Apple has released emergency security updates to patch two actively exploited zero-day vulnerabilities targeting Intel-based macOS systems. The vulnerabilities affect the JavaScriptCore and WebKit components, both of which are critical to macOS and other Apple operating systems.

Details of the Vulnerabilities

1. 
   

   CVE-2024-44308 (JavaScriptCore)

   
   
   
   
   • Impact: Remote Code Execution (RCE).
   
   
   • Description: Allows attackers to execute arbitrary code through maliciously crafted web content.
   
   
   • Component: JavaScriptCore, a fundamental part of macOS used to process JavaScript in Safari and other Apple applications.
   
   
   
   


2. 
   

   CVE-2024-44309 (WebKit)

   
   
   
   
   • Impact: Cross-Site Scripting (XSS).
   
   
   • Description: Enables cross-site scripting (CSS) attacks, potentially compromising sensitive data and user sessions.
   
   
   
   

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Affected Systems and Fixes

Apple has addressed these issues in the following updates:

• macOS: Fixed in macOS Sequoia 15.1.1.


• iOS/iPadOS: Patched in iOS and iPadOS 17.7.2 and 18.1.1.


• visionOS: Updated to 2.1.1.

The vulnerabilities were reported by Clément Lecigne and Benoît Sevens from Google’s Threat Analysis Group (TAG), which specializes in identifying zero-days and targeted exploits.

Exploitation in the Wild

Apple has acknowledged that the flaws were exploited in attacks, particularly targeting Intel-based Macs, but specific details remain scarce. Google TAG, which discovered the flaws, has also withheld further insights into exploitation methods.

Apple Zero-Days in 2024

The patching of these vulnerabilities brings the total number of zero-day fixes by Apple in 2024 to six, significantly fewer than the 20 zero-days addressed in 2023. Apple has been steadily improving its detection and mitigation of such issues, reducing exploit opportunities compared to prior years.

Recommendations

1. 
   

   Update Immediately:

   
   
   
   
   • Ensure macOS is updated to 15.1.1 (Sequoia).
   
   
   • Update iPhones and iPads to the latest iOS and iPadOS versions (17.7.2 or 18.1.1).
   
   
   • visionOS users should upgrade to 2.1.1.
   
   
   
   


2. 
   

   Enable Auto-Updates: Enable automatic updates for all Apple devices to minimize exposure to newly discovered vulnerabilities.

   
   


3. 
   

   Exercise Caution with Web Content: As the vulnerabilities involve web exploitation, users should avoid suspicious websites or untrusted links until systems are fully updated.

   
   

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Source: bleepingcomputer.com

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