CVE-2020-24409
📋 TL;DR
CVE-2020-24409 is an out-of-bounds read vulnerability in Adobe Illustrator that could allow arbitrary code execution when a user opens a malicious PDF file. This affects Adobe Illustrator version 24.2 and earlier on all supported platforms. Attackers could exploit this to run code with the privileges of the current user.
💻 Affected Systems
- Adobe Illustrator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via arbitrary code execution leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Application crash or limited information disclosure from memory reads, with potential for code execution if combined with other vulnerabilities.
If Mitigated
Application crash with no data loss if proper sandboxing and memory protections are enabled.
🎯 Exploit Status
Exploitation requires user interaction (opening malicious PDF). No public exploit code available at disclosure time.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 24.2.1 or later
Vendor Advisory: https://helpx.adobe.com/security/products/illustrator/apsb20-53.html
Restart Required: Yes
Instructions:
1. Open Adobe Illustrator. 2. Go to Help > Updates. 3. Install available updates to version 24.2.1 or later. 4. Restart Illustrator after installation.
🔧 Temporary Workarounds
Disable PDF file opening
allPrevent Illustrator from opening PDF files by default
Use alternative PDF viewers
windowsConfigure system to open PDF files with Adobe Reader or other secure PDF viewers instead of Illustrator
🧯 If You Can't Patch
- Restrict user permissions to limit impact of potential code execution
- 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 24.2 or earlier, system is vulnerable.Check Version:
On Windows: wmic product where name="Adobe Illustrator" get version
On macOS: /Applications/Adobe\ Illustrator\ 2020/Adobe\ Illustrator.app/Contents/MacOS/Illustrator --versionVerify Fix Applied:
Verify version is 24.2.1 or later in Help > About Illustrator.📡 Detection & Monitoring
Log Indicators:
- Application crashes when opening PDF files
- Unexpected memory access errors in application logs
Network Indicators:
- PDF file downloads from untrusted sources
- Email attachments with PDF files
SIEM Query:
source="*illustrator*" AND (event_type="crash" OR error="memory" OR error="out of bounds")