CVE-2023-32380

7.8 HIGH

📋 TL;DR

This vulnerability allows attackers to execute arbitrary code on affected macOS systems by tricking users into processing a malicious 3D model file. It affects macOS Big Sur, Monterey, and Ventura users who open 3D model files from untrusted sources.

💻 Affected Systems

Products:
  • macOS
Versions: Big Sur (before 11.7.7), Monterey (before 12.6.6), Ventura (before 13.4)
Operating Systems: macOS
Default Config Vulnerable: ⚠️ Yes
Notes: Affects systems with 3D model processing capabilities enabled (default configuration).

📦 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 →

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 →

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

Full system compromise with attacker gaining root privileges and persistent access to the device.

🟠

Likely Case

Local privilege escalation or remote code execution when user opens a malicious 3D model file.

🟢

If Mitigated

No impact if systems are patched or if users avoid opening untrusted 3D files.

🌐 Internet-Facing: MEDIUM - Requires user interaction to open malicious file, but could be delivered via web downloads or email attachments.
🏢 Internal Only: MEDIUM - Could be exploited via internal file shares or collaboration tools if users open malicious files.

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: MEDIUM

Requires user interaction to open malicious 3D model file. No public exploit code known at this time.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: macOS Big Sur 11.7.7, macOS Monterey 12.6.6, macOS Ventura 13.4

Vendor Advisory: https://support.apple.com/en-us/HT213758

Restart Required: Yes

Instructions:

1. Open System Settings > General > Software Update. 2. Install available updates. 3. Restart when prompted.

🔧 Temporary Workarounds

Disable automatic 3D file opening

macos

Configure macOS to not automatically open 3D model files and require user confirmation

Restrict 3D file execution

macos

Use application allowlisting to restrict which applications can open 3D model files

🧯 If You Can't Patch

  • Implement strict file type restrictions to block 3D model files from untrusted sources
  • Educate users to never open 3D model files from unknown or untrusted sources

🔍 How to Verify

Check if Vulnerable:

Check macOS version: if running Big Sur < 11.7.7, Monterey < 12.6.6, or Ventura < 13.4, system is vulnerable.

Check Version:

sw_vers

Verify Fix Applied:

Verify macOS version is at least Big Sur 11.7.7, Monterey 12.6.6, or Ventura 13.4.

📡 Detection & Monitoring

Log Indicators:

  • Unexpected process crashes related to 3D rendering
  • Suspicious file opens of 3D model formats

Network Indicators:

  • Downloads of 3D model files from suspicious sources

SIEM Query:

process_name:*.3d OR file_extension:(.obj|.stl|.fbx) AND event_type:file_open

🔗 References

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