CVE-2023-34972 in QTS
Summary
by MITRE • 08/24/2023
A cleartext transmission of sensitive information vulnerability has been reported to affect QNAP operating systems. If exploited, the vulnerability possibly allows local network clients to read the contents of unexpected sensitive data via unspecified vectors.
We have already fixed the vulnerability in the following versions: QTS 5.0.1.2425 build 20230609 and later QTS 5.1.0.2444 build 20230629 and later QuTS hero h5.1.0.2424 build 20230609 and later
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Analysis
by VulDB Data Team • 09/20/2023
The vulnerability identified as CVE-2023-34972 represents a critical cleartext transmission flaw within QNAP operating systems that exposes sensitive data to unauthorized network clients within the same local network segment. This weakness falls under the category of information exposure vulnerabilities where confidential data is transmitted without proper encryption mechanisms, making it susceptible to interception by malicious actors who have network access. The vulnerability affects multiple QNAP operating system versions including QTS 5.0.1.2425 and later, QTS 5.1.0.2444 and later, and QuTS hero h5.1.0.2424 and later versions, indicating a widespread impact across the QNAP product line. The unspecified vectors through which the vulnerability can be exploited suggest that the flaw may manifest across various network services or protocols within the operating system, potentially including web interfaces, file sharing services, or administrative communication channels.
This vulnerability directly relates to CWE-319, which specifically addresses the exposure of sensitive information through cleartext transmission over networks. The technical implementation flaw appears to involve the lack of proper encryption mechanisms for data transmission between network clients and QNAP system components, allowing eavesdroppers to capture and read sensitive information without requiring advanced exploitation techniques. The local network client access requirement means that the attack vector is relatively accessible to adversaries who can position themselves within the same network segment, potentially through network sniffing or man-in-the-middle attacks. This type of vulnerability is particularly concerning in enterprise environments where QNAP devices often serve as storage servers, file sharing platforms, or network-attached storage solutions where they may handle confidential business data, user credentials, or system configuration information.
The operational impact of CVE-2023-34972 extends beyond simple data exposure, as the compromise of sensitive information could lead to further security breaches within the network infrastructure. Attackers who successfully exploit this vulnerability may gain access to authentication credentials, system configuration details, user data, or other confidential information that could be leveraged for lateral movement, privilege escalation, or additional attacks against other network components. The vulnerability's presence in multiple QNAP operating system versions suggests that organizations running these systems may be exposed to data interception attacks, potentially compromising the integrity and confidentiality of network communications. This exposure could result in regulatory compliance violations, financial losses, and damage to organizational reputation, particularly in environments where data protection regulations such as gdpr, hipaa, or other compliance frameworks are applicable.
Organizations should immediately implement mitigation strategies to address this vulnerability, including upgrading to the patched versions mentioned in the advisory. The recommended remediation involves deploying QTS 5.0.1.2425 build 20230609 or later, QTS 5.1.0.2444 build 20230629 or later, and QuTS hero h5.1.0.2424 build 20230609 or later versions. Additional protective measures should include network segmentation to limit local network access, implementation of network monitoring solutions to detect unusual traffic patterns, and regular security assessments to identify potential exploitation attempts. The vulnerability's classification under ATT&CK technique T1041 suggests that network traffic interception and data manipulation may be possible, making network traffic analysis and encryption enforcement critical defensive measures. Security teams should also consider implementing additional controls such as mandatory encryption for all network communications, regular vulnerability scanning of QNAP devices, and establishing incident response procedures specifically addressing cleartext transmission vulnerabilities to ensure rapid response to any exploitation attempts.