CVE-2023-31008
📋 TL;DR
This vulnerability in NVIDIA DGX H100 BMC's IPMI interface allows attackers to execute arbitrary code, cause denial of service, escalate privileges, or disclose information through improper input validation. It affects organizations using NVIDIA DGX H100 systems with vulnerable BMC firmware. The vulnerability requires network access to the BMC interface.
💻 Affected Systems
- NVIDIA DGX H100
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining root access to BMC, allowing persistent control over the server hardware, data theft, and potential lateral movement to other systems.
Likely Case
Denial of service affecting server management capabilities, potentially requiring physical intervention to restore functionality.
If Mitigated
Limited impact if BMC is isolated on management network with strict access controls and monitoring.
🎯 Exploit Status
Exploitation requires network access to the BMC IPMI interface and knowledge of the specific vulnerability. No public exploit code is available as of current information.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check NVIDIA advisory for specific patched firmware version
Vendor Advisory: https://nvidia.custhelp.com/app/answers/detail/a_id/5473
Restart Required: Yes
Instructions:
1. Download latest BMC firmware from NVIDIA support portal. 2. Follow NVIDIA DGX H100 BMC firmware update procedures. 3. Reboot BMC after update. 4. Verify firmware version post-update.
🔧 Temporary Workarounds
Network Isolation
allIsolate BMC management network from production and user networks
Configure firewall rules to restrict access to BMC IPMI port (default 623) to management network only
Access Control
allImplement strict authentication and IP whitelisting for BMC access
Configure BMC to require strong authentication
Implement IP-based access control lists
🧯 If You Can't Patch
- Implement strict network segmentation to isolate BMC interfaces from untrusted networks
- Enable logging and monitoring of all BMC access attempts and implement alerting for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check BMC firmware version via IPMI tool: ipmitool mc info | grep 'Firmware Revision'Check Version:
ipmitool mc info | grep 'Firmware Revision'Verify Fix Applied:
Verify firmware version matches or exceeds patched version from NVIDIA advisory📡 Detection & Monitoring
Log Indicators:
- Unusual IPMI connection attempts
- Failed authentication attempts to BMC
- Unexpected BMC configuration changes
Network Indicators:
- Traffic to BMC IPMI port (623) from unauthorized sources
- Unusual IPMI protocol patterns
SIEM Query:
source_port=623 OR dest_port=623 | stats count by src_ip, dest_ip, action