LG patches data theft bug affecting millions of Android phones

Malicious JavaScript could be entered into a contact form

LG has patched a security flaw in an application preinstalled on millions of its Android G3 smartphones that researchers found could be used to steal a variety of data.

The application, called Smart Notice, is a kind of multifunctional widget, managing contacts, notifications, and weather and traffic alerts.

Researchers from BugSec and Cynet, two computer security companies, found that they could attack a person's phone by sending them a contact with malicious JavaScript contained in the name field, according to a video.

Once the code was on the phone, any information stored on its SD card, such as private images and chat logs, could be stolen.

"The root cause for the security problem is the fact that Smart Notice does not validate the data presented to the users," BugSec and Cynet wrote in a blog post on Thursday.

The researchers found a variety of ways to trigger their malicious code and carry out actions, such as opening a phishing site that tries to steal a person's Gmail credentials or prompt a person to download a remote access trojan.

"With a little tweak, we were able to load external scripts from a remote host and 'refresh' our code every few seconds, giving us the ability to have active command and control over the LG phone and send new payloads," the companies wrote.

It was also possible to conduct a denial-of-service attack that could only be stopped by doing a hard reset of the phone, they wrote.

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.

Jeremy Kirk

IDG News Service
Show Comments

Essentials

Brother MFC-L3745CDW Colour Laser Multifunction

Learn more >

Mobile

Exec

Budget

Back To Business Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Tom Pope

Dynabook Portégé X30L-G

Ultimately this laptop has achieved everything I would hope for in a laptop for work, while fitting that into a form factor and weight that is remarkable.

Tom Sellers

MSI P65

This smart laptop was enjoyable to use and great to work on – creating content was super simple.

Lolita Wang

MSI GT76

It really doesn’t get more “gaming laptop” than this.

Jack Jeffries

MSI GS75

As the Maserati or BMW of laptops, it would fit perfectly in the hands of a professional needing firepower under the hood, sophistication and class on the surface, and gaming prowess (sports mode if you will) in between.

Taylor Carr

MSI PS63

The MSI PS63 is an amazing laptop and I would definitely consider buying one in the future.

Christopher Low

Brother RJ-4230B

This small mobile printer is exactly what I need for invoicing and other jobs such as sending fellow tradesman details or step-by-step instructions that I can easily print off from my phone or the Web.

Featured Content

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?