CVE-2024-20750
📋 TL;DR
CVE-2024-20750 is an out-of-bounds read vulnerability in Substance3D Designer that could allow arbitrary code execution when a user opens a malicious file. Attackers can exploit this to run code with the victim's privileges. Users of Substance3D Designer versions 13.1.0 and earlier are affected.
💻 Affected Systems
- Adobe Substance3D Designer
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining the same privileges as the logged-in user, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive files and system resources within the user's permission scope.
If Mitigated
Application crash or denial of service without code execution if memory protections are enabled.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and bypassing memory protections.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 13.1.1 or later
Vendor Advisory: https://helpx.adobe.com/security/products/substance3d_designer/apsb24-13.html
Restart Required: Yes
Instructions:
1. Open Substance3D Designer. 2. Go to Help > Check for Updates. 3. Install available updates. 4. Restart the application.
🔧 Temporary Workarounds
Restrict file handling
allConfigure application to only open trusted files from verified sources.
User awareness training
allEducate users to avoid opening untrusted .sbs or .sbsar files.
🧯 If You Can't Patch
- Implement application whitelisting to block execution of vulnerable versions.
- Use endpoint protection with memory corruption detection capabilities.
🔍 How to Verify
Check if Vulnerable:
Check Substance3D Designer version in Help > About. If version is 13.1.0 or earlier, system is vulnerable.Check Version:
Not applicable - check via application GUI.Verify Fix Applied:
Verify version is 13.1.1 or later in Help > About.📡 Detection & Monitoring
Log Indicators:
- Application crashes with memory access violations
- Unexpected file parsing errors
Network Indicators:
- Unusual outbound connections after file opening
SIEM Query:
EventID=1000 OR EventID=1001 AND ProcessName="Substance3D Designer.exe" AND ExceptionCode=0xC0000005