CVE-2023-25871
📋 TL;DR
CVE-2023-25871 is a use-after-free vulnerability in Adobe Substance 3D Stager that could allow arbitrary code execution when a user opens a malicious file. This affects users of Substance 3D Stager versions 2.0.0 and earlier, requiring user interaction through file opening to trigger exploitation.
💻 Affected Systems
- Adobe Substance 3D Stager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation leading to data exfiltration or malware installation on the affected workstation.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially resulting in application crash only.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and knowledge of memory corruption techniques. No public exploits confirmed as of advisory publication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.1 and later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d_stager/apsb23-22.html
Restart Required: Yes
Instructions:
1. Open Adobe Substance 3D Stager. 2. Navigate to Help > Check for Updates. 3. Follow prompts to install version 2.0.1 or later. 4. Restart the application after installation completes.
🔧 Temporary Workarounds
Restrict file opening
allPrevent users from opening untrusted Substance 3D Stager files
Application sandboxing
allRun Substance 3D Stager in restricted execution environment
🧯 If You Can't Patch
- Implement application control policies to restrict execution of Substance 3D Stager to trusted users only
- Deploy endpoint detection and response (EDR) solutions to monitor for suspicious file opening behavior
🔍 How to Verify
Check if Vulnerable:
Check Adobe Substance 3D Stager version via Help > About. If version is 2.0.0 or earlier, system is vulnerable.Check Version:
Not applicable - use GUI Help > About menu in applicationVerify Fix Applied:
Verify version is 2.0.1 or later via Help > About menu.📡 Detection & Monitoring
Log Indicators:
- Application crash logs from Substance 3D Stager
- Unexpected process creation from Substance 3D Stager
Network Indicators:
- Outbound connections from Substance 3D Stager to unexpected destinations
SIEM Query:
process_name:"Substance 3D Stager.exe" AND (event_type:crash OR parent_process:unexpected)