CVE-2023-32373: Apple Multiple Products WebKit Use-After-Free Vulnerability

CVE-2023-32373 · Severity: critical · CVSS 8.8 · Exploited in the wild · Published 2023-05-22

A use-after-free vulnerability in Apple's WebKit engine allows for arbitrary code execution when processing maliciously crafted web content. The issue stems from improper memory management and affects multiple Apple operating systems and browsers, as well as third-party products utilizing WebKit.

Technologies: Apple Multiple Products. Vendors: Apple.

Quick answers

Is CVE-2023-32373 exploited in the wild?
Yes. CVE-2023-32373 is known to be exploited in the wild, first recorded on 22 May 2023. Treat it as urgent.
How severe is CVE-2023-32373?
Critical severity, with a CVSS score of 8.8, published 22 May 2023.
Which products and versions are affected?
Apple WebKit; Apple Safari < 16.5; Apple iOS < 15.7.6, 16.0 < 16.5; Apple iPadOS < 15.7.6, 16.0 < 16.5; and 4 more.
Is there a fix for CVE-2023-32373?
A patch was published on 2023-05-22: Fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6/16.5, iPadOS 15.7.6/16.5, and Safari 16.5. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2023-32373 attacked?
It is attacked over the network, in a software library.
Am I affected by CVE-2023-32373?
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
  • Apple Safari < 16.5
  • Apple iOS < 15.7.6, 16.0 < 16.5
  • Apple iPadOS < 15.7.6, 16.0 < 16.5
  • Apple macOS Ventura < 13.4
  • Apple tvOS < 16.5
  • Apple watchOS < 9.5
  • WebKitGTK WebKitGTK+ < 2.42.3

Timeline

  • 2023-05-22: disclosed
  • 2023-05-22: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2023-05-22: patched: Fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6/16.5, iPadOS 15.7.6/16.5, and Safari 16.5.
  • 2023-05-22: exploited: Apple is aware of reports that this issue may have been actively exploited.

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