CVE-2020-9774
📋 TL;DR
This vulnerability allowed Siri Suggestions to access encrypted data without proper authorization on macOS systems. It affected macOS High Sierra, Mojave, and Catalina users. The issue was fixed through security updates that limit Siri's access to encrypted data.
💻 Affected Systems
- macOS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized access to encrypted personal or sensitive data stored on the system, potentially including passwords, financial information, or private documents.
Likely Case
Siri Suggestions could access encrypted data that should have been protected, potentially exposing user privacy information.
If Mitigated
With proper patching, Siri's access to encrypted data is properly restricted according to user permissions.
🎯 Exploit Status
Exploitation requires local access to the system and knowledge of how to trigger Siri Suggestions access to encrypted data.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Catalina 10.15.3, Security Update 2020-001 Mojave, Security Update 2020-001 High Sierra
Vendor Advisory: https://support.apple.com/en-us/HT210919
Restart Required: Yes
Instructions:
1. Open System Preferences > Software Update. 2. Install available security updates. 3. Restart the system when prompted.
🔧 Temporary Workarounds
Disable Siri Suggestions
macosTemporarily disable Siri Suggestions to prevent potential data access
System Preferences > Siri > Uncheck 'Enable Siri Suggestions'
🧯 If You Can't Patch
- Disable Siri entirely through System Preferences > Siri
- Ensure FileVault encryption is enabled and use strong passwords
🔍 How to Verify
Check if Vulnerable:
Check macOS version: Apple menu > About This Mac. If version is High Sierra, Mojave, or Catalina before 10.15.3, system is vulnerable.Check Version:
sw_versVerify Fix Applied:
Verify macOS version is 10.15.3 or later for Catalina, or that Security Update 2020-001 is installed for Mojave/High Sierra.📡 Detection & Monitoring
Log Indicators:
- Unusual Siri access patterns to encrypted files
- File access logs showing Siri processes accessing encrypted data
Network Indicators:
- Not applicable - local vulnerability
SIEM Query:
Not applicable for this local macOS vulnerability