CVE-2024-40831
📋 TL;DR
This CVE describes a permissions vulnerability in macOS that allows unauthorized applications to access a user's Photos Library. The issue affects macOS systems before Sequoia 15, potentially exposing personal photos to malicious apps without proper user consent.
💻 Affected Systems
- macOS
📦 What is this software?
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 →⚠️ Risk & Real-World Impact
Worst Case
Malicious app gains full access to user's entire Photos Library, potentially exfiltrating sensitive personal images including private photos, location data, and personal information embedded in metadata.
Likely Case
Malicious app accesses portions of the Photos Library to gather personal information for targeted advertising, social engineering, or identity theft purposes.
If Mitigated
App Store review process catches malicious apps before distribution, and users only install trusted applications from verified sources.
🎯 Exploit Status
Exploitation requires convincing user to install and run a malicious application. No public exploit code has been disclosed as of the advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Sequoia 15
Vendor Advisory: https://support.apple.com/en-us/121238
Restart Required: Yes
Instructions:
1. Open System Settings > General > Software Update. 2. Click 'Update Now' if macOS Sequoia 15 is available. 3. Follow on-screen instructions to complete installation. 4. Restart your Mac when prompted.
🔧 Temporary Workarounds
Restrict App Permissions
allReview and restrict Photos access permissions for all installed applications
Open System Settings > Privacy & Security > Photos
Review app list and toggle off access for untrusted applications
Application Whitelisting
allOnly allow trusted applications to run on the system
Open System Settings > Privacy & Security > Security
Set 'Allow apps downloaded from' to 'App Store' or 'App Store and identified developers'
🧯 If You Can't Patch
- Implement strict application control policies to prevent installation of untrusted applications
- Regularly audit installed applications and remove any that are unnecessary or untrusted
🔍 How to Verify
Check if Vulnerable:
Check macOS version: If version is earlier than 15.0, system is vulnerableCheck Version:
sw_versVerify Fix Applied:
Verify macOS version is 15.0 or later and check that Photos permissions are properly restricted in System Settings📡 Detection & Monitoring
Log Indicators:
- Unusual Photos Library access attempts by non-Photos applications
- Applications requesting Photos permissions unexpectedly
Network Indicators:
- Unexpected outbound connections from applications that shouldn't access photos
SIEM Query:
process_name:("Photos" OR "photoanalysisd") AND event_type:"permission_request" AND result:"granted" AND NOT user:"current_user"