CVE-2021-37165:

Buffer overflow vulnerability in Swisslog Healthcare Nexus Panel HMI3 Control Panel allows remote code execution.

Score
A numerical rating that indicates how dangerous this vulnerability is.

9.8Critical

Published Date:Aug 2, 2021
CISA KEV Date:*No Data*
Industries Affected:20

Threat Predictions

EPSS Score:5.0
EPSS Percentile:90%

Exploitability

Score:3.9
Attack Vector:NETWORK
Attack Complexity:LOW
Privileges Required:NONE
User Interaction:NONE
Scope:UNCHANGED

Impact

Score:5.9
Confidentiality Impact:HIGH
Integrity Impact:HIGH
Availability Impact:HIGH

Description Preview

Buffer overflow vulnerability in Swisslog Healthcare Nexus Panel HMI3 Control Panel allows remote code execution.

Overview

The vulnerability exists in the message processing functionality of the HMI3 Control Panel in Swisslog Healthcare's Nexus Panel system. When a message is sent to the HMI TCP socket, it is forwarded to the hmiProcessMsg function through a queue mechanism called pendingQ. Due to improper input validation and buffer management, this process can trigger a buffer overflow condition. An attacker who successfully exploits this vulnerability could potentially execute arbitrary code with the privileges of the application, potentially leading to complete system compromise. This vulnerability is particularly concerning as these systems are commonly deployed in healthcare environments, where disruption could impact patient care.

Remediation

To address this vulnerability, organizations should:
1. Update to Nexus Software version 7.2.5.7 or later, which contains patches for this vulnerability.
2. If immediate patching is not possible, implement network segmentation to restrict access to the affected systems.
3. Monitor network traffic to and from the Nexus Panel systems for suspicious activity.
4. Contact Swisslog Healthcare technical support for guidance specific to your deployment.
5. Implement the principle of least privilege for all systems and users that interact with the Nexus Panel.
6. Consider implementing additional network security controls such as firewalls and intrusion detection systems to protect vulnerable systems.