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Black Arrow Cyber Advisory - 22 June 2023 – Apple Releases Patches for Actively Exploited Flaws in iOS, macOS, and Safari

Executive summary

Apple has recently released updates for iOS, iPadOS, macOS, watchOS and Safari browser. These updates address a set of flaws that were actively exploited in the wild with the most severe allowing an attacker to perform Arbitrary Code Execution.

What’s the risk to me or my business?

Depending on the privileges associated with the user, if the vulnerability is successfully exploited an attacker could install programs; view, change, or delete data; or create new accounts with full user rights. This can lead to compromise of the confidentiality, integrity, and availability of organisational information in that could be accessed from the affected asset.

Technical Summary

The two vulnerabilities below have been actively exploited in the mobile surveillance campaign called Operation Triangulation.

CVE-2023-32434 – This is an integer overflow vulnerability in the kernel that could be exploited by a malicious app to execute arbitrary code with kernel privileges.

CVE-2023-32435 – This is a memory corruption vulnerability in Webkit that could lead to arbitrary code execution when processing specially crafted web content.

The updates are available for the following platforms:

  • iOS 16.5.1 and iPadOS 16.5.1 - iPhone 8 and later, iPad Pro (all models), iPad Air 3rd generation and later, iPad 5th generation and later, and iPad mini 5th generation and later

  • iOS 15.7.7 and iPadOS 15.7.7 - iPhone 6s (all models), iPhone 7 (all models), iPhone SE (1st generation), iPad Air 2, iPad mini (4th generation), and iPod touch (7th generation)

  • macOS Ventura 13.4.1, macOS Monterey 12.6.7, and macOS Big Sur 11.7.8

  • watchOS 9.5.2 - Apple Watch Series 4 and later

  • watchOS 8.8.1 - Apple Watch Series 3, Series 4, Series 5, Series 6, Series 7, and SE, and

  • Safari 16.5.1 - Macs running macOS Monterey

What can I do?

It is recommended to apply the update provided by Apple to all vulnerable systems immediately as the flaws have been addressed in this patch.

Further details on the Apple security updates can be found here: https://support.apple.com/en-us/HT201222

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