CVE-2020-25179: GE Healthcare 3.0T Signa HDxt Vulnerability

CVE-2020-25179 Overview

CVE-2020-25179 is a critical information disclosure vulnerability affecting GE Healthcare Imaging and Ultrasound Products. The vulnerability allows specific credentials to be exposed during transport over the network, potentially enabling attackers to intercept sensitive authentication data transmitted by affected medical imaging devices.

This vulnerability is particularly concerning given the sensitive nature of healthcare environments and the critical role these imaging systems play in patient care. Successful exploitation could allow unauthorized access to medical imaging systems, potentially compromising patient data confidentiality and system integrity.

Critical Impact

Credentials transmitted by affected GE Healthcare medical imaging devices can be intercepted over the network, enabling attackers to gain unauthorized access to critical healthcare infrastructure and sensitive patient data.

Affected Products

• GE Healthcare MRI Systems (3.0T Signa HDXT, 3.0T Signa HD 16/23, 1.5T Brivo MR355, Optima MR360, Signa HDi 1.5T, Signa Vibrant)
• GE Healthcare Ultrasound Systems (LOGIQ 5/7/9 series, Vivid series, Voluson 730 series, EchoPAC)
• GE Healthcare Interventional Systems (Innova 2000/3100/4100 series, Innova IGS series, Optima IGS series)
• GE Healthcare X-Ray Systems (Brivo XR series, Definium series, Discovery XR series, Optima XR series)
• GE Healthcare CT Systems (BrightSpeed series, Brivo CT385, Discovery CT series, LightSpeed series, Optima CT series, Revolution series)
• GE Healthcare Nuclear Medicine/PET Systems (Brivo NM 615, Discovery NM/CT series, Infinia, Optima NM/CT 640, Xeleris, PET Discovery IQ, PETrace 800)
• GE Healthcare Mammography Systems (Seno 200D, Seno DS, Seno Essential, Senographe Pristina)

Discovery Timeline

• December 14, 2020 - CVE-2020-25179 published to NVD
• November 21, 2024 - Last updated in NVD database

Technical Details for CVE-2020-25179

Vulnerability Analysis

This vulnerability involves the exposure of specific credentials during network transport across a wide range of GE Healthcare imaging and ultrasound products. The affected devices transmit authentication credentials in a manner that allows them to be intercepted by attackers with network access.

The vulnerability falls under CWE-497 (Exposure of Sensitive System Information to an Unauthorized Control Sphere) and CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor). These weaknesses indicate that the affected systems fail to adequately protect credential data during network transmission, potentially using unencrypted channels or weak encryption schemes.

Healthcare environments typically operate with complex network architectures where medical devices communicate with various systems including PACS (Picture Archiving and Communication Systems), hospital information systems, and other clinical applications. This interconnected nature amplifies the risk, as a compromised credential could provide access to multiple critical systems.

Root Cause

The root cause of this vulnerability stems from inadequate protection of credentials during network transmission. The affected GE Healthcare imaging and ultrasound devices transmit specific credentials in a manner that exposes them to potential interception. This could involve:

• Transmission of credentials over unencrypted network channels
• Use of weak or deprecated encryption protocols for credential protection
• Insufficient obfuscation of authentication data during transport
• Lack of secure key exchange mechanisms for credential transmission

Attack Vector

The vulnerability is exploitable over the network, requiring no user interaction or prior privileges. An attacker positioned on the same network segment as affected devices could passively capture network traffic or actively perform man-in-the-middle attacks to intercept credentials. Once credentials are obtained, attackers could:

• Gain unauthorized access to affected medical imaging systems
• Access patient health information stored on or transmitted by these devices
• Modify system configurations or diagnostic parameters
• Use compromised devices as a pivot point for lateral movement within healthcare networks
• Potentially disrupt critical medical imaging operations

The attack does not require physical access to the devices and can be executed remotely by anyone with network access to the affected equipment, making it particularly dangerous in environments with inadequate network segmentation.

Detection Methods for CVE-2020-25179

Indicators of Compromise

• Unusual authentication attempts or successful logins from unexpected network locations to GE Healthcare imaging devices
• Network traffic analysis revealing credential-related data transmitted in cleartext or weakly encrypted formats
• Anomalous access patterns to medical imaging systems outside normal operational hours
• Log entries indicating access from previously unknown IP addresses or service accounts

Detection Strategies

• Deploy network intrusion detection systems (NIDS) configured to identify credential exposure patterns in traffic to/from GE Healthcare devices
• Implement deep packet inspection on network segments containing affected medical imaging equipment
• Monitor authentication logs on GE Healthcare systems for signs of credential misuse or unauthorized access
• Utilize security information and event management (SIEM) solutions to correlate authentication events across healthcare infrastructure

Monitoring Recommendations

• Establish baseline network traffic patterns for all affected GE Healthcare imaging devices and alert on deviations
• Configure logging to capture all authentication events on affected systems with adequate retention periods
• Implement network traffic analysis tools capable of identifying sensitive data exposure in medical device communications
• Conduct regular network traffic audits specifically targeting DICOM and proprietary GE Healthcare protocols

How to Mitigate CVE-2020-25179

Immediate Actions Required

• Review and implement the security guidance provided in the CISA ICS Advisory ICSMA-20-343-01
• Isolate affected GE Healthcare imaging and ultrasound devices on dedicated network segments with strict access controls
• Implement network monitoring and traffic inspection for all affected devices
• Contact GE Healthcare service representatives to inquire about available security patches and firmware updates
• Review and restrict network access to affected devices to only authorized systems and users

Patch Information

Organizations should contact GE Healthcare directly for information regarding security patches and firmware updates for affected products. The CISA ICS Advisory ICSMA-20-343-01 provides additional guidance on mitigating this vulnerability.

Given the large number of affected product lines spanning MRI, ultrasound, X-ray, CT, nuclear medicine, PET, and mammography systems, patch availability and deployment timelines may vary by product. Healthcare organizations should work closely with GE Healthcare representatives to develop a prioritized patching strategy.

Workarounds

• Implement strict network segmentation to isolate affected medical imaging devices from general hospital networks
• Deploy VPN or encrypted tunnels for all network communications involving affected GE Healthcare devices
• Implement strong access controls and network access lists to restrict communication paths to/from affected devices
• Enable additional authentication mechanisms where available to supplement potentially compromised credentials
• Consider implementing network encryption at the infrastructure level (e.g., MACsec, IPsec) for network segments containing affected devices

# Example network segmentation using iptables for Linux-based network devices
# Restrict access to GE Healthcare imaging device subnet

# Allow only authorized PACS server to communicate with imaging devices
iptables -A FORWARD -s 10.10.50.0/24 -d 10.10.100.0/24 -j ACCEPT
iptables -A FORWARD -s 10.10.100.0/24 -d 10.10.50.0/24 -j ACCEPT

# Block all other traffic to imaging device subnet
iptables -A FORWARD -d 10.10.100.0/24 -j DROP

# Log dropped connection attempts for monitoring
iptables -A FORWARD -d 10.10.100.0/24 -j LOG --log-prefix "BLOCKED-IMAGING-ACCESS: "