CVE-2018-14748 in QTS
Summary
by MITRE
Improper Authorization vulnerability in QTS 4.3.5 build 20181013, QTS 4.3.4 build 20181008, QTS 4.3.3 build 20180829, QTS 4.2.6 build 20180829 and earlier versions could allow remote attackers to power off the NAS.
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Analysis
by VulDB Data Team • 04/15/2020
The vulnerability identified as CVE-2018-14748 represents a critical improper authorization flaw within QTS operating systems for network-attached storage devices. This weakness affects multiple versions including QTS 4.3.5 build 20181013, 4.3.4 build 20181008, 4.3.3 build 20180829, 4.2.6 build 20180829, and earlier releases. The vulnerability stems from insufficient access controls that fail to properly validate user permissions before executing critical system operations. Attackers can exploit this weakness to remotely power off NAS devices without proper authentication, effectively compromising the availability and operational integrity of network storage infrastructure. This issue falls under CWE-285, which specifically addresses improper authorization mechanisms in software systems. The vulnerability demonstrates a fundamental flaw in the authorization model where system-level commands bypass standard authentication procedures, creating a direct path for unauthorized remote execution of critical operations.
The technical implementation of this vulnerability involves the failure of proper authentication checks within the QTS system's power management interfaces. Remote attackers can send specially crafted network requests that trigger system shutdown commands without requiring valid credentials or administrative privileges. The flaw likely exists in the web-based management interface or API endpoints that handle power control operations, where input validation and access control mechanisms are either absent or inadequately implemented. This misconfiguration allows any remote attacker to exploit the system through standard network protocols, potentially leading to complete service disruption. The vulnerability is particularly concerning because it operates at the system level rather than application level, meaning it affects core operating system functions rather than just user applications. According to ATT&CK framework, this represents a privilege escalation and denial of service technique under the T1068 and T1499 categories, where attackers can leverage insufficient authorization controls to gain unauthorized system access and disrupt operations.
The operational impact of CVE-2018-14748 extends beyond simple service interruption to encompass complete system compromise and potential data loss scenarios. Organizations relying on QTS-based NAS solutions face significant risks including unauthorized data access, service disruption during critical business operations, and potential exploitation for further attacks within network environments. The vulnerability creates a persistent threat vector where attackers can repeatedly power off systems, potentially causing data corruption or loss if systems shut down during critical operations. Network administrators may experience unauthorized access to system management functions, leading to potential configuration changes or data manipulation. The remote nature of the attack means that organizations cannot rely on physical security measures alone, as the vulnerability can be exploited from anywhere on the internet. This flaw particularly affects enterprises with distributed storage solutions, as it allows attackers to target multiple NAS devices simultaneously across different geographical locations, amplifying the potential damage and operational disruption.
Mitigation strategies for this vulnerability require immediate implementation of network segmentation and access control measures. Organizations should deploy firewalls and network access control lists to restrict access to QTS management interfaces, limiting access to trusted IP addresses and networks only. System administrators must ensure that all affected QTS versions are updated to the latest patches provided by the vendor, which typically include enhanced authorization checks and input validation. Additional protective measures include disabling unnecessary network services, implementing strong authentication mechanisms, and conducting regular security audits of network storage configurations. The implementation of intrusion detection systems can help monitor for suspicious network traffic patterns associated with exploitation attempts. Organizations should also establish incident response procedures specifically addressing unauthorized system shutdown events and implement logging mechanisms to track all power management operations. Security monitoring should include checks for unauthorized access attempts to system-level functions and regular vulnerability assessments to identify similar authorization flaws in other network infrastructure components. The remediation process should follow industry standards including NIST SP 800-53 controls for access control and system security configuration management.