CVE-2024-21906 in QTS
Summary
by MITRE • 09/06/2024
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 5.1.8.2823 build 20240712 and later QuTS hero h5.1.8.2823 build 20240712 and later
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Analysis
by VulDB Data Team • 09/20/2024
This vulnerability represents a critical operating system command injection flaw within QNAP's network attached storage solutions, specifically impacting the QNAP Turbo Server (QTS) and QuTS hero operating systems. The flaw allows authenticated administrative users to execute arbitrary commands remotely via network interfaces, creating a severe privilege escalation vector that could compromise entire storage infrastructures. The vulnerability's classification as an OS command injection aligns with CWE-77, which describes the injection of operating system commands through untrusted input sources. This type of vulnerability typically arises when applications fail to properly sanitize user inputs before executing system commands, creating pathways for malicious actors to manipulate the underlying operating system directly.
The technical exploitation of this vulnerability requires an authenticated administrative account, which significantly reduces the attack surface compared to unauthenticated exploits but still represents a critical risk given the elevated privileges such accounts possess. Attackers could leverage this flaw to execute malicious commands that could range from simple system reconnaissance to full system compromise, including data exfiltration, persistence mechanisms, and lateral movement within network environments. The vulnerability's impact extends beyond individual device compromise as storage servers often serve as central repositories for sensitive organizational data, making them prime targets for attackers seeking to establish persistent access or cause data breaches. This scenario aligns with ATT&CK technique T1059.001 for command and scripting interpreter, where adversaries execute commands through legitimate system interfaces.
The remediation efforts have been addressed through specific version updates that include patched code to properly validate and sanitize input parameters before system command execution. Organizations running affected QNAP systems must immediately upgrade to QTS 5.1.8.2823 build 20240712 or later, or QuTS hero h5.1.8.2823 build 20240712 or later to mitigate this risk. The vulnerability's exploitation potential makes immediate patching essential, as the timeframe for discovery and exploitation of such flaws typically follows a pattern where initial patches are released followed by rapid exploitation attempts. Security teams should also implement network monitoring to detect anomalous command execution patterns and consider implementing additional access controls or network segmentation to limit the potential impact of compromised administrative accounts. The vulnerability demonstrates the importance of proper input validation and the principle of least privilege in maintaining secure network infrastructure deployments.