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

Brand Post

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.

Ada Chan

Dynabook Portégé X30L-G

I highly recommend the Dynabook Portégé® X30L-G notebook for everyday business use, it is a benchmark setting notebook of its generation in the lightweight category.

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.

Featured Content

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?