Apple released the latest software update of iOS with the file size of 335.2 MB. To update your device go to settings then general then about then software update and click install now.
Here is the release note from apple.com
About Apple security updates
For our customers’ protection, Apple doesn’t disclose, discuss, or confirm security issues until an investigation has occurred and patches or releases are available. Recent releases are listed on the Apple security updates page.
Apple security documents reference vulnerabilities by CVE-ID when possible.
For more information about security, see the Apple Product Security page.
iOS 12.1.4
Released February 7, 2019
FaceTime
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: The initiator of a Group FaceTime call may be able to cause the recipient to answer
Description: A logic issue existed in the handling of Group FaceTime calls. The issue was addressed with improved state management.
CVE-2019-6223: Grant Thompson of Catalina Foothills High School, Daven Morris of Arlington, TX
Foundation
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: An application may be able to gain elevated privileges
Description: A memory corruption issue was addressed with improved input validation.
CVE-2019-7286: an anonymous researcher, Clement Lecigne of Google Threat Analysis Group, Ian Beer of Google Project Zero, and Samuel Groß of Google Project Zero
IOKit
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: An application may be able to execute arbitrary code with kernel privileges
Description: A memory corruption issue was addressed with improved input validation.
CVE-2019-7287: an anonymous researcher, Clement Lecigne of Google Threat Analysis Group, Ian Beer of Google Project Zero, and Samuel Groß of Google Project Zero
Live Photos in FaceTime
Available for: iPhone 5s and later, iPad Air and later, and iPod touch 6th generation
Impact: A thorough security audit of the FaceTime service uncovered an issue with Live Photos
Description: The issue was addressed with improved validation on the FaceTime server.
CVE-2019-7288: Apple
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