CVE-2018-0730 in QTS
Summary
by MITRE
This command injection vulnerability in File Station allows attackers to execute commands on the affected device. To fix the vulnerability, QNAP recommend updating QTS to their latest versions.
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Analysis
by VulDB Data Team • 03/07/2024
The CVE-2018-0730 vulnerability represents a critical command injection flaw within QNAP's File Station component that enables remote attackers to execute arbitrary commands on affected devices. This vulnerability exists due to insufficient input validation and sanitization within the file sharing application, allowing malicious actors to inject and execute system commands through improperly filtered user inputs. The flaw specifically impacts QNAP QTS (QNAP Turbo Server) operating systems and affects various QNAP NAS (Network Attached Storage) devices that utilize the File Station functionality. The vulnerability was identified by QNAP during routine security assessments and subsequently documented in their security advisory.
The technical implementation of this command injection vulnerability stems from improper handling of user-supplied data within the File Station's file management functions. Attackers can exploit this weakness by crafting malicious input parameters that bypass normal validation checks and directly interface with underlying system commands. This flaw falls under the CWE-77 category of Command Injection, which is classified as a high-severity vulnerability in the Common Weakness Enumeration catalog. The vulnerability allows attackers to execute commands with the privileges of the File Station service account, potentially escalating to full system compromise depending on the underlying system configuration and permissions. The attack vector typically involves sending specially crafted HTTP requests to the File Station web interface, where the vulnerable input parameters are processed without adequate sanitization.
The operational impact of CVE-2018-0730 extends beyond simple command execution, as it provides attackers with significant system access capabilities that can lead to complete network compromise. An attacker who successfully exploits this vulnerability can gain unauthorized access to files stored on the NAS device, potentially accessing sensitive corporate data, personal information, or intellectual property. The vulnerability also enables attackers to install malware, create backdoors, modify system configurations, or use the compromised device as a pivot point for attacking other systems within the local network. This makes the vulnerability particularly dangerous in enterprise environments where NAS devices often serve as central data repositories and may contain critical business information. The impact is further amplified by the fact that many organizations may not regularly update their QNAP devices, leaving them vulnerable to exploitation for extended periods.
QNAP's recommended remediation approach involves updating to the latest QTS versions that contain patches addressing the command injection vulnerability. This update mechanism follows standard security patch management practices and aligns with the MITRE ATT&CK framework's remediation recommendations for command injection threats. Organizations should prioritize applying these updates as part of their vulnerability management processes, ensuring that all affected QNAP devices receive the necessary security patches. Additional mitigations include implementing network segmentation to limit access to NAS devices, restricting administrative access to authorized personnel only, and monitoring network traffic for suspicious activity that might indicate exploitation attempts. Security teams should also consider implementing web application firewalls to detect and block malicious input patterns targeting this vulnerability, as well as conducting regular vulnerability assessments to identify other potential command injection points within their network infrastructure.