CVE-2019-6169 in Service Bridge
Summary
by MITRE
A vulnerability reported in Lenovo Service Bridge before version 4.1.0.1 could allow unencrypted downloads over FTP.
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Analysis
by VulDB Data Team • 10/08/2023
The vulnerability identified as CVE-2019-6169 affects Lenovo Service Bridge software versions prior to 4.1.0.1, representing a significant security weakness in the data transmission protocols used by this system management tool. This issue specifically manifests as the improper handling of file transfer operations that can result in unencrypted data being transmitted over the File Transfer Protocol. The vulnerability creates an attack surface that allows malicious actors to intercept sensitive information during the download process, potentially compromising the integrity and confidentiality of system configurations and diagnostic data.
This technical flaw falls under the category of inadequate cryptographic protection and represents a violation of fundamental security principles for data transmission. The vulnerability enables man-in-the-middle attacks where network traffic can be intercepted and potentially modified without detection. The use of unencrypted FTP connections exposes not only the downloaded files but also any authentication credentials or system information that might be transmitted during the download process. This weakness directly contravenes industry standards such as those outlined in CWE-319, which specifically addresses the exposure of sensitive information through improper use of network protocols. The vulnerability creates a persistent risk for organizations relying on Lenovo Service Bridge for system maintenance and diagnostics.
The operational impact of this vulnerability extends beyond simple data exposure, as it can enable attackers to gain unauthorized access to system configurations and potentially escalate privileges within the managed environment. Attackers can exploit this weakness to intercept firmware updates, system logs, and other sensitive diagnostic information that would normally be protected during transmission. The vulnerability affects the overall security posture of Lenovo Service Bridge implementations and can compromise the integrity of system management operations. Organizations using affected versions may face increased risk of supply chain attacks or targeted intrusions, particularly in environments where system diagnostics and firmware updates are regularly performed. This weakness can be particularly dangerous in enterprise environments where multiple systems are managed through centralized service bridge implementations.
Mitigation strategies for CVE-2019-6169 should prioritize immediate software updates to version 4.1.0.1 or later, which address the unencrypted FTP transmission issue through proper implementation of secure communication protocols. Organizations should also implement network monitoring solutions to detect and alert on suspicious FTP traffic patterns and consider deploying network segmentation measures to limit access to service bridge systems. The remediation process should include comprehensive vulnerability assessments of all affected Lenovo Service Bridge installations and verification that updated systems properly implement encrypted communication channels. Additionally, security teams should review and update their incident response procedures to account for potential exploitation of this vulnerability, as outlined in the attack patterns documented in the MITRE ATT&CK framework under the T1071.004 technique for application layer protocol usage. Organizations should also consider implementing mandatory secure communication policies for all system management tools and establish regular patch management processes to prevent similar vulnerabilities from arising in the future.