CVE-2023-26394
📋 TL;DR
Adobe Substance 3D Stager versions 2.0.1 and earlier contain a heap-based buffer overflow vulnerability that could allow attackers to execute arbitrary code with the privileges of the current user. This affects users who open malicious files with the vulnerable software. The vulnerability requires user interaction through opening a malicious file.
💻 Affected Systems
- Adobe Substance 3D Stager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the user's system, data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation leading to data exfiltration, malware installation, or persistence mechanisms being established on the compromised system.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially resulting in application crash rather than code execution.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and heap manipulation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.2 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d_stager/apsb23-26.html
Restart Required: Yes
Instructions:
1. Open Adobe Substance 3D Stager
2. Navigate to Help > Check for Updates
3. Follow prompts to install version 2.0.2 or later
4. Restart the application
🔧 Temporary Workarounds
Restrict File Opening
allOnly open files from trusted sources and implement file type restrictions
Application Sandboxing
allRun Adobe Substance 3D Stager in a sandboxed environment to limit potential damage
🧯 If You Can't Patch
- Remove Adobe Substance 3D Stager from critical systems
- Implement application whitelisting to prevent execution of vulnerable versions
🔍 How to Verify
Check if Vulnerable:
Check version in Adobe Substance 3D Stager under Help > AboutCheck Version:
Not applicable - check through application GUIVerify Fix Applied:
Verify version is 2.0.2 or later in Help > About📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected file processing events
- Suspicious child processes spawned from Adobe Substance 3D Stager
Network Indicators:
- Outbound connections from Adobe Substance 3D Stager to unexpected destinations
- DNS requests for suspicious domains following file opening
SIEM Query:
process_name:"Adobe Substance 3D Stager.exe" AND (event_id:1000 OR event_id:1001) OR parent_process:"Adobe Substance 3D Stager.exe" AND process_creation