CVE-2023-38590
📋 TL;DR
This CVE-2023-38590 is a buffer overflow vulnerability in Apple operating systems that allows remote attackers to cause system crashes or corrupt kernel memory. It affects multiple Apple platforms including iOS, macOS, watchOS, and tvOS. The vulnerability can be exploited without authentication and has high impact potential.
💻 Affected Systems
- iOS
- iPadOS
- macOS
- watchOS
- tvOS
📦 What is this software?
Ipados by Apple
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 →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
Remote code execution leading to full system compromise, data theft, or persistent backdoor installation
Likely Case
System crashes (kernel panics) causing denial of service and potential data corruption
If Mitigated
Limited impact with proper network segmentation and updated systems
🎯 Exploit Status
Buffer overflow exploitation requires specific conditions but remote unauthenticated access makes it dangerous
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: watchOS 9.6, macOS Big Sur 11.7.9, iOS 15.7.8, iPadOS 15.7.8, macOS Monterey 12.6.8, tvOS 16.6, iOS 16.6, iPadOS 16.6, macOS Ventura 13.5
Vendor Advisory: https://support.apple.com/en-us/HT213841
Restart Required: Yes
Instructions:
1. Go to Settings > General > Software Update on iOS/iPadOS/watchOS/tvOS. 2. For macOS, go to System Preferences > Software Update. 3. Install available updates. 4. Restart device after installation.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Apple devices from untrusted networks
Disable Unnecessary Services
allTurn off services that accept remote connections if not needed
🧯 If You Can't Patch
- Isolate affected devices in separate network segments
- Implement strict firewall rules to limit inbound connections
🔍 How to Verify
Check if Vulnerable:
Check current OS version against affected versions listCheck Version:
iOS/iPadOS: Settings > General > About > Version. macOS: Apple menu > About This Mac > macOS version. Terminal: sw_versVerify Fix Applied:
Verify OS version matches or exceeds patched versions listed in fix_official.patch_version📡 Detection & Monitoring
Log Indicators:
- Kernel panic logs
- Unexpected system restarts
- Memory corruption errors in system logs
Network Indicators:
- Unusual network connections to Apple services
- Traffic patterns matching exploit attempts
SIEM Query:
source="apple_system_logs" AND ("kernel panic" OR "memory corruption" OR "buffer overflow")🔗 References
- https://support.apple.com/en-us/HT213841
- https://support.apple.com/en-us/HT213842
- https://support.apple.com/en-us/HT213843
- https://support.apple.com/en-us/HT213844
- https://support.apple.com/en-us/HT213845
- https://support.apple.com/en-us/HT213846
- https://support.apple.com/en-us/HT213848
- https://support.apple.com/kb/HT213841
- https://support.apple.com/kb/HT213842
- https://support.apple.com/kb/HT213843
- https://support.apple.com/kb/HT213844
- https://support.apple.com/kb/HT213845
- https://support.apple.com/kb/HT213846
- https://support.apple.com/kb/HT213848
- https://support.apple.com/en-us/HT213841
- https://support.apple.com/en-us/HT213842
- https://support.apple.com/en-us/HT213843
- https://support.apple.com/en-us/HT213844
- https://support.apple.com/en-us/HT213845
- https://support.apple.com/en-us/HT213846
- https://support.apple.com/en-us/HT213848
- https://support.apple.com/kb/HT213841
- https://support.apple.com/kb/HT213842
- https://support.apple.com/kb/HT213843
- https://support.apple.com/kb/HT213844
- https://support.apple.com/kb/HT213845
- https://support.apple.com/kb/HT213846
- https://support.apple.com/kb/HT213848
