CVE-2023-45044 in QuTS hero
Summary
by MITRE • 01/05/2024
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
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Analysis
by VulDB Data Team • 01/24/2024
This vulnerability represents a classic buffer overflow condition that arises from insufficient input validation during data copying operations within QNAP's operating systems. The flaw exists in the way the system handles user-supplied data during network-based administrative operations, specifically affecting the QTS and QuTS hero operating environments. The vulnerability is particularly concerning because it requires only authenticated access, meaning that an attacker with valid administrative credentials could exploit this weakness to execute arbitrary code on the affected systems. This type of vulnerability falls under the CWE-121 category of buffer overflow conditions, which is a well-documented and critical security weakness that has been exploited in numerous high-profile attacks. The attack vector specifically leverages network-based administrative interfaces, making it particularly dangerous for networked storage systems that are often accessible from multiple locations within enterprise environments.
The technical implementation of this vulnerability stems from improper bounds checking during memory copy operations, where the system fails to validate the size of incoming data before copying it into fixed-size buffers. This allows an attacker to potentially overwrite adjacent memory locations, leading to unpredictable behavior including code execution, system crashes, or data corruption. The authenticated nature of the exploit means that attackers would need valid administrative credentials, but this requirement is often achievable through credential theft, social engineering, or other initial compromise techniques that are commonly employed in targeted attacks against network storage infrastructure. The vulnerability affects multiple QNAP operating system variants, indicating a systemic issue within the codebase that requires comprehensive patching across all affected versions. According to the ATT&CK framework, this vulnerability would map to techniques involving privilege escalation and execution of malicious code, specifically leveraging the existing administrative access to gain further control over the compromised systems.
The operational impact of this vulnerability extends beyond simple code execution capabilities, as network storage systems often serve as critical infrastructure components within enterprise environments. These systems typically store vast amounts of sensitive data and may be integrated with various network services, making them attractive targets for attackers seeking to establish persistent access or move laterally within networks. The fact that this vulnerability affects both QTS and QuTS hero operating systems suggests that the underlying flaw exists in shared code components, potentially requiring coordinated patching across multiple product lines. Organizations utilizing QNAP storage solutions should prioritize immediate patching of affected systems to prevent exploitation, as the vulnerability could enable attackers to gain full administrative control over the storage infrastructure and potentially access sensitive data stored on these systems. The patch availability in versions 5.1.4.2596 build 20231128 and later indicates that QNAP has addressed the root cause through proper bounds checking implementations and input validation mechanisms. Security teams should conduct thorough vulnerability assessments to identify all instances of affected QNAP systems within their environments and ensure that patch deployment follows proper change management procedures to maintain system availability while addressing the identified security weakness.