CVE-2024-44270: Apple macOS Auth Bypass Vulnerability

CVE-2024-44270 Overview

CVE-2024-44270 is a sandbox escape vulnerability affecting Apple macOS. A logic issue in the operating system allowed a sandboxed process to circumvent sandbox restrictions, breaking the isolation boundary that protects the host system from untrusted code. Apple addressed the flaw by introducing improved validation in macOS Sequoia 15.1, macOS Sonoma 14.7.1, and macOS Ventura 13.7.1. The weakness maps to [CWE-863] Incorrect Authorization. With a network attack vector and changed scope, an attacker who can run code inside the sandbox can affect resources outside it.

Critical Impact
A sandboxed process may be able to circumvent sandbox restrictions, allowing access to resources outside the sandbox boundary on unpatched macOS systems.

Affected Products

Apple macOS Ventura prior to 13.7.1
Apple macOS Sonoma prior to 14.7.1
Apple macOS Sequoia prior to 15.1

Discovery Timeline

2024-10-28 - CVE-2024-44270 published to the National Vulnerability Database (NVD)
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-44270

Vulnerability Analysis

The vulnerability is a logic flaw in the macOS sandbox enforcement layer. The macOS App Sandbox is designed to constrain what a process can do, limiting access to files, network resources, and inter-process communication. When the enforcement logic fails to correctly validate an operation, a sandboxed process can perform actions intended to be blocked. The scope is marked as changed, meaning the impact extends beyond the sandboxed component to other parts of the system. The advisory notes confidentiality impact without integrity or availability impact, consistent with unauthorized access to data outside the sandbox.

Root Cause

Apple describes the underlying problem as a logic issue resolved through improved validation. The sandbox policy evaluation did not adequately verify the conditions under which certain operations were permitted. This is consistent with the [CWE-863] Incorrect Authorization classification, where an authorization check exists but is implemented incorrectly. Specific component-level technical details are not disclosed in the public advisory. See the Apple Support Document #121564 for vendor-provided context.

Attack Vector

Exploitation requires code execution inside a sandboxed process. This is commonly achieved by chaining a separate initial-access vulnerability — for example, a memory corruption flaw in a browser, document viewer, or other sandboxed application. Once inside the sandbox, the attacker triggers the flawed validation path to perform operations the sandbox policy was meant to deny. No user interaction is required for the sandbox-escape step itself, and no elevated privileges are needed to reach the vulnerable code path. Public proof-of-concept code is not available at the time of writing.

Detection Methods for CVE-2024-44270

Indicators of Compromise

macOS endpoints running build versions earlier than 15.1, 14.7.1, or 13.7.1 accessing files or system resources outside an application's declared sandbox container.
Sandboxed processes (for example, browser renderers or document preview helpers) spawning child processes or opening Mach ports inconsistent with their entitlements.
Unexpected reads or writes by sandboxed bundle identifiers to user data directories outside ~/Library/Containers/<bundle-id>/.

Detection Strategies

Monitor sandbox_violation and sandbox_extension events through Endpoint Security Framework (ESF) telemetry to catch attempts that hit policy edges.
Correlate process ancestry and entitlement metadata to flag sandboxed processes performing privileged file or network operations.
Hunt for behavioral chains in which a sandboxed application is followed by anomalous file system access or LaunchAgent persistence writes.

Monitoring Recommendations

Inventory macOS versions across the fleet and alert on hosts that remain on builds older than the patched releases.
Forward ESF, Unified Log, and EDR process telemetry to a central data lake to enable retroactive hunting once additional indicators emerge.
Track outbound network connections from sandboxed application contexts that deviate from baselined behavior for that bundle identifier.

How to Mitigate CVE-2024-44270

Immediate Actions Required

Upgrade affected macOS systems to macOS Sequoia 15.1, macOS Sonoma 14.7.1, or macOS Ventura 13.7.1 or later.
Prioritize patching on endpoints that run high-risk sandboxed applications such as web browsers, email clients, and document viewers.
Verify patch deployment through MDM compliance reporting and reject access for non-compliant devices.

Patch Information

Apple released fixes in macOS Sequoia 15.1, macOS Sonoma 14.7.1, and macOS Ventura 13.7.1. Refer to the Apple Support Document #121568 and Apple Support Document #121570 for the full list of addressed issues and installation guidance. Updates are distributed through Software Update and Apple Business Manager / MDM channels.

Workarounds

No vendor-supplied workaround exists; applying the security update is the supported remediation.
Reduce exposure by limiting installation of untrusted applications and disabling browser extensions or document-handling features that are not required.
Enforce Gatekeeper, System Integrity Protection, and standard (non-admin) user accounts to limit downstream impact if a sandbox escape is attempted.

bash

# Verify the installed macOS version on a host
sw_vers -productVersion

# Trigger software update check and install available updates
sudo softwareupdate --list
sudo softwareupdate --install --all --restart