CVE-2020-9571
📋 TL;DR
Adobe Illustrator versions 24.0.2 and earlier contain a memory corruption vulnerability that could allow attackers to execute arbitrary code on affected systems. This affects users running vulnerable versions of Adobe Illustrator on any supported operating system. Successful exploitation 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 attackers to steal sensitive files, install malware, or pivot to other systems.
If Mitigated
Limited impact with proper application sandboxing, least privilege principles, and network segmentation preventing lateral movement.
🎯 Exploit Status
Exploitation requires user interaction (opening a malicious file). No public exploit code was available at the time of the advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 24.1 and later
Vendor Advisory: https://helpx.adobe.com/security/products/illustrator/apsb20-20.html
Restart Required: Yes
Instructions:
1. Open Adobe Illustrator. 2. Go to Help > Updates. 3. Follow prompts to update to version 24.1 or later. 4. Restart Illustrator after update completes.
🔧 Temporary Workarounds
Disable Illustrator file associations
allPrevent automatic opening of Illustrator files by changing default file associations
Windows: Control Panel > Default Programs > Associate a file type or protocol with a program
macOS: Right-click .ai file > Get Info > Open With > Change All
Application sandboxing
allRun Illustrator in a sandboxed environment to limit potential damage
Windows: Use Windows Sandbox or third-party sandbox tools
macOS: Use built-in sandboxing features or third-party solutions
🧯 If You Can't Patch
- Restrict user permissions to run Illustrator with least privilege principles
- Implement application whitelisting to prevent execution of unauthorized code
🔍 How to Verify
Check if Vulnerable:
Check Illustrator version: Open Illustrator > Help > About Illustrator. If version is 24.0.2 or earlier, system is vulnerable.Check Version:
Illustrator: Help > About Illustrator (GUI only, no CLI command)Verify Fix Applied:
Verify version is 24.1 or later in Help > About Illustrator. Check that updates are enabled in Help > Updates.📡 Detection & Monitoring
Log Indicators:
- Unexpected Illustrator crashes
- Suspicious file opens in Illustrator
- Unusual process spawning from Illustrator
Network Indicators:
- Outbound connections from Illustrator to unknown IPs
- DNS requests for suspicious domains from Illustrator process
SIEM Query:
process_name:"Illustrator.exe" AND (event_type:crash OR parent_process:!"explorer.exe")