CVE-2019-6178 in LenovoEMC NAS
Summary
by MITRE
An information leakage vulnerability in Iomega and LenovoEMC NAS products could allow disclosure of some device details such as Share names through the device API when Personal Cloud is enabled. This does not allow read, write, delete, or any other access to the underlying file systems and their contents.
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Analysis
by VulDB Data Team • 11/26/2023
The vulnerability identified as CVE-2019-6178 represents an information disclosure flaw affecting Iomega and LenovoEMC network-attached storage devices that utilize the Personal Cloud feature. This security weakness resides within the device application programming interface where sensitive operational details become accessible through unauthorized disclosure. The vulnerability specifically impacts devices running the Personal Cloud service, which is a feature designed to enable remote access and sharing capabilities for network-attached storage systems.
The technical nature of this flaw stems from improper access controls within the device's API implementation. When Personal Cloud is enabled, the system inadvertently exposes share names and other device metadata through API responses without adequate authentication or authorization checks. This information leakage occurs at the application layer where the device fails to properly validate requests or restrict access to sensitive configuration information. The vulnerability manifests as a failure in the principle of least privilege where system details that should remain restricted are made available to unauthorized parties through the API interface.
From an operational perspective, while this vulnerability does not provide direct access to file system contents, the information disclosure creates significant security implications for network-attached storage deployments. Attackers who can access the API endpoint could potentially map network shares, identify available storage volumes, and gather intelligence about the storage configuration. This reconnaissance capability enables more sophisticated attacks by providing attackers with knowledge about the target environment's structure and available resources. The exposure of share names and device details can facilitate social engineering attacks or help attackers plan more targeted exploitation strategies against the storage infrastructure.
The vulnerability aligns with CWE-200, which addresses information exposure, and represents a classic case of insufficient access control mechanisms. According to ATT&CK framework, this weakness maps to T1083 (File and Directory Discovery) and T1592 (Asset Discovery) as it enables adversaries to gather information about network resources and storage configurations. The impact of this vulnerability extends beyond simple information disclosure since it provides attackers with operational intelligence that can be leveraged in subsequent attack phases. Organizations using affected Iomega and LenovoEMC devices should consider this vulnerability as part of a broader reconnaissance effort that could lead to more serious security incidents.
Mitigation strategies should focus on implementing proper API access controls and authentication mechanisms for the Personal Cloud feature. Network administrators should disable Personal Cloud functionality when not required or implement additional access controls to restrict API access to trusted sources. Regular security assessments of network-attached storage systems should include API endpoint scanning to identify similar information disclosure vulnerabilities. Device firmware updates from vendors should be applied promptly to address the root cause of the information leakage. Organizations should also implement network segmentation to limit access to storage devices and monitor API access patterns for unusual activity that might indicate exploitation attempts. The vulnerability demonstrates the importance of securing all network interfaces and API endpoints within storage infrastructure to prevent unauthorized information disclosure that could compromise overall security posture.