CVE-2024-54554
📋 TL;DR
This CVE describes a macOS vulnerability where improper symlink handling allows applications to access sensitive user data. It affects macOS systems before Sequoia 15.1. The vulnerability could enable unauthorized data access by malicious or compromised applications.
💻 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 application could access sensitive files including passwords, encryption keys, personal documents, and system configuration files, potentially leading to data theft, privilege escalation, or system compromise.
Likely Case
Compromised or malicious applications could access user data they shouldn't have permission to read, potentially exposing personal information, configuration files, or application data.
If Mitigated
With proper application sandboxing and security controls, the impact would be limited to data accessible within the application's sandbox boundaries.
🎯 Exploit Status
Exploitation requires a malicious or compromised application to be executed on the target system. The vulnerability involves symlink manipulation to bypass file access restrictions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: macOS Sequoia 15.1
Vendor Advisory: https://support.apple.com/en-us/121564
Restart Required: Yes
Instructions:
1. Open System Settings 2. Click General 3. Click Software Update 4. Install macOS Sequoia 15.1 update 5. Restart when prompted
🔧 Temporary Workarounds
Restrict application execution
allLimit execution of untrusted applications through Gatekeeper and application whitelisting
Enable full disk access restrictions
allConfigure Privacy & Security settings to restrict application access to sensitive locations
🧯 If You Can't Patch
- Implement application allowlisting to prevent execution of untrusted applications
- Use macOS Privacy & Security settings to restrict application access to sensitive file locations
🔍 How to Verify
Check if Vulnerable:
Check macOS version: if running any version before Sequoia 15.1, the system is vulnerableCheck Version:
sw_versVerify Fix Applied:
Verify macOS version is 15.1 or later and check that the update was successfully installed📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns by applications
- Symlink creation/modification in sensitive directories
- Application sandbox violations
Network Indicators:
- No network indicators - this is a local vulnerability
SIEM Query:
Search for: application accessing files outside its normal scope, symlink operations in protected directories, or Endpoint Security Framework violations