CVE-2020-9727
📋 TL;DR
This memory corruption vulnerability in Adobe InDesign allows attackers to execute arbitrary code by tricking users into opening malicious .indd files. It affects all users running vulnerable versions of InDesign, potentially leading to full system compromise.
💻 Affected Systems
- Adobe InDesign
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover with the same privileges as the current user, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation leading to data exfiltration, credential harvesting, or lateral movement within the network.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially only causing application crashes.
🎯 Exploit Status
Exploitation requires user interaction to open malicious files. No public exploit code is known, but memory corruption vulnerabilities are often weaponized.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 15.1.2 or later
Vendor Advisory: https://helpx.adobe.com/security/products/indesign/apsb20-52.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to 'Apps' tab. 3. Find InDesign and click 'Update'. 4. Alternatively, download the update directly from Adobe's website. 5. Restart InDesign after installation.
🔧 Temporary Workarounds
Restrict .indd file handling
allConfigure system to open .indd files only with patched versions or alternative applications
User education and file validation
allTrain users to only open .indd files from trusted sources and implement file validation procedures
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized InDesign versions
- Deploy endpoint protection with memory corruption detection capabilities
🔍 How to Verify
Check if Vulnerable:
Check InDesign version via Help > About InDesign. If version is 15.1.1 or earlier, system is vulnerable.Check Version:
On Windows: wmic product where name="Adobe InDesign" get version
On macOS: /Applications/Adobe\ InDesign\ */Adobe\ InDesign.app/Contents/MacOS/Adobe\ InDesign -vVerify Fix Applied:
Verify version is 15.1.2 or later in Help > About InDesign menu.📡 Detection & Monitoring
Log Indicators:
- Unexpected InDesign crashes
- Unusual file access patterns for .indd files
- Process creation from InDesign with suspicious parameters
Network Indicators:
- Outbound connections from InDesign process to unknown IPs
- DNS queries for suspicious domains following .indd file opening
SIEM Query:
process_name:"InDesign.exe" AND (event_type:"process_creation" OR event_type:"crash")