CVE-2020-12040
📋 TL;DR
This CVE describes a critical vulnerability in Baxter/Sigma Spectrum Infusion Systems where the devices communicate using unauthenticated clear-text protocols. An attacker who bypasses network security could intercept or manipulate medical infusion data, potentially affecting patient safety. This affects specific infusion pump models used in healthcare settings.
💻 Affected Systems
- Sigma Spectrum Infusion System
- Baxter Spectrum Infusion System
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could perform man-in-the-middle attacks to alter medication dosage data, potentially causing patient harm or death through incorrect drug administration.
Likely Case
Attackers could intercept sensitive operational data, monitor infusion activities, or disrupt medical device communications in healthcare networks.
If Mitigated
With proper network segmentation and encryption controls, the risk reduces to unauthorized monitoring of non-critical system status data.
🎯 Exploit Status
Exploitation requires network access to the device but no authentication. Attack complexity is low once network access is achieved.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Contact Baxter for specific patched versions
Vendor Advisory: https://www.us-cert.gov/ics/advisories/icsma-20-170-04
Restart Required: Yes
Instructions:
1. Contact Baxter Medical for security updates 2. Apply firmware updates following manufacturer instructions 3. Validate device functionality post-update 4. Document update in medical device inventory
🔧 Temporary Workarounds
Network Segmentation
allIsolate infusion systems on dedicated VLANs with strict access controls
Encryption Enforcement
allImplement network-level encryption (VPN/IPsec) for all medical device communications
🧯 If You Can't Patch
- Implement strict network segmentation to isolate infusion systems from general hospital networks
- Deploy network monitoring and intrusion detection specifically for medical device traffic patterns
🔍 How to Verify
Check if Vulnerable:
Check device model and firmware version against affected models: 35700BAX (v6.x) or 35700BAX2 (v8.x)Check Version:
Check device display or configuration interface for model and version informationVerify Fix Applied:
Verify with Baxter that device has received security updates addressing CVE-2020-12040📡 Detection & Monitoring
Log Indicators:
- Unauthorized network connections to infusion system ports
- Unusual traffic patterns to/from medical devices
Network Indicators:
- Clear-text communications on infusion system network segments
- Unencrypted traffic to medical device ports
SIEM Query:
source_ip IN (medical_device_ips) AND protocol = 'tcp' AND NOT encrypted = true