CVE-2024-48973

METADATA VENDOR_NAME: Baxter AFFECTED_VERSION: Unknown MITRE_TACTIC: T1190 — Exploit Public-Facing Application SHODAN_DORKS: ["Baxter Life2000", "ventilator serial debug", "Life2000 port 0"] CWE_ID: CWE-306 CVSS_VECTOR: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H POC_STATUS: Public PATCH_DETAILS: No patch available (0/4 confidence)

Executive Summary

CVE-2024-48973 affects the Baxter Life2000 Ventilator. The debug port on the device's serial interface is enabled by default, allowing unauthenticated network-accessible connections that transmit unencrypted messages. This leads to unauthorized disclosure of information and arbitrary changes to device settings and performance. The vulnerability carries a CVSS score of 9.3 and maps to CWE-306.

Technical Analysis

The core issue is the default-enabled debug port on the ventilator serial interface. Per the CNA title and NVD description, this port accepts connections without authentication. Messages exchanged over the port are unencrypted. An attacker can therefore read device data and issue commands that alter operational parameters. No specific function names, endpoints, or code paths are provided in the source data, so the mechanism is described strictly at the class level: missing authentication for a critical function that directly controls device behavior and exposes telemetry.

Exploitation Scenarios

Attack chain inferred strictly from the NVD description and supplied data.

1. Reconnaissance/target identification: Locate exposed Baxter Life2000 ventilators via network scanning or Shodan queries matching the device.
2. The specific flaw class (missing authentication for critical function) is triggered by establishing a connection to the enabled debug port.
3. Payload/execution method at the vulnerability-class level: Send arbitrary unauthenticated messages over the unencrypted channel.
4. Post-exploitation impact: Read sensitive device information and modify settings or performance parameters. No public PoC available; attack chain is inferred from vulnerability class.

Impact Assessment

A successful attack grants full control over ventilator operation and telemetry, directly threatening patient safety and clinical workflows. The CVSS vector (AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H) yields a 9.3 score reflecting network exploitability, low complexity, and maximum impact across confidentiality, integrity, and availability. Blast radius includes any network-reachable Life2000 unit; affected systems span hospital ICU networks and connected biomedical engineering environments. No patch evidence exists.

Detection Guidance

Sigma Rule

title: Baxter Life2000 Debug Port Access
id: 8f3c2a1b-4e5d-4f2a-9c8b-7d6e5f4a3b2c
status: experimental
description: Detects unauthenticated connections to Life2000 debug port
logsource:
  product: firewall
  service: network
detection:
  selection:
    dst_port: 0
    event_type: connection
  condition: selection
fields:
  - src_ip
  - dst_ip
falsepositives:
  - Legitimate biomedical maintenance
level: high

YARA Rule

rule Baxter_Life2000_Debug_Port {
    meta:
        description = "Detects network traffic patterns consistent with Life2000 debug port access"
        author = "valtersit.com"
    strings:
        $debug = "debug" ascii wide
        $vent = "Life2000" ascii wide
    condition:
        any of them
}

Suricata IDS Rule

alert tcp any any -> any 0 (msg:"Baxter Life2000 unauthenticated debug port access"; flow:established,to_server; content:"debug"; sid:2024489731; rev:1;)

Elastic Detection

sequence by source.ip, destination.ip
  [network where destination.port == 0 and event.action == "connection"]

Splunk SPL Query

index=firewall dest_port=0 event_type=connection 
| stats count by src_ip, dest_ip 
| where count > 0

Wazuh OSSEC Rule

<rule id="207293" level="12">
  <if_sid>100001</if_sid>
  <match>Baxter Life2000 debug port</match>
  <description>Unauthenticated access to ventilator debug interface</description>
</rule>

Mitigation & Patch Guidance

Patch confidence: 0/4 (UNPATCHED — no patch evidence from any tracked source).

1. Immediate mitigations: Disable the serial debug port via hardware configuration if supported; isolate ventilator networks behind strict firewalls that block all inbound traffic to the debug interface; monitor for unexpected connections on the serial/network path.
2. Patch/upgrade steps: None available; contact Baxter support for guidance on disabling the port.
3. Long-term hardening: Implement network segmentation for all medical devices, enforce authenticated and encrypted management channels, and conduct regular firmware reviews for default debug features.

References

https://nvd.nist.gov/vuln/detail/CVE-2024-48973
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2024-48973
Baxter Life2000 product documentation (vendor advisory search)
No CISA KEV entry; no public exploit code or known threat actor campaigns observed.