CVE-2024-44148: Apple macOS Sandbox Escape Vulnerability

CVE-2024-44148 Overview

CVE-2024-44148 is a critical sandbox escape vulnerability affecting Apple macOS systems. The vulnerability stems from improper validation of file attributes, which allows a malicious application to break out of its sandboxed environment. This sandbox escape could enable an attacker to access protected system resources, user data, and execute privileged operations outside the normal application containment boundaries.

Critical Impact

A malicious application can escape its sandbox environment, potentially compromising the entire system and accessing sensitive data beyond its intended scope.

Affected Products

• Apple macOS versions prior to macOS Sequoia 15
• Systems running vulnerable macOS versions with sandboxed applications
• Enterprise and consumer Mac devices without the security update

Discovery Timeline

• 2024-09-17 - CVE CVE-2024-44148 published to NVD
• 2025-11-04 - Last updated in NVD database

Technical Details for CVE-2024-44148

Vulnerability Analysis

This vulnerability affects the macOS sandbox implementation, a critical security boundary designed to isolate applications and limit their access to system resources. The flaw exists in how the operating system validates file attributes when applications interact with the file system.

When a sandboxed application performs file operations, the system should validate that the requested operations comply with the sandbox policy. However, due to insufficient validation of file attributes, an application can craft specific file operations that bypass these sandbox restrictions. This creates a pathway for the application to access resources and perform actions that should be prohibited by the sandbox policy.

The network-based attack vector with low complexity and no required privileges makes this vulnerability particularly dangerous, as it could potentially be triggered through malicious content delivered via web browsing or email attachments.

Root Cause

The root cause of CVE-2024-44148 lies in insufficient validation of file attributes within the macOS sandbox enforcement mechanism. When processing file operations, the system fails to properly verify that file attributes conform to sandbox policy restrictions. This validation gap allows specially crafted file attribute manipulations to circumvent the security boundaries that the sandbox is designed to enforce.

Apple addressed this issue by implementing improved validation of file attributes, ensuring that all file operations are properly checked against sandbox policies before being permitted.

Attack Vector

The vulnerability can be exploited through a network-based attack vector. An attacker could deliver a malicious application or content that, when executed or processed on the target system, exploits the file attribute validation flaw to escape the sandbox. The attack requires no user interaction beyond running the malicious application and does not require any special privileges.

Once sandbox escape is achieved, the attacker gains access to the broader system context, potentially enabling:

• Access to sensitive user data outside the application's sandbox
• Modification of system files and configurations
• Installation of persistent malware
• Lateral movement to other applications and services

The sandbox escape vulnerability mechanism involves manipulating file attributes in a way that the validation logic fails to detect, allowing operations that should be blocked by the sandbox policy. For detailed technical information, refer to the Apple Support Document and the Full Disclosure Mailing List.

Detection Methods for CVE-2024-44148

Indicators of Compromise

• Unusual file access patterns from sandboxed applications attempting to read/write outside their container
• Applications accessing protected directories such as /Library, /System, or other user home directories
• Unexpected child processes spawned by sandboxed applications
• Sandbox violation logs showing repeated boundary-testing behavior

Detection Strategies

• Monitor macOS sandbox violation logs in /var/log/system.log and Console.app for sandbox denial events followed by successful access
• Implement endpoint detection rules for applications accessing resources outside their designated sandbox containers
• Deploy SentinelOne's behavioral AI to detect anomalous file system access patterns indicative of sandbox escape attempts
• Review system integrity protection (SIP) status and monitor for any unauthorized modifications

Monitoring Recommendations

• Enable enhanced file system auditing on macOS systems using the OpenBSM audit framework
• Configure alerts for any application processes that access sensitive system locations after spawning from a sandboxed parent
• Monitor for unusual quarantine attribute modifications on downloaded files
• Implement continuous monitoring of sandbox policy violations with correlation to subsequent suspicious activity

How to Mitigate CVE-2024-44148

Immediate Actions Required

• Update all macOS systems to macOS Sequoia 15 or later immediately
• Audit installed applications and remove any untrusted or unnecessary software
• Enable Gatekeeper and ensure only applications from identified developers or the App Store are allowed
• Review and restrict application permissions through System Preferences > Security & Privacy

Patch Information

Apple has released macOS Sequoia 15 which addresses this vulnerability with improved validation of file attributes. Organizations should prioritize deploying this update across all Mac endpoints.

For detailed patch information, refer to the official Apple Support Document.

Workarounds

• Restrict execution of untrusted applications using macOS Gatekeeper with the most restrictive settings
• Implement application allowlisting to prevent execution of unauthorized software
• Use Mobile Device Management (MDM) solutions to enforce security policies and restrict application installation
• Isolate critical systems and limit network exposure for systems that cannot be immediately patched

# Verify macOS version to ensure system is patched
sw_vers -productVersion
# Should return 15.0 or higher for macOS Sequoia

# Check Gatekeeper status
spctl --status
# Should return "assessments enabled"

# Enable Gatekeeper if disabled
sudo spctl --master-enable