CVE-2025-57431
📋 TL;DR
The Sound4 PULSE-ECO AES67 1.22 web management interface has a critical vulnerability that allows remote attackers to execute arbitrary code by uploading a malicious firmware update package. Attackers can modify the manual.sh script within the firmware to inject commands, gaining full control of affected devices. This affects all organizations using the vulnerable version of this audio networking device.
💻 Affected Systems
- Sound4 PULSE-ECO AES67
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the device allowing persistent backdoor installation, lateral movement to other network systems, and disruption of audio services.
Likely Case
Attacker gains shell access to the device, installs malware, and uses it as a foothold for further network reconnaissance or attacks.
If Mitigated
Attack prevented by network segmentation and access controls, limiting impact to isolated audio network segment.
🎯 Exploit Status
Exploitation requires access to the web interface and ability to upload firmware. The GitHub reference contains proof-of-concept details.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sound4.com
Restart Required: Yes
Instructions:
1. Check Sound4 website for security advisory. 2. Download and apply firmware update if available. 3. Restart device after update. 4. Verify update was successful.
🔧 Temporary Workarounds
Disable Web Interface
allDisable the web-based management interface to prevent firmware upload attacks
# Configuration varies by device - consult Sound4 documentation
Network Segmentation
linuxIsolate PULSE-ECO devices on separate VLAN with strict firewall rules
# Example: iptables -A INPUT -s 192.168.1.0/24 -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit web interface access to trusted IPs only
- Monitor for unauthorized firmware upload attempts and review device logs regularly
🔍 How to Verify
Check if Vulnerable:
Check device firmware version via web interface at System > About. If version is 1.22, device is vulnerable.Check Version:
curl -s http://device-ip/system/about | grep 'Firmware Version'Verify Fix Applied:
After applying any vendor update, verify firmware version is no longer 1.22 and test that manual firmware uploads are properly validated.📡 Detection & Monitoring
Log Indicators:
- Firmware upload events
- manual.sh execution in system logs
- Unusual process execution from web interface
Network Indicators:
- HTTP POST requests to firmware upload endpoints
- Unexpected outbound connections from audio devices
SIEM Query:
source="pulse-eco-logs" AND (event="firmware_upload" OR process="manual.sh")