CVE-2023-48627
📋 TL;DR
Adobe Substance 3D Sampler versions 4.2.1 and earlier contain an out-of-bounds write vulnerability that allows arbitrary code execution when a user opens a malicious file. This affects users of Adobe Substance 3D Sampler who open untrusted files, potentially leading to full system compromise.
💻 Affected Systems
- Adobe Substance 3D Sampler
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with attacker gaining the same privileges as the current user, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Malware installation or credential theft when users open malicious files from untrusted sources, particularly in creative workflows where file sharing is common.
If Mitigated
Limited impact with proper user training and file validation, potentially only crashing the application without code execution.
🎯 Exploit Status
Requires user interaction (opening malicious file) and likely requires file format manipulation expertise.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.2.2 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d-sampler/apsb23-74.html
Restart Required: Yes
Instructions:
1. Open Adobe Substance 3D Sampler. 2. Go to Help > Check for Updates. 3. Install available updates. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file opening
allOnly open files from trusted sources and avoid opening unknown .sbsar or other Substance file formats.
Application sandboxing
allRun Adobe Substance 3D Sampler in a sandboxed environment to limit potential damage from exploitation.
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized code
- Use endpoint detection and response (EDR) tools to monitor for suspicious process creation
🔍 How to Verify
Check if Vulnerable:
Check Adobe Substance 3D Sampler version in application settings or About dialog.Check Version:
Open Adobe Substance 3D Sampler and navigate to Help > About Substance 3D SamplerVerify Fix Applied:
Verify version is 4.2.2 or later after updating.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected child processes spawned from Substance 3D Sampler
Network Indicators:
- Unusual outbound connections from Substance 3D Sampler process
SIEM Query:
process_name:"Substance 3D Sampler.exe" AND (event_id:1000 OR parent_process_name:"Substance 3D Sampler.exe")