CVE-2016-8230 in Service Bridge
Summary
by MITRE
In Lenovo Service Bridge before version 4, an insecure HTTP connection is used by LSB to send system serial number, machine type and model and product name to Lenovo's servers.
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Analysis
by VulDB Data Team • 10/13/2019
The vulnerability identified as CVE-2016-8230 affects Lenovo Service Bridge versions prior to 4.0, representing a critical security flaw in how the software handles network communications with Lenovo's servers. This issue stems from the application's reliance on insecure HTTP connections rather than secure HTTPS protocols for transmitting sensitive system information. The vulnerability exposes system metadata including serial numbers, machine types, model identifiers, and product names to potential interception and manipulation during transmission. From a cybersecurity perspective, this represents a significant weakness in the principle of least privilege and secure communication practices that should be fundamental to all enterprise software solutions. The insecure transmission of such identifying information creates opportunities for attackers to gather intelligence about target systems and potentially plan more sophisticated attacks.
The technical flaw manifests in the improper implementation of network security protocols within Lenovo Service Bridge, where HTTP connections are utilized instead of encrypted HTTPS channels. This design decision violates fundamental security best practices and creates a man-in-the-middle attack vector where network traffic can be easily intercepted and analyzed. The vulnerability directly maps to CWE-319, which addresses the exposure of sensitive information through inadequate encryption or transmission security. Additionally, this flaw aligns with ATT&CK technique T1046, as it enables adversaries to gather system information through network reconnaissance activities that would otherwise be protected by secure communication channels.
The operational impact of this vulnerability extends beyond simple information disclosure, as the transmitted system metadata provides attackers with valuable intelligence for targeting specific hardware configurations and potentially identifying systems running vulnerable versions of Lenovo Service Bridge. The exposure of serial numbers and machine types allows for more precise targeting of specific device models that may have additional vulnerabilities or known exploits. Organizations using affected versions of Lenovo Service Bridge face increased risk of targeted attacks, as the transmitted information can be leveraged for supply chain attacks or to identify systems that may be running outdated firmware or software components. This vulnerability particularly impacts enterprise environments where multiple Lenovo devices may be communicating with Lenovo's servers, creating a potential attack surface that extends across entire organizational networks.
The recommended mitigation strategy involves immediate upgrading to Lenovo Service Bridge version 4.0 or later, which implements secure HTTPS connections for all communications with Lenovo's servers. Organizations should also conduct comprehensive network monitoring to detect any potential exploitation attempts and implement network segmentation to limit the impact of any successful attacks. Security teams should review and update their network security policies to ensure that all software components utilize encrypted communication channels by default. Additionally, system administrators should consider implementing network intrusion detection systems that can identify and alert on insecure HTTP traffic patterns that may indicate exploitation attempts. The vulnerability serves as a reminder of the critical importance of secure communication protocols and the need for regular security updates to protect against evolving threats in enterprise computing environments.