Apple on Wednesday released macOS Ventura 13.4.1, an update that includes some critical zero-day security fixes. The release notes simply state that the update includes “important security fixes and is recommended for all users.”
It’s unclear if this update includes any other fixes, but Apple recently promised that a patch will fix a storage issue with the new Mac Pro. According to the security notes, the update includes the same two security fixes as the iOS 16.5.1 update:
Core
- Impact: An application may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.
- Description: An integer overflow has been resolved with better input validation.
- CVE-2023-32434: Georgy Kucherin (@kucher1n), Leonid Bezvershenko (@bzvr_) and Boris Larin (@oct0xor) from Kaspersky
Webkit
- Impact: Processing maliciously crafted web content may lead to the execution of arbitrary code. Apple is aware of a report that this issue may have been actively exploited.
- Description: A type confusion issue has been resolved with improved checks.
- CVE-2023-32439: an anonymous researcher
Although the kernel patch details include an issue that was exploited on iPhones, it is still important to apply the patch in macOS. So it is a good idea to install the update as soon as possible. For older Macs, there are also updates to macOS Monterey (12.6.7) and macOS Big Sur (11.7.8) that fix the kernel issue.
How to install macOS Ventura 13.4.1
An Internet connection is required to install the update and the Mac must restart. To install macOS Ventura 13.4.1:
- Click on the Apple menu and select System Parameters.
- Select General in the left sidebar.
- Select Software update in the main section of the window.
- The Mac will check online for available updates. If the update is available, a description will appear. Click on the Update now button to start the installation. The update will download to your Mac and the installer will run. The Mac will need to restart to complete the installation.
See our macOS Ventura guide for more information. Additionally, Apple offers similar security patches for the iPhone and iPad.