iOS 6.1 update fixes JavaScript bug

Software Update fixes error that kept turning JavaScript back on

Apple's iOS 6.1 Software Update has introduced a range of security fixes, one of which fixes the ability for hackers to override the Mobile Safari JavaScript Settings.

The bug inside iOS would inadvertently re-enable JacaScript inside Mobile Safari without user interaction after they visited a webpage with one of Apple's new Smart App Banners.

Smart App Banners are used by websites to promote Apps on the app store.

A Smart App Banner being used on the Macworld UK website

JavaScript is used by many websites to provide enhanced user interfaces and dynamic features. While it is included in most web browsers, it does present some security issues and many security conscious users prefer to disable JavaScript. Apple used JavaScript, for example, to hide a court-ordered statement relatingt to Samsung on its website.

Users can elect to turn JavaScript off, however, on the iPad. This can be done in iOS by visiting Settings > Safari and tapping Javascript to Off.

Apple's iOS 6.1 update helps ensure that once JavaScript is turned off, it stays off.

JavaScript setting set to off. Visiting a website with a Smart App Banner no longer turns the website back on

Apple's release notes state:

"If a user disabled JavaScript in Safari Preferences, visiting a site which displayed a Smart App Banner would re-enable JavaScript without warning the user. This issue was addressed by not enabling JavaScript when visiting a site with a Smart App Banner."

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.

Tags iPadsmartphonestabletsAppleiPhonehardware systemsconsumer electronics

Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Mark Hattersley

Macworld U.K.
Show Comments

Cool Tech

Toys for Boys

Family Friendly

Stocking Stuffer

SmartLens - Clip on Phone Camera Lens Set of 3

Learn more >

Christmas Gift Guide

Click for more ›

Brand Post

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Aysha Strobbe

Microsoft Office 365/HP Spectre x360

Microsoft Office continues to make a student’s life that little bit easier by offering reliable, easy to use, time-saving functionality, while continuing to develop new features that further enhance what is already a formidable collection of applications

Michael Hargreaves

Microsoft Office 365/Dell XPS 15 2-in-1

I’d recommend a Dell XPS 15 2-in-1 and the new Windows 10 to anyone who needs to get serious work done (before you kick back on your couch with your favourite Netflix show.)

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.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?