CVE-2017-2869 in Xltek NeuroWorks
Summary
by MITRE
An exploitable code execution vulnerability exists in the OpenProducer functionality of Natus Xltek NeuroWorks 8. A specially crafted network packet can cause a stack buffer overflow resulting in code execution. An attacker can send a malicious packet to trigger this vulnerability.
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Analysis
by VulDB Data Team • 02/27/2023
The vulnerability identified as CVE-2017-2869 represents a critical stack buffer overflow flaw within the OpenProducer functionality of Natus Xltek NeuroWorks 8 software. This vulnerability resides in medical device networking components that handle real-time neurological data transmission and processing. The affected system operates within healthcare environments where continuous monitoring and data exchange are essential for patient care, making this vulnerability particularly concerning from a security perspective. The flaw manifests when the system processes specially crafted network packets designed to overflow stack memory buffers, potentially allowing remote code execution. This type of vulnerability falls under CWE-121 Stack-based Buffer Overflow, which is classified as a fundamental memory safety issue that has been consistently identified as a primary attack vector in cybersecurity assessments. The attack surface is specifically tied to the network communication protocols implemented in the NeuroWorks 8 platform, which facilitates data exchange between various medical devices and monitoring systems in clinical settings.
The technical exploitation of this vulnerability requires an attacker to send a maliciously crafted network packet to the target system, which then processes this packet through the OpenProducer functionality without adequate input validation. The stack buffer overflow occurs when the system attempts to write data beyond the allocated buffer boundaries in memory, potentially overwriting adjacent memory locations including return addresses and function pointers. This memory corruption can be leveraged to redirect program execution flow to attacker-controlled code, effectively granting remote code execution privileges. The vulnerability's impact is amplified by the fact that the affected system typically operates in continuous monitoring environments where network connectivity is essential, making it difficult to isolate or protect the system from external network-based attacks. According to ATT&CK framework, this vulnerability maps to T1203 Exploitation for Client Execution and T1059 Command and Scripting Interpreter, as it enables attackers to execute arbitrary commands on the target system through network-based exploitation. The attack requires minimal privileges and can be executed remotely, making it particularly dangerous in healthcare environments where system availability and data integrity are paramount.
The operational impact of CVE-2017-2869 extends beyond simple code execution to encompass potential patient safety risks and data integrity breaches within medical environments. In healthcare settings, the NeuroWorks 8 system is often used for critical neurological monitoring, where system compromise could lead to interrupted patient monitoring, false alarms, or even complete system failure. The vulnerability could enable attackers to manipulate patient data, disrupt monitoring services, or gain unauthorized access to sensitive medical information stored within the system. Given that this is a stack buffer overflow vulnerability, the potential for denial of service attacks is significant, as the system may crash or become unresponsive when processing malicious packets. The exploitation of this vulnerability aligns with ATT&CK technique T1499 Endpoint Termination, where adversaries may seek to disrupt critical healthcare services. Organizations utilizing Natus Xltek NeuroWorks 8 systems face the risk of regulatory compliance violations, as healthcare security standards such as HIPAA require protection against unauthorized access and data breaches. The vulnerability's presence in medical device software also raises concerns about the broader security posture of healthcare networks, as compromised devices can serve as entry points for lateral movement within hospital networks.
Mitigation strategies for CVE-2017-2869 should prioritize immediate patch deployment from the vendor, as this vulnerability has been addressed through official security updates. Organizations should implement network segmentation to isolate medical devices from general network traffic, reducing the attack surface and limiting potential exploitation pathways. Network intrusion detection systems should be configured to monitor for suspicious network traffic patterns that may indicate exploitation attempts, particularly focusing on unusual packet structures targeting the OpenProducer functionality. Access controls should be strengthened through multi-factor authentication and role-based access restrictions for system administration functions. Regular security assessments and vulnerability scanning should be conducted to identify similar vulnerabilities in other medical device systems within the healthcare network. The implementation of network monitoring solutions that can detect and alert on anomalous network behavior related to the affected protocols is essential. Additionally, maintaining detailed network traffic logs and implementing proper incident response procedures will enable organizations to detect and respond to exploitation attempts more effectively. Organizations should also consider implementing network access controls and firewall rules that restrict communication to only necessary ports and protocols associated with the NeuroWorks 8 system, reducing the potential attack surface for similar vulnerabilities.