Home » Apple » Apple Mac OS X Sleep Mode Security Flaw

yosemite-sys_prefs-power_nap_desktop

Some Apple Macs have a particularly terrible flaw that lets hackers sneak in and remain undetected security researcher Pedro Vilaca noted in his blog.

Older Apple computers may be susceptible to a new zero-day vulnerability the flaw can be used to install rootkit malware that’s nearly undetectable and very hard to remove. Macs purchased one year ago or before, apparently are susceptible to the attack.

When a Mac goes into sleep mode and wakes back up, it allows direct access to the BIOS. It’s a weird quirk that lets someone tamper with the code there. The vulnerability is in Apple computers’ UEFI (unified extensible firmware interface), which is designed to improve upon a machine’s BIOS.

UEFI code is usually sealed off but Vilaca discovered that when Apple computers made before mid-2014 go to sleep and are reawakened, the code is unlocked and able to be modified. The attack was successfully tested on a MacBook Pro Retina, a MacBook Pro 8.2 and a MacBook Air, all running the latest EFI firmware available. Macs made in 2014 are not vulnerable, which could mean Apple already found the bug but hasn’t patched older models yet.

The only way to defend against the vulnerability is to always shut your computer down or never let it go to sleep by adjusting the settings in the power save area under preferences. A similar exploit, called Thunderstrike, was discovered last year, but Vilaca claims the one he found could be even more dangerous as it may be possible to remotely exploit the bug.

Comments

comments

Latest

data plan How To Prevent Unnecessary Mobile Phone And Data Costs
surface book What’s in Store for Business Tech in 2018?
Microsoft Listings and Connections Review
spotify Spotify vs Spotify Premium
Microsoft Invoicing Office 365 Microsoft Invoicing Review

Tech Geek Today

Tech Geek Today

MonTueWedThuFriSatSun
  12345
6789101112
20212223242526
27282930   
       
      1
9101112131415
16171819202122
23242526272829
3031     
    123
45678910
11121314151617
252627282930 
       
 123456
78910111213
14151617181920
21222324252627
28293031   
       

Subscribe To The Technology Geek

Archives