CVE-2018-0707 in Q'center Virtual Appliance
Summary
by MITRE
Command injection vulnerability in change password of QNAP Q'center Virtual Appliance version 1.7.1063 and earlier could allow authenticated users to run arbitrary commands.
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Analysis
by VulDB Data Team • 09/14/2024
The CVE-2018-0707 vulnerability represents a critical command injection flaw within the QNAP Q'center Virtual Appliance software ecosystem. This vulnerability specifically targets the password change functionality of the virtual appliance version 1.7.1063 and earlier, creating a pathway for authenticated attackers to execute arbitrary commands on the underlying system. The issue stems from insufficient input validation and sanitization within the password change module, allowing maliciously crafted input to be interpreted as system commands rather than simple password data. This vulnerability is particularly concerning as it requires only authenticated access to the system, meaning that an attacker who has already gained valid credentials can escalate their privileges and execute arbitrary code with the privileges of the affected service account.
The technical exploitation of this vulnerability occurs when an authenticated user submits specially crafted input through the password change interface. The system fails to properly sanitize or validate the input parameters, allowing command injection payloads to be executed within the context of the application. This flaw aligns with CWE-77 which specifically addresses command injection vulnerabilities where untrusted data is incorporated into system commands without proper sanitization. The vulnerability exists at the application layer where user input is directly processed and executed, bypassing normal security controls and validation mechanisms that should prevent such malicious code execution. Attackers can leverage this weakness to gain unauthorized access to system resources, potentially leading to complete system compromise.
The operational impact of CVE-2018-0707 extends beyond simple privilege escalation, as it provides attackers with the ability to execute arbitrary commands on the affected appliance. This capability enables attackers to manipulate system files, install malware, establish persistence mechanisms, and potentially use the compromised appliance as a launch point for further attacks within the network. The vulnerability affects organizations using QNAP Q'center Virtual Appliance deployments, which are commonly used for virtualization management and storage solutions. From an ATT&CK framework perspective, this vulnerability maps to techniques such as T1059 Command and Scripting Interpreter and T1068 Exploitation for Privilege Escalation, demonstrating how authenticated access can be leveraged to achieve broader operational objectives. The impact is particularly severe for organizations that rely on QNAP appliances for critical infrastructure management, as the compromise of these systems can lead to data breaches, service disruption, and compliance violations.
Organizations should implement immediate mitigations including updating to the latest version of QNAP Q'center Virtual Appliance where the vulnerability has been patched. The vendor released updates addressing this specific command injection flaw, and administrators should prioritize deployment of these patches across all affected systems. Additional defensive measures include implementing network segmentation to limit access to the appliance, enforcing strict access controls, and monitoring for unusual command execution patterns. Security teams should also conduct comprehensive vulnerability assessments to identify any other potentially affected systems within their environment. The vulnerability highlights the importance of proper input validation and sanitization practices, emphasizing the need for secure coding standards and regular security testing. Organizations should consider implementing web application firewalls and intrusion detection systems to monitor for exploitation attempts and prevent successful command injection attacks. Regular security awareness training for administrators can also help prevent unauthorized access that might lead to exploitation of such vulnerabilities.