CVE-2023-48629
📋 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. The attacker gains the same privileges as the current user.
💻 Affected Systems
- Adobe Substance 3D Sampler
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the user's system and potentially pivoting to other systems.
Likely Case
Local privilege escalation leading to data theft, ransomware deployment, or persistence mechanisms installation.
If Mitigated
Limited impact if user runs with minimal privileges and doesn't open untrusted files.
🎯 Exploit Status
Requires user interaction (opening malicious file) and knowledge of file format exploitation.
🛠️ 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 3D files.
Run with limited privileges
allRun Adobe Substance 3D Sampler with standard user privileges instead of administrator rights.
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of malicious payloads
- Use endpoint detection and response (EDR) to monitor for suspicious process creation
🔍 How to Verify
Check if Vulnerable:
Check Adobe Substance 3D Sampler version in Help > About. If version is 4.2.1 or earlier, you are vulnerable.Check Version:
Not applicable - check via application GUIVerify Fix Applied:
Verify version is 4.2.2 or later in Help > About.📡 Detection & Monitoring
Log Indicators:
- Unexpected process creation from Adobe Substance 3D Sampler
- File access to suspicious locations
Network Indicators:
- Outbound connections from Adobe Substance 3D Sampler to unknown IPs
SIEM Query:
process_name:"Adobe Substance 3D Sampler.exe" AND (process_parent:explorer.exe OR network_connection:*)