Drive-by Web attack could hit home routers

Researchers say it is possible to take over many consumer routers using malicious JavaScript code

If you haven't changed the default password on your home router, do so now.

That's what researchers at Symantec and Indiana University are saying, after publishing the results of tests that show how attackers could take over your home router using malicious JavaScript code.

For the attack to work, the bad guys would need a couple of things to go their way. First, the victim would have to visit a malicious Web site that served up the JavaScript. Second, the victim's router would have to still use the default password that it's pre-configured with it out of the box.

In tests, the researchers were able to do things like change firmware and redirect a D-Link Systems Inc. DI-524 wireless router to look up Web sites from a DNS (Domain Name System) server of their choosing. They describe these attacks in a paper, authored by Sid Stamm and Markus Jakobsson of Indiana University, and Symantec's Zulfikar Ramzan.

"By visiting a malicious Web page, a person can inadvertently open up his router for attack," the researchers write. "A Web site can attack home routers from the inside and mount sophisticated... attacks that may result in denial of service, malware infection, or identity theft."

Once the router has been compromised, victims can be redirected to fraudulent Web sites, the researchers say. So instead of downloading legitimate Microsoft software updates, for example, they could be tricked into downloading malware. Instead of online banking, they could be giving up sensitive information to phishers.

At the heart of the problem is the fact that consumer routers ship with simple, well-known default passwords, like "admin," which could be exploited by attackers.

"Owners of home routers who set a moderately secure password -- one that is non-default and non-trivial to guess -- are immune to router manipulation via JavaScript," the paper states.

The researchers blame router makers for shipping products with "poorly secure default settings."

Vendors like D-Link and Cisco Systems Inc. are aware of the problem. "It's a concern to us," said Karen Sohl, a spokeswoman with Cisco's Linksys group. "We've shipped about 30 million routers and we want those 30 million customers to understand why it's so important to change [the default password]."

Both Cisco and D-Link said they've taken steps to avoid this type of security problem. Over the past few years they've introduced step-by-step "wizard" software to configure their routers, and these products always suggest that the user come up with a unique password.

The problem is that the routers still work if the password is left as default. And that's not likely to change anytime soon, according to Michael Scott, D-Link's technical media manager.

Users wouldn't buy routers that forced them to enter unique passwords, he said. "That would only result in returned products, and then they would buy one of our competitors products," he said.

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Robert McMillan

IDG News Service
Show Comments

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Maryellen Rose George

Brother PT-P750W

It’s useful for office tasks as well as pragmatic labelling of equipment and storage – just don’t get too excited and label everything in sight!

Cathy Giles

Brother MFC-L8900CDW

The Brother MFC-L8900CDW is an absolute stand out. I struggle to fault it.

Luke Hill

MSI GT75 TITAN

I need power and lots of it. As a Front End Web developer anything less just won’t cut it which is why the MSI GT75 is an outstanding laptop for me. It’s a sleek and futuristic looking, high quality, beast that has a touch of sci-fi flare about it.

Emily Tyson

MSI GE63 Raider

If you’re looking to invest in your next work horse laptop for work or home use, you can’t go wrong with the MSI GE63.

Laura Johnston

MSI GS65 Stealth Thin

If you can afford the price tag, it is well worth the money. It out performs any other laptop I have tried for gaming, and the transportable design and incredible display also make it ideal for work.

Andrew Teoh

Brother MFC-L9570CDW Multifunction Printer

Touch screen visibility and operation was great and easy to navigate. Each menu and sub-menu was in an understandable order and category

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?