CVE-2018-14746 in QTS
Summary
by MITRE
Command Injection 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 run arbitrary commands on the NAS.
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Analysis
by VulDB Data Team • 04/15/2020
The CVE-2018-14746 vulnerability represents a critical command injection flaw discovered in QTS operating systems used on Network Attached Storage devices. This vulnerability 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, indicating a widespread issue across the QTS platform. The vulnerability stems from insufficient input validation within the system's command execution mechanisms, allowing malicious actors to inject and execute arbitrary commands on affected NAS devices.
This command injection vulnerability operates at the core of the QTS operating system's security architecture, where user inputs are improperly sanitized before being processed by system commands. Attackers can exploit this weakness by crafting malicious payloads that bypass authentication mechanisms and directly interface with the underlying operating system commands. The vulnerability's impact is particularly severe because it enables remote code execution without requiring legitimate credentials, making it an attractive target for attackers seeking unauthorized access to network storage systems. The flaw essentially allows attackers to escalate privileges and gain complete control over the affected NAS devices, potentially compromising all stored data and network resources.
From an operational perspective, the implications of CVE-2018-14746 extend beyond simple unauthorized access to encompass complete system compromise and data exfiltration capabilities. The vulnerability creates a persistent backdoor that attackers can use to maintain long-term access to network storage environments, potentially leading to extended data breaches and lateral movement within corporate networks. Organizations using QTS-based NAS systems face significant risk of data loss, unauthorized data access, and potential regulatory compliance violations. The remote nature of the exploit means that attackers can target vulnerable systems from anywhere on the internet, making traditional network perimeter defenses insufficient for protection.
Security professionals should note that this vulnerability aligns with CWE-77 and CWE-88 categories, which specifically address command injection flaws in software systems. The attack patterns associated with this vulnerability map directly to MITRE ATT&CK techniques such as T1059.001 for command and scripting interpreter and T1021.002 for remote services. Organizations should implement immediate mitigations including firmware updates from QNAP, network segmentation to isolate affected devices, and monitoring for suspicious command execution patterns. Additionally, deploying web application firewalls and implementing strict input validation controls can help reduce the attack surface. The vulnerability underscores the critical importance of regular security assessments and prompt patch management for enterprise storage infrastructure, particularly when dealing with systems that handle sensitive organizational data.