CVE-2021-37166 Explained : Impact and Mitigation
Discover the impact of CVE-2021-37166, a buffer overflow vulnerability in HMI3 Control Panel of Swisslog Healthcare Nexus Panel. Learn about affected versions and mitigation strategies.
A buffer overflow vulnerability leading to denial of service was found in HMI3 Control Panel in Swisslog Healthcare Nexus Panel. This vulnerability affects versions of Nexus Software before 7.2.5.7.
Understanding CVE-2021-37166
This CVE identifies a buffer overflow issue in the HMI3 Control Panel, potentially allowing denial of service attacks.
What is CVE-2021-37166?
The vulnerability exists in the HMI3 Control Panel in Swisslog Healthcare Nexus Panel. It occurs when HMI3 binds a local service to a TCP port on all device interfaces, causing delays in GUI connection and enabling external attackers to hijack the connection.
The Impact of CVE-2021-37166
Exploitation of this vulnerability could lead to denial of service, potentially disrupting the normal operation of affected systems by hijacking TCP connections.
Technical Details of CVE-2021-37166
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The buffer overflow issue in the HMI3 Control Panel allows for denial of service attacks due to delays in GUI connection to the TCP socket.
Affected Systems and Versions
Versions of Nexus Software before 7.2.5.7 are impacted by this vulnerability, particularly in the Swisslog Healthcare Nexus Panel.
Exploitation Mechanism
The vulnerability arises during HMI3 startup, where it binds a local service to a TCP port on all device interfaces, providing an opportunity for external attackers to hijack the connection.
Mitigation and Prevention
To safeguard systems against CVE-2021-37166, immediate and long-term security measures are crucial.
Immediate Steps to Take
Implement network security measures to restrict unauthorized access and monitor for any abnormal TCP socket activities.
Long-Term Security Practices
Regularly update software to the latest versions, apply patches provided by the vendor, and ensure security configurations are optimized.
Patching and Updates
Stay informed about security advisories from Swisslog Healthcare and apply relevant patches promptly to mitigate the risk of exploitation.