CVE-2023-29308
📋 TL;DR
This CVE describes an out-of-bounds write vulnerability in Adobe InDesign that could allow an attacker to execute arbitrary code on a victim's system. The vulnerability affects users running vulnerable versions of Adobe InDesign who open malicious files. Successful exploitation requires user interaction through opening a specially crafted file.
💻 Affected Systems
- Adobe InDesign
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining the same privileges as the current user, potentially leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation or malware execution within the user's context, potentially compromising sensitive documents and enabling lateral movement within the network.
If Mitigated
Limited impact with proper application sandboxing and user privilege restrictions, potentially resulting in application crash rather than code execution.
🎯 Exploit Status
Exploitation requires user to open malicious file. No public exploit code available at time of advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: ID18.4 and ID17.4.2
Vendor Advisory: https://helpx.adobe.com/security/products/indesign/apsb23-38.html
Restart Required: Yes
Instructions:
1. Open Adobe Creative Cloud application. 2. Navigate to 'Apps' section. 3. Find Adobe InDesign and click 'Update'. 4. Alternatively, download updated version from Adobe website. 5. Restart system after installation.
🔧 Temporary Workarounds
Restrict file opening
allConfigure application to only open trusted files or disable automatic opening of InDesign files
Application sandboxing
allRun InDesign in restricted environment or virtual machine
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of malicious payloads
- Use network segmentation to isolate InDesign workstations from critical systems
🔍 How to Verify
Check if Vulnerable:
Check InDesign version via Help > About InDesign. If version is ID18.3 or earlier OR ID17.4.1 or earlier, system is vulnerable.Check Version:
On Windows: Check Add/Remove Programs. On macOS: Check Applications folder > Adobe InDesign > Get Info.Verify Fix Applied:
Verify version is ID18.4 or later OR ID17.4.2 or later. Test with known safe InDesign files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Unexpected InDesign crashes
- Suspicious file opening events
- Unusual process spawning from InDesign
Network Indicators:
- Outbound connections from InDesign to unknown IPs
- DNS requests for suspicious domains after file opening
SIEM Query:
process_name:"InDesign.exe" AND (event_type:crash OR parent_process:unusual)