CVE-2023-29273
📋 TL;DR
Adobe Substance 3D Painter versions 8.3.0 and earlier contain an out-of-bounds read vulnerability when parsing malicious files. This could allow attackers to execute arbitrary code with the privileges of the current user. Users who open untrusted files with vulnerable versions are affected.
💻 Affected Systems
- Adobe Substance 3D Painter
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through remote code execution, allowing attackers to install malware, steal data, or pivot to other systems.
Likely Case
Local privilege escalation leading to data theft, ransomware deployment, or persistence mechanisms installation.
If Mitigated
Application crash or denial of service if memory protections prevent code execution.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and bypassing memory protections.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.3.1 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d_painter/apsb23-29.html
Restart Required: Yes
Instructions:
1. Open Adobe Substance 3D Painter. 2. Go to Help > Check for Updates. 3. Install version 8.3.1 or later. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file opening
allOnly open files from trusted sources and disable automatic file opening features.
Application sandboxing
allRun Substance 3D Painter in a sandboxed environment to limit potential damage.
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of malicious payloads
- Use endpoint detection and response (EDR) to monitor for suspicious file parsing behavior
🔍 How to Verify
Check if Vulnerable:
Check Help > About in Substance 3D Painter - if version is 8.3.0 or earlier, you are vulnerable.Check Version:
On Windows: Check application properties or registry. On macOS: Check app info. On Linux: Check package version.Verify Fix Applied:
Verify version is 8.3.1 or later in Help > About and test opening known safe files.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected file parsing errors
Network Indicators:
- Unusual outbound connections after file opening
- File downloads from untrusted sources
SIEM Query:
Process:substance3dpainter.exe AND (EventID:1000 OR EventID:1001) OR FileHash matches known malicious hashes