CVE-2024-44191: Apple Xcode Auth Bypass Vulnerability

CVE-2024-44191 Overview

CVE-2024-44191 is a state management vulnerability affecting multiple Apple operating systems and development tools. The flaw exists in how the affected software handles Bluetooth-related state transitions, potentially allowing a malicious application to gain unauthorized access to Bluetooth functionality without proper user consent or system authorization.

This vulnerability impacts a wide range of Apple devices spanning iPhones, iPads, Macs, Apple Watches, Apple TVs, and Apple Vision Pro headsets, as well as the Xcode development environment. The issue stems from improper state management that could be exploited by a locally installed malicious application.

Critical Impact

A malicious application running on an affected Apple device could bypass normal Bluetooth permission controls, potentially enabling unauthorized Bluetooth operations, device pairing, or data transmission without user knowledge.

Affected Products

• Apple iOS versions prior to 17.7 and 18
• Apple iPadOS versions prior to 17.7 and 18
• Apple macOS versions prior to Sequoia 15
• Apple watchOS versions prior to 11
• Apple tvOS versions prior to 18
• Apple visionOS versions prior to 2
• Apple Xcode versions prior to 16

Discovery Timeline

• September 17, 2024 - CVE-2024-44191 published to NVD
• November 4, 2025 - Last updated in NVD database

Technical Details for CVE-2024-44191

Vulnerability Analysis

This vulnerability resides in the Bluetooth subsystem's state management across Apple's operating systems. The flaw allows applications to transition between privilege states improperly, bypassing the normal Bluetooth entitlement and permission checks that Apple enforces to protect user privacy.

When an application requests Bluetooth access on Apple devices, the system normally validates the request against the app's entitlements and prompts the user for permission. The improper state management in vulnerable versions allows this validation to be circumvented under certain conditions, granting the application access to Bluetooth resources without going through the proper authorization flow.

The local attack vector requires the malicious application to already be installed on the target device. However, given the prevalence of third-party apps on iOS and macOS devices, this represents a significant attack surface. An attacker could distribute a malicious app through social engineering or by compromising a legitimate app.

Root Cause

The root cause of CVE-2024-44191 is improper state management in the Bluetooth framework components. Apple's description indicates the vulnerability was "addressed through improved state management," suggesting that the original implementation failed to properly validate or maintain the state of Bluetooth permission requests and grants.

State management vulnerabilities typically occur when a system fails to:

• Properly initialize state variables before use
• Validate state transitions between different privilege levels
• Maintain atomic state changes during concurrent operations
• Clear or reset state appropriately after operations complete

In this case, the flawed state management allowed applications to achieve an unauthorized Bluetooth access state that should have been denied.

Attack Vector

The attack requires local access, meaning an attacker must first install a malicious application on the target device. The attack flow involves:

1. Initial Compromise: The attacker convinces the user to install a malicious application, potentially disguised as a legitimate utility or game
2. State Manipulation: The malicious app exploits the state management flaw to request Bluetooth access in a way that bypasses normal permission checks
3. Unauthorized Access: The app gains access to Bluetooth functionality without user consent
4. Exploitation: With unauthorized Bluetooth access, the attacker could potentially discover nearby devices, initiate unauthorized connections, or exfiltrate data via Bluetooth

Since this is a local attack vector requiring user interaction to install the malicious app, exploitation in the wild depends on successful social engineering or supply chain compromises.

Detection Methods for CVE-2024-44191

Indicators of Compromise

• Applications accessing Bluetooth APIs without corresponding user-granted permissions
• Unexpected Bluetooth activity from applications that don't typically use Bluetooth functionality
• System logs showing Bluetooth state transitions that bypass normal permission prompts
• Applications maintaining Bluetooth connections without the expected privacy indicators

Detection Strategies

• Monitor for applications accessing CoreBluetooth framework APIs without proper entitlements
• Implement application behavior analysis to detect apps exhibiting suspicious Bluetooth access patterns
• Review system logs for anomalous Bluetooth state management events
• Deploy endpoint detection solutions capable of monitoring Bluetooth subsystem interactions

Monitoring Recommendations

• Enable comprehensive logging for Bluetooth-related system events on managed devices
• Configure MDM solutions to alert on applications requesting Bluetooth permissions unexpectedly
• Implement behavioral monitoring for installed applications to detect permission bypass attempts
• Regularly audit installed applications for known malicious indicators

How to Mitigate CVE-2024-44191

Immediate Actions Required

• Update all Apple devices to the patched versions: iOS 17.7/18, iPadOS 17.7/18, macOS Sequoia 15, watchOS 11, tvOS 18, visionOS 2, and Xcode 16
• Review installed applications and remove any untrusted or unnecessary apps
• Enable automatic updates on all Apple devices to ensure timely security patches
• For enterprise environments, use MDM to enforce minimum OS versions across managed devices

Patch Information

Apple has released patches for all affected products. The following versions contain the fix for CVE-2024-44191:

Organizations should prioritize patching iOS and iPadOS devices due to their prevalence and exposure to third-party applications. Additional technical details are available in the Full Disclosure Post #32, Full Disclosure Post #33, and related security disclosures.

Workarounds

• Disable Bluetooth on devices when not actively in use to reduce attack surface
• Only install applications from trusted sources and review app permissions carefully
• For enterprise devices, restrict installation of applications to approved lists via MDM policies
• Monitor devices for applications exhibiting unexpected Bluetooth behavior and remove suspicious apps