CVE-2021-40715
📋 TL;DR
This vulnerability allows attackers to execute arbitrary code on systems running vulnerable versions of Adobe Premiere Pro by tricking users into opening malicious .exr image files. The vulnerability affects Adobe Premiere Pro 15.4 and earlier versions, putting video editors and production teams at risk.
💻 Affected Systems
- Adobe Premiere Pro
📦 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 lateral movement within the network.
Likely Case
Local privilege escalation leading to data exfiltration, installation of persistent malware, or system disruption affecting video production workflows.
If Mitigated
Limited impact with proper user training and file validation controls, potentially resulting only in application crashes without code execution.
🎯 Exploit Status
Exploitation requires user interaction to open a malicious .exr file. No public proof-of-concept has been released as of the advisory date.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 15.4.1 or later
Vendor Advisory: https://helpx.adobe.com/security/products/premiere_pro/apsb21-67.html
Restart Required: Yes
Instructions:
1. Open Adobe Premiere Pro. 2. Go to Help > Updates. 3. Install available updates to version 15.4.1 or later. 4. Restart the application.
🔧 Temporary Workarounds
Block .exr file execution
allPrevent Premiere Pro from processing .exr files through application restrictions
User training and file validation
allTrain users to only open .exr files from trusted sources and implement file validation procedures
🧯 If You Can't Patch
- Implement application whitelisting to prevent execution of unauthorized files
- Restrict user permissions to limit potential damage from successful exploitation
🔍 How to Verify
Check if Vulnerable:
Check Adobe Premiere Pro version in Help > About Premiere Pro. If version is 15.4 or earlier, the system is vulnerable.Check Version:
Not applicable - check through application interfaceVerify Fix Applied:
Verify version is 15.4.1 or later in Help > About Premiere Pro.📡 Detection & Monitoring
Log Indicators:
- Application crashes when opening .exr files
- Unexpected process creation from Premiere Pro
Network Indicators:
- Outbound connections from Premiere Pro to unexpected destinations
SIEM Query:
source="premiere_pro" AND (event_type="crash" OR process_name="unexpected_executable")