CVE-2024-44297: Apple iPadOS Denial-of-Service Vulnerability

CVE-2024-44297 Overview

CVE-2024-44297 is a denial-of-service vulnerability affecting multiple Apple operating systems. The issue stems from insufficient bounds checking during message processing, allowing an attacker to craft a malicious message that, when processed by a vulnerable device, causes a denial-of-service condition. Apple addressed this vulnerability with improved bounds checks across their ecosystem of products.

Critical Impact

Processing a maliciously crafted message may lead to a denial-of-service condition, potentially rendering affected Apple devices unresponsive and disrupting normal operations across iOS, macOS, tvOS, watchOS, and visionOS platforms.

Affected Products

• Apple iOS 18.1 and iPadOS 18.1 (and earlier versions)
• Apple iOS 17.7.1 and iPadOS 17.7.1 (and earlier versions)
• Apple macOS Ventura 13.7.1 (and earlier versions)
• Apple macOS Sonoma 14.7.1 (and earlier versions)
• Apple tvOS 18.1 (and earlier versions)
• Apple watchOS 11.1 (and earlier versions)
• Apple visionOS 2.1 (and earlier versions)

Discovery Timeline

• October 28, 2024 - CVE-2024-44297 published to NVD
• November 3, 2025 - Last updated in NVD database

Technical Details for CVE-2024-44297

Vulnerability Analysis

This vulnerability exists in the message processing components across Apple's operating system ecosystem. The flaw is caused by improper bounds checking when handling specially crafted messages. When a vulnerable device receives and processes a maliciously constructed message, the lack of proper boundary validation can lead to unexpected behavior that results in a denial-of-service condition.

The vulnerability can be exploited remotely over a network, requiring no authentication or special privileges from the attacker. However, user interaction is required for successful exploitation, meaning the target user must interact with the malicious message in some capacity for the attack to succeed.

Root Cause

The root cause of CVE-2024-44297 is insufficient bounds checking in the message processing routines of Apple's operating systems. When messages are received and parsed, the system failed to properly validate the boundaries of certain data elements within the message structure. This oversight allows attackers to craft messages with malformed or oversized components that exceed expected boundaries, triggering error conditions that lead to service disruption.

Attack Vector

The attack vector for this vulnerability is network-based. An attacker can exploit this flaw by sending a specially crafted message to a target device over a network connection. The exploitation scenario involves:

1. The attacker crafts a malicious message containing data that violates expected boundaries
2. The message is delivered to the target device through a network-accessible messaging interface
3. When the victim interacts with or processes the message, the insufficient bounds checking fails to catch the malformed data
4. The processing failure results in a denial-of-service condition on the affected device

The vulnerability affects all messaging-capable Apple devices running vulnerable operating system versions, representing a broad attack surface across the Apple ecosystem.

Detection Methods for CVE-2024-44297

Indicators of Compromise

• Unexpected device crashes or freezes occurring after receiving messages
• Repeated system restarts or application hangs related to messaging services
• Abnormal resource consumption patterns in message processing components
• Error logs indicating bounds check failures or memory access violations in messaging subsystems

Detection Strategies

• Monitor device logs for crash reports related to message parsing or processing functions
• Implement network traffic analysis to identify potentially malformed message payloads
• Deploy endpoint monitoring to detect unusual patterns of service interruptions across Apple devices
• Review system crash logs for patterns consistent with bounds check failures

Monitoring Recommendations

• Enable comprehensive logging on Apple devices to capture crash reports and system events
• Implement centralized log collection from iOS, macOS, tvOS, watchOS, and visionOS devices
• Configure alerts for repeated service interruptions or unexpected device reboots
• Monitor for unusual messaging activity patterns that may indicate exploitation attempts

How to Mitigate CVE-2024-44297

Immediate Actions Required

• Update all Apple devices to the latest patched versions immediately
• For iOS devices, update to iOS 18.1 or iOS 17.7.1 (or later)
• For macOS devices, update to macOS Ventura 13.7.1 or macOS Sonoma 14.7.1 (or later)
• For tvOS devices, update to tvOS 18.1 (or later)
• For watchOS devices, update to watchOS 11.1 (or later)
• For visionOS devices, update to visionOS 2.1 (or later)

Patch Information

Apple has released security updates that address CVE-2024-44297 through improved bounds checks. The patches are available through the following official Apple security advisories:

• Apple Support Article #121563 - tvOS 18.1
• Apple Support Article #121565 - iOS 18.1 and iPadOS 18.1
• Apple Support Article #121566 - iOS 17.7.1 and iPadOS 17.7.1
• Apple Support Article #121567 - macOS Ventura 13.7.1
• Apple Support Article #121568 - macOS Sonoma 14.7.1
• Apple Support Article #121569 - watchOS 11.1
• Apple Support Article #121570 - visionOS 2.1

Updates can be installed through the standard system update mechanisms: Settings > General > Software Update on iOS/iPadOS devices, System Settings > Software Update on macOS, and through the respective Watch and Apple TV apps.

Workarounds

• Exercise caution when opening messages from unknown or untrusted sources until patches can be applied
• Consider temporarily disabling or limiting messaging functionality on critical devices if updates cannot be immediately deployed
• Implement network-level filtering where possible to block potentially malicious message traffic
• Prioritize patching high-value or business-critical Apple devices first

# Verify current OS version on macOS
sw_vers

# Check for available updates on macOS (command line)
softwareupdate --list

# Install all available updates on macOS
softwareupdate --install --all