CVE-2016-7886
📋 TL;DR
This vulnerability allows attackers to execute arbitrary code on affected Adobe InDesign systems through memory corruption. It affects Adobe InDesign versions 11.4.1 and earlier, and Adobe InDesign Server 11.0.0 and earlier. Successful exploitation could give attackers full control of the compromised system.
💻 Affected Systems
- Adobe InDesign
- Adobe InDesign Server
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining administrative privileges, data theft, ransomware deployment, and lateral movement within the network.
Likely Case
Local privilege escalation leading to data exfiltration, installation of persistent malware, or use as an initial access vector for targeted attacks.
If Mitigated
Limited impact with proper network segmentation, application whitelisting, and least privilege principles preventing successful exploitation.
🎯 Exploit Status
Memory corruption vulnerabilities in document processing software are frequently exploited via malicious files. Attack complexity is low once a malicious file is crafted.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: InDesign 11.4.2 or later, InDesign Server 11.0.1 or later
Vendor Advisory: https://helpx.adobe.com/security/products/indesign/apsb16-43.html
Restart Required: Yes
Instructions:
1. Open Adobe InDesign/InDesign Server. 2. Go to Help > Updates. 3. Install all available updates. 4. Restart the application. 5. Verify version is 11.4.2 or later for InDesign, or 11.0.1 or later for InDesign Server.
🔧 Temporary Workarounds
Application Control/Whitelisting
allRestrict execution of Adobe InDesign to trusted users and systems only
Network Segmentation
allIsolate InDesign systems from critical network segments
🧯 If You Can't Patch
- Implement strict file validation policies to block untrusted InDesign documents
- Deploy endpoint detection and response (EDR) solutions to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check Adobe InDesign version via Help > About InDesign. If version is 11.4.1 or earlier, or InDesign Server 11.0.0 or earlier, system is vulnerable.Check Version:
On Windows: wmic product where "name like 'Adobe InDesign%'" get version. On macOS: /Applications/Adobe\ InDesign\ CC\ 2015/Adobe\ InDesign\ CC\ 2015.app/Contents/MacOS/Adobe\ InDesign\ CC\ 2015 -vVerify Fix Applied:
Verify version is 11.4.2 or later for InDesign, or 11.0.1 or later for InDesign Server. Check that no security updates are pending in Adobe Updater.📡 Detection & Monitoring
Log Indicators:
- Unexpected InDesign crashes
- Suspicious child processes spawned from InDesign
- Unusual file access patterns from InDesign process
Network Indicators:
- Outbound connections from InDesign to unknown IPs
- DNS requests for suspicious domains from InDesign host
SIEM Query:
process_name:"indesign.exe" AND (event_id:1 OR parent_process_name NOT IN ("explorer.exe", "adobeupdater.exe"))