CVE-2023-41984
📋 TL;DR
CVE-2023-41984 is a memory handling vulnerability in Apple operating systems that allows an application to execute arbitrary code with kernel privileges. This gives attackers full system control on affected devices. The vulnerability impacts macOS, iOS, iPadOS, tvOS, and watchOS users running outdated versions.
💻 Affected Systems
- macOS
- iOS
- iPadOS
- tvOS
- watchOS
📦 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 compromise with kernel-level access, allowing attackers to install persistent malware, steal all data, and control the device entirely.
Likely Case
Privilege escalation leading to data theft, surveillance capabilities, and installation of malicious software on the device.
If Mitigated
Limited impact if proper patch management and application sandboxing are enforced, though kernel vulnerabilities remain serious.
🎯 Exploit Status
Exploitation requires user to run a malicious application. No public exploit code is available in the provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Ventura 13.6, tvOS 17, iOS 16.7 and iPadOS 16.7, macOS Monterey 12.7, watchOS 10, iOS 17 and iPadOS 17, macOS Sonoma 14
Vendor Advisory: https://support.apple.com/en-us/HT213982
Restart Required: Yes
Instructions:
1. Open System Settings (macOS) or Settings (iOS/iPadOS). 2. Navigate to General > Software Update. 3. Install the latest available update. 4. Restart the device when prompted.
🔧 Temporary Workarounds
Application Restriction
allRestrict installation of applications to only those from the App Store or trusted developers
For macOS: sudo spctl --master-enable
For iOS/iPadOS: Settings > General > Device Management > Enable restrictions
🧯 If You Can't Patch
- Implement strict application control policies to prevent installation of untrusted applications
- Segment affected devices from critical network resources and monitor for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check current OS version against affected versions list. On macOS: sw_vers -productVersion. On iOS/iPadOS: Settings > General > About > Version.Check Version:
macOS: sw_vers -productVersion; iOS/iPadOS: Settings > General > About > VersionVerify Fix Applied:
Verify OS version matches or exceeds patched versions listed in fix_official.patch_version📡 Detection & Monitoring
Log Indicators:
- Unexpected kernel extensions loading
- Processes running with elevated privileges unexpectedly
- System integrity protection (SIP) violations
Network Indicators:
- Unusual outbound connections from system processes
- DNS requests to suspicious domains from kernel processes
SIEM Query:
process.parent.name:kernel AND process.name:sh OR process.name:bash OR process.name:python🔗 References
- http://seclists.org/fulldisclosure/2023/Oct/10
- http://seclists.org/fulldisclosure/2023/Oct/3
- http://seclists.org/fulldisclosure/2023/Oct/4
- http://seclists.org/fulldisclosure/2023/Oct/5
- http://seclists.org/fulldisclosure/2023/Oct/6
- http://seclists.org/fulldisclosure/2023/Oct/8
- https://support.apple.com/en-us/HT213927
- https://support.apple.com/en-us/HT213931
- https://support.apple.com/en-us/HT213932
- https://support.apple.com/en-us/HT213936
- https://support.apple.com/en-us/HT213937
- https://support.apple.com/en-us/HT213938
- https://support.apple.com/en-us/HT213940
- http://seclists.org/fulldisclosure/2023/Oct/10
- http://seclists.org/fulldisclosure/2023/Oct/3
- http://seclists.org/fulldisclosure/2023/Oct/4
- http://seclists.org/fulldisclosure/2023/Oct/5
- http://seclists.org/fulldisclosure/2023/Oct/6
- http://seclists.org/fulldisclosure/2023/Oct/8
- https://support.apple.com/en-us/HT213927
- https://support.apple.com/en-us/HT213931
- https://support.apple.com/en-us/HT213932
- https://support.apple.com/en-us/HT213936
- https://support.apple.com/en-us/HT213937
- https://support.apple.com/en-us/HT213938
- https://support.apple.com/en-us/HT213940
- https://support.apple.com/kb/HT213927
- https://support.apple.com/kb/HT213932
- https://support.apple.com/kb/HT213936
- https://support.apple.com/kb/HT213937
- https://support.apple.com/kb/HT213938
- https://support.apple.com/kb/HT213940
