CVE-2024-44176
📋 TL;DR
This vulnerability involves an out-of-bounds access issue in Apple's image processing components that could cause denial-of-service. Attackers could exploit this by tricking users into processing malicious images, potentially crashing affected applications or systems. It affects multiple Apple operating systems including macOS, iOS, iPadOS, visionOS, watchOS, and tvOS.
💻 Affected Systems
- macOS
- iOS
- iPadOS
- visionOS
- watchOS
- tvOS
📦 What is this software?
Ipados by Apple
Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Macos by Apple
macOS is Apple's desktop and laptop operating system powering Mac computers used by millions of professionals, developers, creative professionals, and enterprise users worldwide. Built on a Unix foundation with the Darwin kernel and modern Cocoa frameworks, macOS delivers a seamless ecosystem integr...
Learn more about Macos →Tvos by Apple
Watchos by Apple
⚠️ Risk & Real-World Impact
Worst Case
Complete system crash or application termination requiring reboot, potentially disrupting critical services or user workflows.
Likely Case
Application crash when processing specially crafted images, causing temporary denial-of-service for affected applications.
If Mitigated
No impact if systems are patched or if image processing is restricted to trusted sources.
🎯 Exploit Status
Exploitation requires user interaction to process malicious images, but no authentication is needed once the image is processed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Ventura 13.7, iOS 17.7, iPadOS 17.7, visionOS 2, watchOS 11, macOS Sequoia 15, iOS 18, iPadOS 18, macOS Sonoma 14.7, tvOS 18
Vendor Advisory: https://support.apple.com/en-us/121234
Restart Required: Yes
Instructions:
1. Open Settings/System Preferences 2. Navigate to Software Update 3. Install available updates 4. Restart device when prompted
🔧 Temporary Workarounds
Restrict image processing sources
allConfigure applications to only process images from trusted sources and block untrusted image uploads.
Disable automatic image processing
allConfigure email clients, browsers, and applications to not automatically process or preview images.
🧯 If You Can't Patch
- Implement network filtering to block suspicious image files at perimeter
- Monitor for application crashes related to image processing and investigate anomalies
🔍 How to Verify
Check if Vulnerable:
Check current OS version against affected versions list in System Settings/AboutCheck Version:
On macOS: sw_vers -productVersion; On iOS/iPadOS: Settings > General > About > VersionVerify Fix Applied:
Verify OS version matches or exceeds patched versions listed in Apple advisory📡 Detection & Monitoring
Log Indicators:
- Application crashes during image processing
- Kernel panics or system reboots after image handling
Network Indicators:
- Unusual image file uploads to web applications
- Spikes in image processing requests
SIEM Query:
source="application_logs" AND (event="crash" OR event="termination") AND process="*image*" OR message="*out of bounds*"🔗 References
- https://support.apple.com/en-us/121234
- https://support.apple.com/en-us/121238
- https://support.apple.com/en-us/121240
- https://support.apple.com/en-us/121246
- https://support.apple.com/en-us/121247
- https://support.apple.com/en-us/121248
- https://support.apple.com/en-us/121249
- https://support.apple.com/en-us/121250
- http://seclists.org/fulldisclosure/2024/Sep/32
- http://seclists.org/fulldisclosure/2024/Sep/33
- http://seclists.org/fulldisclosure/2024/Sep/36
- http://seclists.org/fulldisclosure/2024/Sep/40
- http://seclists.org/fulldisclosure/2024/Sep/41
