CVE-2018-6444
📋 TL;DR
This vulnerability in Brocade Network Advisor allows remote unauthenticated attackers to execute arbitrary operating system commands and code on affected systems. It affects Brocade Network Advisor versions before 14.1.0, potentially compromising network management infrastructure.
💻 Affected Systems
- Brocade Network Advisor
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the Brocade Network Advisor server, potentially pivoting to other network infrastructure.
Likely Case
Remote code execution leading to data theft, service disruption, or installation of persistent backdoors.
If Mitigated
Limited impact if system is isolated, properly segmented, and has additional security controls.
🎯 Exploit Status
CWE-78 (OS Command Injection) vulnerabilities are typically easy to exploit once discovered. Public advisories suggest exploitation is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 14.1.0 or later
Vendor Advisory: https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2018-744
Restart Required: Yes
Instructions:
1. Download Brocade Network Advisor version 14.1.0 or later from Broadcom support portal. 2. Backup current configuration and data. 3. Install the updated version following vendor documentation. 4. Restart the Brocade Network Advisor service.
🔧 Temporary Workarounds
Network Segmentation
allIsolate Brocade Network Advisor from untrusted networks and restrict access to trusted IP addresses only.
Firewall Restrictions
allBlock external access to Brocade Network Advisor web interface ports (typically 80/443).
🧯 If You Can't Patch
- Immediately isolate the system from all untrusted networks and implement strict network access controls.
- Monitor system logs aggressively for suspicious activity and implement additional authentication layers if possible.
🔍 How to Verify
Check if Vulnerable:
Check Brocade Network Advisor version via web interface or installation directory. Versions before 14.1.0 are vulnerable.Check Version:
Check web interface login page or consult installation documentation for version verification.Verify Fix Applied:
Verify version is 14.1.0 or later and test that the web interface functions normally after update.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Unauthenticated access attempts to web interface
- Suspicious process creation
Network Indicators:
- Unexpected outbound connections from Brocade Network Advisor server
- Unusual traffic patterns to web interface ports
SIEM Query:
source="brocade_na_logs" AND (event="command_execution" OR event="unauthenticated_access")🔗 References
- https://security.netapp.com/advisory/ntap-20190411-0005/
- https://support.lenovo.com/us/en/product_security/LEN-25655
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2018-744
- https://security.netapp.com/advisory/ntap-20190411-0005/
- https://support.lenovo.com/us/en/product_security/LEN-25655
- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2018-744
