CVE-2023-34441 in Bently Nevada 3500
Summary
by MITRE • 10/25/2023
Baker Hughes – Bently Nevada 3500 System TDI Firmware version 5.05 contains a cleartext transmission vulnerability which could allow an attacker to steal the authentication secret from communication traffic to the device and reuse it for arbitrary requests.
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Analysis
by VulDB Data Team • 10/25/2023
The vulnerability identified as CVE-2023-34441 affects the Bently Nevada 3500 System TDI firmware version 5.05 manufactured by Baker Hughes. This issue represents a critical security flaw that undermines the integrity of device communications and authentication mechanisms. The affected system operates within industrial environments where continuous monitoring and control of critical infrastructure components are essential for operational safety and efficiency. The TDI (Transducer Interface) system serves as a crucial bridge between sensors and control systems, making its security paramount for overall industrial cybersecurity posture.
The technical flaw manifests as a cleartext transmission vulnerability that exposes authentication secrets during network communication with the device. This vulnerability stems from the firmware's failure to implement proper encryption mechanisms for sensitive data transmission. When authentication credentials or secret tokens are transmitted over the network, they are sent in an unencrypted format, making them susceptible to interception by malicious actors. The cleartext nature of these communications creates an environment where attackers can easily capture authentication tokens through network sniffing or man-in-the-middle attacks. This vulnerability directly maps to CWE-312, which specifically addresses the exposure of sensitive information through cleartext transmission, and aligns with ATT&CK technique T1071.004 for application layer protocol: DNS, where attackers can leverage such weaknesses to intercept and reuse authentication credentials for unauthorized access.
The operational impact of this vulnerability extends beyond simple credential theft, as it fundamentally compromises the security model of the entire system. An attacker who successfully intercepts the authentication secret can reuse it to make arbitrary requests to the device, potentially gaining full administrative control over the system. This capability allows for unauthorized configuration changes, data manipulation, and potential disruption of critical monitoring processes. The implications are particularly severe in industrial control systems where the TDI device interfaces with safety-critical equipment and sensors. The vulnerability creates opportunities for attackers to modify sensor readings, disable protective systems, or cause operational disruptions that could lead to physical safety hazards or significant financial losses.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The primary recommendation involves implementing encryption protocols such as TLS or SSL for all network communications with the device to prevent cleartext transmission of authentication credentials. Organizations should also enforce network segmentation and access controls to limit exposure of the affected systems to unauthorized networks. Regular firmware updates and patch management procedures must be established to ensure timely remediation of known vulnerabilities. Additionally, network monitoring should be enhanced to detect suspicious traffic patterns and potential credential interception attempts. The implementation of multi-factor authentication mechanisms and regular credential rotation practices would further strengthen the security posture against this type of attack vector. Organizations should also consider conducting security assessments and penetration testing to validate the effectiveness of implemented controls and identify any additional vulnerabilities in their industrial control system environments.