Each LaserJet has a thermal breaker, a protective device designed to prevent a printer's fuser from overheating or potentially causing a fire. There has been some speculation that, due to a security issue, the breaker could be compromised by an unauthorized firmware upgrade, causing the printer to burst into flames.

The security threat was real, however. A printer on a public network or directly linked to the Internet without a firewall is vulnerable to malicious firmware pushed to the printer. It's also possible, in the instance of Linux or Mac environments, for a specially formatted corrupt print job to trigger a firmware upgrade. HP insisted that no such breaches have happened so far.

HP didn't say when the firmware upgrade would be available. In the meantime, they are recommending to LaserJet owners that they placing printers behind a firewall, which includes most home routers. They also suggest, where possible, disabling the remote firmware upload capability on an exposed printer.

by MacNN Staff



Login Here

Not a member of the MacNN forums? Register now for free.


Network Headlines

Follow us on Facebook


Most Popular


Recent Reviews

Ultimate Ears Megaboom Bluetooth Speaker

Ultimate Ears (now owned by Logitech) has found great success in the marketplace with its "Boom" series of Bluetooth speakers, a mod ...

Kinivo URBN Premium Bluetooth Headphones

We love music, and we're willing to bet that you do, too. If you're like us, you probably spend a good portion of your time wearing ...

Jamstik+ MIDI Controller

For a long time the MIDI world has been dominated by keyboard-inspired controllers. Times are changing however, and we are slowly star ...


Most Commented