Latest in Gear

Image credit:

OS X update fixed 'simple' bug that could leak your iMessages

Clicking a JavaScript link sends attackers a copy of your entire chat history.
Share
Tweet
Share

Sponsored Links

Researchers explained one large security hole in Apple's iMessage app that received a patch last month, but until now we didn't have details on another vulnerability fixed at the same time. By tricking users into clicking a specially-crafted link, hackers could gain access to the usually encrypted communications in OS X El Capitan's Messages. "You don't need a graduate degree in mathematics to exploit it, nor does it require advanced knowledge of memory management, shellcode or ROP chains," according to security researchers at Bishop Fox -- just knowledge of basic JavaScript.

Simply clicking the nefarious link from a sender grants them access to your plaintext messages and any attachments. That bit of JavaScript could even look like a legitimate link, as you'll see in the video below. From there the cross-site scripting attack (XSS) is executed and uploads your stuff to a remote server. Flaws like these have usually been common in web browsers, but as the team points out, use of rendering engines like WebKit can bring them to other apps as well.

The team reported the problem (CVE-2016-1764) to Apple before publicly announcing how it works, and the company's patch fixes things with "improved content security policy checks." As always, make sure you have all of the latest updates installed, and double check links before blindly clicking on them. Protip: The ones that start with javascript:// probably won't actually reveal what all of your Facebook friends are secretly saying about you.

All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.
Comment
Comments
Share
Tweet
Share

Popular on Engadget

Engadget's 2020 Back-to-School Guide

Engadget's 2020 Back-to-School Guide

View
NVIDIA is teasing something big for August 31st

NVIDIA is teasing something big for August 31st

View
'Fall Guys' racks up two million players on Steam after just five days

'Fall Guys' racks up two million players on Steam after just five days

View
'Xbox Series S' console revealed by controller packaging

'Xbox Series S' console revealed by controller packaging

View
Watch AI-controlled virtual fighters take on an Air Force pilot on August 18th

Watch AI-controlled virtual fighters take on an Air Force pilot on August 18th

View

From around the web

Page 1Page 1ear iconeye iconFill 23text filevr