CVE-2022-50794
📋 TL;DR
This vulnerability allows unauthenticated attackers to execute arbitrary system commands on SOUND4 IMPACT/FIRST/PULSE/Eco systems by injecting shell commands through the username parameter in login scripts. Organizations using these products in versions 2.x and below are affected, potentially leading to complete system compromise.
💻 Affected Systems
- SOUND4 IMPACT
- SOUND4 FIRST
- SOUND4 PULSE
- SOUND4 Eco
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system takeover with root/administrator privileges, data exfiltration, ransomware deployment, or use as pivot point for network attacks.
Likely Case
Unauthenticated remote code execution leading to system compromise, credential theft, and lateral movement within the network.
If Mitigated
Limited impact if systems are isolated, monitored, and have restricted network access, though exploitation remains possible.
🎯 Exploit Status
Exploitation requires only HTTP POST requests with crafted username parameter. Public exploit details available on multiple security sites.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: https://www.sound4.com/
Restart Required: No
Instructions:
1. Contact SOUND4 vendor for patch availability 2. Check vendor website for security updates 3. Apply any available patches immediately
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to reject shell metacharacters in username parameter
# Example for Apache mod_security:
SecRule ARGS:username "[;|&`$()]" "deny,status:403,id:1001"
Web Application Firewall
allDeploy WAF rules to block command injection patterns
# Example WAF rule to block shell metacharacters in POST data
🧯 If You Can't Patch
- Isolate affected systems in separate network segments with strict firewall rules
- Implement network-based intrusion detection to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Test with controlled payload: Send POST request to index.php or login.php with username parameter containing ';id;' and check for command execution responseCheck Version:
# Check product version via web interface or configuration files
# Exact command depends on installation method and system configurationVerify Fix Applied:
Retest with same payload after implementing controls - should receive error or rejection instead of command output📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to index.php/login.php with shell metacharacters in username parameter
- Unusual system commands executed by web server process
Network Indicators:
- HTTP traffic containing shell metacharacters in POST parameters
- Outbound connections from web server to unexpected destinations
SIEM Query:
web.url="*index.php*" OR web.url="*login.php*" AND http.method="POST" AND web.post_param="*[;|&`$()]*"🔗 References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/247914
- https://packetstormsecurity.com/files/170266/SOUND4-IMPACT-FIRST-PULSE-Eco-2.x-username-Command-Injection.html
- https://www.sound4.com/
- https://www.vulncheck.com/advisories/sound-impactfirstpulseeco-x-unauthenticated-command-injection-via-username
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2022-5739.php
