CVE-2024-41857
📋 TL;DR
Adobe Illustrator versions 28.6, 27.9.5 and earlier contain an integer underflow vulnerability that could allow arbitrary code execution when a user opens a malicious file. This affects all users running vulnerable versions of Illustrator on any supported operating system.
💻 Affected Systems
- Adobe Illustrator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise through arbitrary code execution with current user privileges, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Malicious actor gains control of the affected workstation through a crafted Illustrator file, enabling data exfiltration or credential harvesting.
If Mitigated
Limited impact due to user awareness training preventing malicious file opening, or application sandboxing containing the exploit.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious file) and knowledge of file format manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to Illustrator 28.7 or later, or 27.9.6 or later
Vendor Advisory: https://helpx.adobe.com/security/products/illustrator/apsb24-66.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to 'Apps' tab. 3. Find Illustrator and click 'Update'. 4. Restart Illustrator after update completes.
🔧 Temporary Workarounds
Disable Illustrator file opening
windowsTemporarily block Illustrator from opening files via group policy or application control
Use file type restrictions
allBlock .ai and other Illustrator file types at email gateway and web proxy
🧯 If You Can't Patch
- Implement application whitelisting to prevent unauthorized Illustrator execution
- Educate users to never open Illustrator files from untrusted sources
🔍 How to Verify
Check if Vulnerable:
Check Illustrator version via Help > About Illustrator. If version is 28.6 or earlier, or 27.9.5 or earlier, system is vulnerable.Check Version:
On Windows: Check Illustrator.exe properties > Details tab. On macOS: Open Illustrator > Illustrator menu > About Illustrator.Verify Fix Applied:
Verify Illustrator version is 28.7 or later, or 27.9.6 or later after update.📡 Detection & Monitoring
Log Indicators:
- Illustrator crash logs with memory access violations
- Unexpected Illustrator process spawning child processes
Network Indicators:
- Outbound connections from Illustrator process to unknown IPs
- DNS queries for suspicious domains from Illustrator
SIEM Query:
process_name:"Illustrator.exe" AND (event_id:1000 OR event_id:1001) OR process_parent_name:"Illustrator.exe"