At the other day Apple unexpectedly started distributing updates for older models of smartphones, tablets and iPod player.
So, iOS 12.5.5 firmware is now available for the following devices:
- iPhone 5s
- iPhone 6
- iPhone 6 Plus
- iPad Air 1st generation
- iPad mini 2
- iPad mini 3
- iPod touch 6th generation
Download the update at Settings - General - Software Update.
Of course, no new features firmware brings, but it has an equally important function - it fixes vulnerabilities and security issues related to XNU, WebKit and CoreGraphics. For example, a vulnerability for XNU allowed code with kernel privilege to be executed. The WebKit used "maliciously created web content"to execute code. And the CoreGraphics vulnerability worked by processing a malicious PDF file.
In fact, by taking advantage of these pathways, attackers were able to gain administrator rights to your device and take possession of personal data. How actively the vulnerabilities were exploited and how many devices were affected - is unknown.