We use cookies to provide you with a better experience. If you continue to use this site, we'll assume you're happy with this. Alternatively, click here to find out how to manage these cookies

hide cookie message
78,230 News Articles

HP printer owners exposed by web hack

Flaw lets scammers access printed documents

HP printer owners are being urged to update firmware in a bid to ensure hackers can't get access to documents previously printed from the device.

HP said that users of certain LaserJet, Color LaserJet and Digital Sender models are affected, and urged them to immediately download and install firmware upgrades.

The devices include 10 different LaserJet models - ranging from the 2410 to the 9050 - two Color LaserJet models and the 9200C Digital Sender, a sheet-fed document scanner.

According to Digital Defense, the security company that reported the problem to HP last October, attackers can exploit a bug in the printers' web-based control interface to "read arbitrary system configuration files, cached documents, etc".

Visit Security Advisor for the latest internet threat news, FREE net threat email newsletters, and internet security products

Visit Broadband Advisor for the latest internet news, reviews, tips & tricks - and to take advantage of PC Advisor's unique, independent Broadband Speed Tester

Exploiting the vulnerability, the Digital Defense researchers said, is "trivial" with common web server "directory traversal" tactics. A directory transversal attack is an HTTP-based exploit that lets attackers access restricted directories, and execute commands outside of the server's root directory.

Adrien de Beaupre, an analyst with the SANS Institute 's Internet Storm Center (ISC), agreed the importance of patching printers. "The impact might not seem severe, as in the attacker can view the printer configuration; however, viewing cached versions of printed documents Can be," he said in an alert on the ISC site.

Other than patching, the only other defensive measure available is to disable access to the printers' online control interface, de Beaupre added.

HP listed the affected printers in a security bulletin, which also included instructions on how to download the firmware update.

Computerworld

See also: HP won't sell Mini 1000 Linux netbook in UK


IDG UK Sites

OnePlus Two release date rumours: Something's happening on 22 July

IDG UK Sites

13in MacBook Air review, Apple's MacBook Air 2014 reviewed

IDG UK Sites

5 reasons to buy an electric car and 5 reasons not to

IDG UK Sites

Evernote Skitch: the best way for creatives to doodle feedback