For older iPhones incompatible with iOS 15, Apple releases iOS 12.5.5

Apple releases iOS 12.5.5. And has published security patches to address PDF issues, online content and malicious application code execution.

This is the first update to iOS 12 since June, when Apple corrected a problem that allows the malicious execution of web content. The update to iOS 12.5.5 tackles similar problems with malicious PDFs, web content and apps.

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The upgrade notes for security read as follows:

CoreGraphics

  • For the following products: iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3 and iPod touch (6th generation)
  • Impact: The malicious processing of a PDF can lead to the arbitrary execution of programmes. Apple is aware of a report that this problem could have been exploited actively.
  • Description: An integer overflow with improved input validation has been resolved.
  • CVE-2021-30860: Citizen Lab

WebKit

  • For the following products: iPhone 5, iPhone 6, iPhone 6 Plus, iPad Air, iPad Mini2, iPad Mini 3 and iPod touch (6th generation)
  • Impact: malicious web content processing can lead to arbitrary code execution. Apple knows a report that this problem might have been exploited deliberately.
  • Description: Use with improved memory management once free problem was fixed.
  • CVE-2021-30858: a anonymous researcher

XNU

  • For the following products: iPhone 5s, iPhone 6, iPhone 6 Plus, iPad Air, iPad mini 2, iPad mini 3 and iPod touch (6th generation)
  • Impact: A rogue application can execute arbitrary kernel code. Apple knows that this problem is exploited in the wild.
  • Description: Improved state handling addressed a form of confusion problem.
  • CVE-2021-30869: Google Threat Analysis Group’s Erye Hernandez, Google Threat Analysis Group’s Clement Lecigne, and Google Project’s Ian Beer Zero

iPhone owners 6 or earlier will be notified of an update. Navigate to the General app Settings and then pick Software Update for iOS 12.5.5 installation.

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