CVE-2024-40840
📋 TL;DR
This vulnerability allows an attacker with physical access to an iOS/iPadOS device to use Siri to access sensitive user data that should be protected. It affects Apple devices running iOS/iPadOS versions before 18. The issue was resolved through improved state management in the operating system.
💻 Affected Systems
- iPhone
- iPad
📦 What is this software?
Ipados by Apple
⚠️ Risk & Real-World Impact
Worst Case
An attacker with brief physical access could use Siri to extract sensitive personal data, photos, messages, or other protected information without authentication.
Likely Case
Someone with temporary physical access (like a thief or unauthorized person) could use Siri voice commands to access some protected data they shouldn't be able to see.
If Mitigated
With proper physical security controls and updated software, the risk is minimal as the attacker needs physical access and the vulnerability is patched.
🎯 Exploit Status
Exploitation requires physical access to the device and knowledge of how to trigger the vulnerability through Siri. No authentication bypass needed once physical access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: iOS 18, iPadOS 18
Vendor Advisory: https://support.apple.com/en-us/121250
Restart Required: Yes
Instructions:
1. Go to Settings > General > Software Update. 2. Download and install iOS 18/iPadOS 18 update. 3. Restart device when prompted.
🔧 Temporary Workarounds
Disable Siri
allTemporarily disable Siri to prevent exploitation while awaiting patch
Enable Lock Screen Restrictions
allRestrict what Siri can access from the lock screen
🧯 If You Can't Patch
- Implement strict physical security controls for devices
- Disable Siri completely or restrict lock screen access
🔍 How to Verify
Check if Vulnerable:
Check iOS/iPadOS version in Settings > General > About > Software Version. If version is below 18, device is vulnerable.Check Version:
Not applicable - check via device settings UIVerify Fix Applied:
Verify iOS/iPadOS version is 18 or higher in Settings > General > About > Software Version.📡 Detection & Monitoring
Log Indicators:
- Unusual Siri activity patterns, multiple failed authentication attempts followed by Siri usage
Network Indicators:
- Not applicable - local physical access vulnerability
SIEM Query:
Not applicable - physical access attack leaves minimal digital traces