CVE-2021-43028
📋 TL;DR
Adobe Premiere Rush versions 1.5.16 and earlier contain a memory corruption vulnerability when processing malicious M4A files. This could allow attackers to execute arbitrary code with the privileges of the current user. Users must open a specially crafted M4A file to trigger the exploit.
💻 Affected Systems
- Adobe Premiere Rush
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise via arbitrary code execution leading to data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Local privilege escalation leading to user account compromise and potential lateral movement within the network.
If Mitigated
Limited impact if user runs with minimal privileges and file execution is blocked by security controls.
🎯 Exploit Status
Requires user interaction to open malicious file. Memory corruption vulnerabilities typically require some exploit development skill.
🛠️ 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 available updates. 4. Restart the application.
🔧 Temporary Workarounds
Block M4A file execution
allPrevent Premiere Rush from processing M4A files via application control or file extension blocking.
Run with reduced privileges
allConfigure Premiere Rush to run with standard user privileges instead of administrative rights.
🧯 If You Can't Patch
- Disable Premiere Rush until patching is possible
- Implement application whitelisting to prevent execution of unauthorized files
🔍 How to Verify
Check if Vulnerable:
Check Premiere Rush version in application settings or About dialog. If version is 1.5.16 or earlier, system is vulnerable.Check Version:
On Windows: Check via Control Panel > Programs > Programs and Features. On macOS: Check via About Premiere Rush in application menu.Verify Fix Applied:
Verify version is 1.5.17 or later in application settings.📡 Detection & Monitoring
Log Indicators:
- Application crashes when processing M4A files
- Unexpected process creation from Premiere Rush
Network Indicators:
- Outbound connections from Premiere Rush to unknown IPs post-crash
SIEM Query:
Process:premiererush.exe AND (EventID:1000 OR EventID:1001) OR FileExtension:.m4a AND Process:premiererush.exe