CVE-2021-40783
📋 TL;DR
Adobe Premiere Rush versions 1.5.16 and earlier contain a memory corruption vulnerability when processing malicious WAV files. This could allow attackers to execute arbitrary code with the privileges of the current user. Users who open untrusted WAV files in affected versions are at risk.
💻 Affected Systems
- Adobe Premiere Rush
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via arbitrary code execution with user privileges, potentially leading to data theft, ransomware deployment, or lateral movement.
Likely Case
Local privilege escalation or malware installation when users open malicious WAV files, potentially compromising the workstation.
If Mitigated
No impact if patched or if users avoid opening untrusted WAV files in Premiere Rush.
🎯 Exploit Status
Requires user interaction to open malicious WAV file. Memory corruption vulnerabilities can be complex to exploit reliably.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.5.17 or later
Vendor Advisory: https://helpx.adobe.com/security/products/premiere_rush/apsb21-101.html
Restart Required: Yes
Instructions:
1. Open Adobe Premiere Rush. 2. Go to Help > Check for Updates. 3. Install update to version 1.5.17 or later. 4. Restart the application.
🔧 Temporary Workarounds
Avoid untrusted WAV files
allDo not open WAV files from untrusted sources in Adobe Premiere Rush.
Use alternative software for WAV files
allUse different audio editing software to process WAV files from untrusted sources.
🧯 If You Can't Patch
- Restrict user permissions to limit impact of code execution
- Implement application whitelisting to prevent unauthorized executables
🔍 How to Verify
Check if Vulnerable:
Check Adobe Premiere Rush version in application (Help > About Premiere Rush). If version is 1.5.16 or earlier, system is vulnerable.Check Version:
Not applicable - check version through application interfaceVerify Fix Applied:
Verify version is 1.5.17 or later after update installation.📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing WAV files
- Unusual process execution from Premiere Rush
Network Indicators:
- Outbound connections from Premiere Rush to unusual destinations
SIEM Query:
Process creation where parent process contains 'Premiere Rush' AND (process contains 'cmd' OR process contains 'powershell' OR process contains 'wscript')