CVE-2023-26415
📋 TL;DR
Adobe Substance 3D Designer versions 12.4.0 and earlier contain an out-of-bounds write vulnerability that allows attackers to execute arbitrary code when a user opens a malicious file. This affects all users running vulnerable versions of the software. Successful exploitation requires user interaction but could lead to full system compromise.
💻 Affected Systems
- Adobe Substance 3D Designer
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining the same privileges as the logged-in user, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or malware installation on the affected workstation, potentially leading to credential theft or data exfiltration.
If Mitigated
Limited impact with proper application whitelisting and user training preventing malicious file execution.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file). No public exploit code available at time of analysis.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 12.4.1 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d_designer/apsb23-28.html
Restart Required: Yes
Instructions:
1. Open Adobe Substance 3D Designer. 2. Go to Help > Check for Updates. 3. Follow prompts to install version 12.4.1 or later. 4. Restart the application after installation.
🔧 Temporary Workarounds
Restrict file opening
allConfigure application control policies to prevent opening untrusted .sbs or .sbsar files
User awareness training
allTrain users to only open Substance 3D Designer files from trusted sources
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of malicious payloads
- Use network segmentation to isolate vulnerable systems from critical assets
🔍 How to Verify
Check if Vulnerable:
Check Adobe Substance 3D Designer version in Help > About. If version is 12.4.0 or earlier, system is vulnerable.Check Version:
On Windows: Check application version in Control Panel > Programs > Programs and Features. On macOS: Check application version in Applications folder.Verify Fix Applied:
Verify version is 12.4.1 or later in Help > About. Test opening known safe Substance 3D Designer files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected child processes spawned from Substance3DDesigner.exe
Network Indicators:
- Unusual outbound connections from Substance 3D Designer process
- DNS requests to suspicious domains
SIEM Query:
process_name:"Substance3DDesigner.exe" AND (event_id:1000 OR event_id:1001) OR process_parent_name:"Substance3DDesigner.exe" AND process_name NOT IN (expected_child_processes)