CVE-2023-32439: Apple Multiple Products WebKit Type Confusion Vulnerability

CVE-2023-32439 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2023-06-23

A type confusion vulnerability in the WebKit engine allows for arbitrary code execution when processing maliciously crafted web content. The issue was addressed with improved checks across multiple Apple operating systems and the Safari browser.

Technologies: Apple Multiple Products. Vendors: Apple.

Quick answers

Is CVE-2023-32439 exploited in the wild?
Yes. CVE-2023-32439 is known to be exploited in the wild, first recorded on 23 June 2023. Treat it as urgent.
How severe is CVE-2023-32439?
Critical severity, with a CVSS score of 8.8, published 23 June 2023.
Which products and versions are affected?
Apple WebKit Fixed in iOS 16.5.1, iPadOS 16.5.1, iOS 15.7.7, iPadOS 15.7.7, macOS Ventura 13.4.1, Safari 16.5.1; WebKitGTK WebKitGTK+ up to (excluding) 2.42.3.
Is there a fix for CVE-2023-32439?
A patch was published on 2023-06-23: Fixed in iOS 16.5.1, iPadOS 16.5.1, iOS 15.7.7, iPadOS 15.7.7, macOS Ventura 13.4.1, and Safari 16.5.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-32439 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2023-32439?
Check whether you run Apple Multiple Products. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Apple WebKit Fixed in iOS 16.5.1, iPadOS 16.5.1, iOS 15.7.7, iPadOS 15.7.7, macOS Ventura 13.4.1, Safari 16.5.1
  • WebKitGTK WebKitGTK+ up to (excluding) 2.42.3

Timeline

  • 2023-06-23: disclosed: Apple is aware of reports that this issue may have been actively exploited.
  • 2023-06-23: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
  • 2023-06-23: patched: Fixed in iOS 16.5.1, iPadOS 16.5.1, iOS 15.7.7, iPadOS 15.7.7, macOS Ventura 13.4.1, and Safari 16.5.1.

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