CVE-2023-25863
📋 TL;DR
Adobe Substance 3D Stager has an out-of-bounds read vulnerability when parsing malicious files, which could allow attackers to execute arbitrary code as the current user. This affects users who open crafted files in versions 2.0.0 and earlier. Exploitation requires user interaction through opening a malicious file.
💻 Affected Systems
- Adobe Substance 3D Stager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker executing arbitrary code in the context of the logged-in user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Application crash or limited information disclosure due to memory read errors, though code execution is possible with sophisticated exploitation.
If Mitigated
No impact if users don't open untrusted files or if application is patched.
🎯 Exploit Status
Exploitation requires user to open malicious file. Memory corruption vulnerabilities can be challenging to weaponize reliably.
🛠️ 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. Go to Help > Check for Updates. 3. Install version 2.0.1 or later. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file opening
allOnly open files from trusted sources and avoid opening unknown .stager files
Application control
allUse application whitelisting to restrict execution of Adobe Substance 3D Stager to trusted users
🧯 If You Can't Patch
- Implement strict user training about opening only trusted files
- Use endpoint protection with memory protection features enabled
🔍 How to Verify
Check if Vulnerable:
Check Help > About in Adobe Substance 3D Stager. If version is 2.0.0 or earlier, you are vulnerable.Check Version:
Not applicable - check via application GUIVerify Fix Applied:
Verify version is 2.0.1 or later in Help > About.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected file parsing errors
Network Indicators:
- File downloads of .stager files from untrusted sources
SIEM Query:
EventID=1000 OR EventID=1001 with Adobe Substance 3D Stager in source