CVE-2023-23367 in QTS
Summary
by MITRE • 11/10/2023
An OS command injection vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to execute commands via a network.
We have already fixed the vulnerability in the following versions: QTS 5.0.1.2376 build 20230421 and later QuTS hero h5.0.1.2376 build 20230421 and later QuTScloud c5.1.0.2498 and later
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Analysis
by VulDB Data Team • 12/06/2023
The CVE-2023-23367 vulnerability represents a critical operating system command injection flaw within QNAP's network-attached storage solutions. This vulnerability specifically targets the QNAP Turbo Server (QTS) and related operating systems including QuTS hero and QuTScloud platforms. The flaw allows authenticated administrative users to execute arbitrary operating system commands through network-based attacks, effectively bypassing normal security controls that should prevent such privilege escalation. The vulnerability stems from insufficient input validation and sanitization within the web interface components that handle user-supplied data, creating a direct path for command injection attacks. Security researchers identified this issue during routine security assessments of QNAP's operating system implementations, highlighting the dangerous potential for authenticated attackers to gain unauthorized system access and execute malicious commands with administrative privileges.
The technical exploitation of this vulnerability occurs through the manipulation of input parameters within the QNAP web administration interface. When administrators interact with specific management functions, the system fails to properly sanitize user input before processing it within the operating system context. This creates a classic command injection scenario where attacker-controlled data can be interpreted and executed as system commands. The vulnerability specifically affects the handling of parameters related to network configuration and system management functions, where unfiltered input is directly passed to system execution functions. According to CWE-77 and CWE-88 standards, this represents a command injection flaw that allows attackers to execute arbitrary commands on the target system. The attack vector requires an authenticated administrative account, but once exploited, the attacker gains full system control capabilities. The vulnerability does not require special network conditions beyond standard administrative access, making it particularly dangerous in environments where administrative credentials might be compromised through other attack vectors.
The operational impact of CVE-2023-23367 extends beyond simple privilege escalation, as it provides attackers with complete system compromise capabilities. Successful exploitation allows attackers to execute arbitrary commands with root privileges, potentially leading to data exfiltration, system modification, or deployment of persistent backdoors. Organizations using affected QNAP systems face significant risk of unauthorized access to sensitive data stored on network-attached storage devices. The vulnerability affects multiple QNAP product lines including QTS, QuTS hero, and QuTScloud platforms, indicating a widespread issue within the QNAP ecosystem. Attackers could leverage this vulnerability to perform reconnaissance activities, install malware, modify system configurations, or establish persistent access points. The impact is particularly severe in enterprise environments where QNAP devices often serve as central storage repositories for critical business data, potentially exposing organizations to data breaches and regulatory compliance violations. According to ATT&CK framework category T1059, this vulnerability enables command and scripting interpreter techniques, allowing attackers to execute code at the system level.
Organizations must implement immediate remediation measures to address this vulnerability, primarily through updating to the patched versions specified in the security advisory. The affected versions include QTS 5.0.1.2376 build 20230421 and later, QuTS hero h5.0.1.2376 build 20230421 and later, and QuTScloud c5.1.0.2498 and later. System administrators should prioritize updating all affected QNAP devices across their network infrastructure, particularly those with administrative access to critical storage systems. Additional mitigation strategies include implementing network segmentation to limit administrative access to QNAP devices, enforcing strict access controls, and monitoring for suspicious administrative activities. Security teams should also consider deploying intrusion detection systems to monitor for potential exploitation attempts and establish incident response procedures for handling potential compromise scenarios. Regular vulnerability assessments and security audits of QNAP installations are essential to ensure continued protection against similar vulnerabilities. Organizations should also review their administrative access policies and implement principle of least privilege concepts to minimize the attack surface for such vulnerabilities. The remediation process should include comprehensive testing of updated systems to ensure compatibility and prevent service disruptions while maintaining security posture.