CVE-2020-9639
📋 TL;DR
This memory corruption vulnerability in Adobe Illustrator allows attackers to execute arbitrary code on affected systems. Users running Illustrator versions 24.1.2 or earlier are vulnerable. Exploitation typically requires user interaction, such as opening a malicious file.
💻 Affected Systems
- Adobe Illustrator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control of the affected machine, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation or arbitrary code execution in the context of the current user, allowing file system access, credential theft, and persistence mechanisms.
If Mitigated
Limited impact due to application sandboxing, network segmentation, and user privilege restrictions preventing system-wide compromise.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file). No public exploit code has been disclosed as of the advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 24.1.3 and later
Vendor Advisory: https://helpx.adobe.com/security/products/illustrator/apsb20-37.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application
2. Navigate to the 'Apps' section
3. Find Adobe Illustrator in your installed applications
4. Click 'Update' if available
5. Alternatively, download the latest version from Adobe's website
6. Install the update and restart your computer
🔧 Temporary Workarounds
Restrict file opening
allPrevent opening untrusted Illustrator files by implementing application control policies
Network segmentation
allIsolate Illustrator workstations from critical network segments
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of malicious payloads
- Use endpoint detection and response (EDR) solutions to monitor for suspicious Illustrator process behavior
🔍 How to Verify
Check if Vulnerable:
Check Illustrator version via Help > About Illustrator. If version is 24.1.2 or earlier, the system is vulnerable.Check Version:
On Windows: Check Illustrator.exe properties > Details tab. On macOS: Right-click Illustrator app > Get Info.Verify Fix Applied:
Verify Illustrator version is 24.1.3 or later after applying the update.📡 Detection & Monitoring
Log Indicators:
- Unusual Illustrator process crashes
- Suspicious child processes spawned from Illustrator
- Multiple failed file opening attempts
Network Indicators:
- Outbound connections from Illustrator to unknown IPs
- DNS requests for suspicious domains following Illustrator execution
SIEM Query:
process_name:"Illustrator.exe" AND (event_type:"process_creation" OR event_type:"crash")