CVE-2020-29614
📋 TL;DR
CVE-2020-29614 is a heap corruption vulnerability in Apple operating systems that allows attackers to execute arbitrary code by tricking users into opening maliciously crafted files. This affects macOS, iOS, iPadOS, and tvOS users running vulnerable versions. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- macOS
- iOS
- iPadOS
- 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 →Tvos by Apple
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with kernel-level code execution, allowing attackers to install persistent malware, steal sensitive data, or create backdoors.
Likely Case
Arbitrary code execution in the context of the user opening the malicious file, potentially leading to data theft, ransomware deployment, or lateral movement.
If Mitigated
Limited impact if systems are fully patched, with potential file corruption or application crashes if exploitation attempts occur.
🎯 Exploit Status
Exploitation requires user interaction to open malicious files. No public exploit code has been disclosed, but heap corruption vulnerabilities are often weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, iOS 14.3, iPadOS 14.3, tvOS 14.3
Vendor Advisory: https://support.apple.com/en-us/HT212003
Restart Required: Yes
Instructions:
1. Open System Preferences > Software Update. 2. Install all available updates. 3. Restart the system when prompted. For iOS/iPadOS: Settings > General > Software Update. For tvOS: Settings > System > Software Updates.
🔧 Temporary Workarounds
File Type Restrictions
allRestrict opening of untrusted file types using application whitelisting or file extension blocking.
User Education
allTrain users to avoid opening files from untrusted sources and to verify file integrity before opening.
🧯 If You Can't Patch
- Implement application control solutions to restrict execution of untrusted applications
- Deploy endpoint detection and response (EDR) solutions to detect exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check system 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: Check in Settings > General > About > Version.Verify Fix Applied:
Verify system version matches or exceeds patched versions listed in the fix section.📡 Detection & Monitoring
Log Indicators:
- Application crashes related to file processing
- Unexpected process creation after file opening
- Memory access violation logs
Network Indicators:
- Downloads of suspicious file types from untrusted sources
- Outbound connections from applications after file processing
SIEM Query:
source="apple_system_logs" AND (event="crash" OR event="memory_violation") AND process="*file_processor*"🔗 References
- https://support.apple.com/en-us/HT212003
- https://support.apple.com/en-us/HT212005
- https://support.apple.com/en-us/HT212011
- https://support.apple.com/en-us/HT212147
- https://support.apple.com/en-us/HT212003
- https://support.apple.com/en-us/HT212005
- https://support.apple.com/en-us/HT212011
- https://support.apple.com/en-us/HT212147
