CVE-2023-0830 in EasyNAS
Summary
by MITRE • 02/14/2023
A vulnerability classified as critical has been found in EasyNAS 1.1.0. Affected is the function system of the file /backup.pl. The manipulation leads to os command injection. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. It is recommended to upgrade the affected component. VDB-220950 is the identifier assigned to this vulnerability.
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Analysis
by VulDB Data Team • 05/01/2025
The vulnerability identified as CVE-2023-0830 represents a critical os command injection flaw within EasyNAS 1.1.0 software, specifically affecting the system function within the /backup.pl file. This type of vulnerability falls under the CWE-77 category, which encompasses command injection weaknesses where attacker-controlled data is executed as operating system commands. The flaw exists in the backup.pl script that handles system backup operations, making it a prime target for exploitation during routine administrative tasks.
The technical implementation of this vulnerability allows remote attackers to inject malicious operating system commands through the system function call within the backup.pl file. When the application processes user-supplied input without proper sanitization or validation, it creates an environment where arbitrary commands can be executed with the privileges of the web application or system service. This remote exploitation capability means that attackers do not need physical access to the system, as the vulnerability can be triggered through network-based interactions with the vulnerable EasyNAS interface.
The operational impact of this vulnerability is severe and potentially catastrophic for affected organizations. Successful exploitation could enable attackers to execute arbitrary code on the target system, potentially leading to complete system compromise, data exfiltration, or lateral movement within the network. The remote nature of the attack means that threat actors can exploit this vulnerability from anywhere on the internet, making it particularly dangerous for network-attached storage systems that are often exposed to external networks. Organizations using EasyNAS 1.1.0 may face unauthorized access to sensitive data and potential disruption of critical backup operations.
Security mitigations for this vulnerability should prioritize immediate remediation through official software updates from the vendor, as recommended in the vulnerability disclosure. Organizations should implement network segmentation to limit access to EasyNAS devices, disable unnecessary services, and apply firewall rules to restrict access to the backup.pl endpoint. Additionally, implementing input validation controls, output encoding, and privilege separation can help reduce the attack surface. The vulnerability's classification as a critical threat aligns with ATT&CK technique T1059.001 for command and scripting interpreter, indicating that attackers may leverage this weakness to establish persistent access and conduct further reconnaissance activities. Regular security assessments and monitoring for anomalous system behavior should be implemented to detect potential exploitation attempts, while network traffic analysis can help identify malicious command injection attempts.