CVE-2024-10405
📋 TL;DR
Brocade SANnav versions before 2.3.1b enable weak TLS ciphers on ports 443 and 18082, allowing attackers to intercept and read network traffic containing switch performance data, zoning information, and device identifiers. This affects organizations using Brocade SANnav for storage area network management. No customer data, personal information, or credentials are exposed.
💻 Affected Systems
- Brocade SANnav
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker intercepts all SANnav management traffic, gaining visibility into network topology, switch configurations, and device identifiers, potentially enabling further attacks on the storage infrastructure.
Likely Case
An attacker with network access captures performance metrics, port status, zoning data, and WWN/IP addresses, compromising network visibility and potentially aiding reconnaissance for targeted attacks.
If Mitigated
With proper network segmentation and monitoring, impact is limited to intercepted non-sensitive telemetry data that doesn't include credentials or customer information.
🎯 Exploit Status
Requires man-in-the-middle position or network access to intercept TLS traffic; attacker must force downgrade to weak ciphers
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: SANnav 2.3.1b
Vendor Advisory: https://support.broadcom.com/web/ecx/support-content-notification/-/external/content/SecurityAdvisories/0/25402
Restart Required: Yes
Instructions:
1. Download SANnav 2.3.1b from Broadcom support portal
2. Backup current configuration
3. Apply update following vendor documentation
4. Restart SANnav services
🔧 Temporary Workarounds
Disable weak TLS ciphers
allManually configure SANnav to disable weak TLS ciphers and enforce strong encryption
Configuration steps vary by version - consult vendor documentation
Network segmentation
allIsolate SANnav management traffic to trusted networks only
Implement firewall rules to restrict access to ports 443 and 18082
🧯 If You Can't Patch
- Implement strict network segmentation to limit access to SANnav management interfaces
- Deploy network monitoring and IDS/IPS to detect TLS downgrade attacks
🔍 How to Verify
Check if Vulnerable:
Check SANnav version via web interface or CLI; test TLS configuration on ports 443 and 18082 using tools like nmap or testssl.shCheck Version:
From SANnav CLI: show version or check web interface About pageVerify Fix Applied:
Verify version is 2.3.1b or later; test that weak ciphers are rejected on ports 443 and 18082📡 Detection & Monitoring
Log Indicators:
- TLS handshake failures, unexpected cipher suite negotiations
Network Indicators:
- TLS downgrade attempts, unusual traffic patterns on ports 443/18082
SIEM Query:
source_port:443 OR source_port:18082 AND (event_type:tls_handshake OR protocol:ssl) AND cipher_suite:weak