CVE-2023-41292 in QTS
Summary
by MITRE • 02/02/2024
A buffer copy without checking size of input vulnerability has been reported to affect several QNAP operating system versions. If exploited, the vulnerability could allow authenticated administrators to execute code via a network.
We have already fixed the vulnerability in the following versions: QTS 5.1.4.2596 build 20231128 and later QuTS hero h5.1.4.2596 build 20231128 and later QuTScloud c5.1.5.2651 and later
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Analysis
by VulDB Data Team • 02/25/2024
This vulnerability represents a classic buffer overflow condition that occurs when input data exceeds the allocated buffer size without proper validation. The flaw exists within QNAP's operating system implementations across multiple product lines including QTS, QuTS hero, and QuTScloud platforms. The vulnerability specifically affects authenticated administrator accounts, meaning that exploitation requires prior access to administrative credentials, which significantly impacts the attack surface but does not eliminate the severity of the issue. The buffer copy operation lacks size validation checks that would normally prevent copying data exceeding the buffer boundaries, creating a potential code execution pathway through network-based attacks. This type of vulnerability falls under CWE-121 which specifically addresses stack-based buffer overflow conditions and aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation would likely involve executing malicious code through the affected system's command processing mechanisms.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides a code execution vector that could be leveraged by attackers who have already gained administrative access to a system. While the requirement for administrative credentials limits initial access, the vulnerability creates a persistent threat vector that could be exploited for lateral movement, data exfiltration, or establishment of persistent backdoors within networked environments. The affected QNAP systems operate in enterprise and home network environments where they often serve as central storage and file sharing platforms, making them attractive targets for attackers seeking to establish long-term access to network resources. The vulnerability affects multiple product variants, indicating a systemic issue within the QNAP operating system architecture that requires comprehensive patching across all affected platforms to ensure complete protection. The timing of the vulnerability disclosure suggests that it was actively being exploited in the wild before the vendor released patches, which increases the urgency for immediate remediation.
The mitigation strategy involves immediate deployment of the vendor-provided patches for all affected versions including QTS 5.1.4.2596 build 20231128 and later, QuTS hero h5.1.4.2596 build 20231128 and later, and QuTScloud c5.1.5.2651 and later. Organizations should conduct thorough vulnerability assessments to identify all systems running affected QNAP operating system versions and ensure that patches are applied across all networked devices. Network segmentation and access control measures should remain in place as additional defensive layers, particularly given that the vulnerability requires administrative credentials for exploitation. System monitoring should be enhanced to detect unusual administrative activities that might indicate compromise, including unexpected code execution attempts or unusual network traffic patterns from affected systems. The vulnerability demonstrates the importance of input validation and bounds checking in security-critical code, particularly within operating system components that handle network communications and administrative functions. Organizations should also consider implementing automated patch management solutions to ensure timely deployment of security updates across all QNAP devices in their environment, as these types of vulnerabilities often represent the most common attack vectors for sophisticated adversaries targeting storage and file sharing platforms.