CVE-2023-4344
📋 TL;DR
This vulnerability in Broadcom RAID Controller web interface allows attackers to predict SSL/TLS session keys due to insufficient randomness when establishing CIM connections. This affects systems using Broadcom RAID Controllers with the vulnerable web interface enabled. Attackers could potentially decrypt or manipulate encrypted communications.
💻 Affected Systems
- Broadcom RAID Controller with web interface
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through man-in-the-middle attacks, data exfiltration, and unauthorized administrative access to RAID storage systems.
Likely Case
Session hijacking, credential theft, and unauthorized access to RAID management interface leading to data manipulation or destruction.
If Mitigated
Limited impact if network segmentation prevents external access and strong authentication controls are in place.
🎯 Exploit Status
Exploitation requires network access to the web interface and understanding of CIM protocol; no public exploits available at time of analysis
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Broadcom advisory for specific fixed firmware versions
Vendor Advisory: https://www.broadcom.com/support/resources/product-security-center
Restart Required: Yes
Instructions:
1. Check Broadcom advisory for affected firmware versions. 2. Download updated firmware from Broadcom support portal. 3. Backup current configuration. 4. Apply firmware update through management interface. 5. Reboot controller. 6. Verify update successful.
🔧 Temporary Workarounds
Disable web interface
allTemporarily disable the vulnerable web interface component
Specific commands vary by controller model; consult Broadcom documentation for web interface disable procedures
Network segmentation
allRestrict access to RAID controller management interface to trusted networks only
firewall rules to block external access to controller management ports
🧯 If You Can't Patch
- Implement strict network segmentation to isolate RAID controllers from untrusted networks
- Enable multi-factor authentication for management interface access
🔍 How to Verify
Check if Vulnerable:
Check firmware version against Broadcom advisory; verify if web interface is enabled and accessibleCheck Version:
Controller-specific commands vary; typically available through controller management interface or CLI toolsVerify Fix Applied:
Confirm firmware version matches or exceeds patched version listed in Broadcom advisory📡 Detection & Monitoring
Log Indicators:
- Multiple failed CIM connection attempts
- Unusual SSL/TLS handshake patterns
- Unauthorized access attempts to management interface
Network Indicators:
- Unusual traffic patterns to RAID controller management ports
- SSL/TLS session anomalies
SIEM Query:
source="raid_controller" AND (event="authentication_failure" OR event="cim_connection_error")