HP Printer Remote Code Execution

Man – I’m such a sucker for these long, detailed reverse engineering/security posts.

This one does not disappoint!

The video is full of not-so-subtle hints that HP’s printers are secure and buying a non-HP printer is bordering on criminally negligent. For example, the opening sequence, white text on black background states “There are hundreds of millions of business printers in the world. Less than 2% of them are secure”. From here, the “Wolf” executes a series of unlikely attacks that leverage the insecure printers to own the companies network and sensitive data, with the obvious implication being that HP printers would not be vulnerable to these attacks.

While the “Printer Hacking Wiki” and associated PRET toolkit are great resources, it appears that no one has taken a deep dive into the security of modern HP business printers to validate these claims.

So, we went out and bought a couple of printers, the MFP-586 and the M553. As HP’s Wolf says, “time to eat”.

via A Sheep in Wolf’s Clothing – Finding RCE in HP’s Printer Fleet

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