CVE-2018-13320 in TS5600D1206
Summary
by MITRE
System Command Injection in network.set_auth_settings in Buffalo TS5600D1206 version 3.70-0.10 allows attackers to execute system commands via the adminUsername and adminPassword parameters.
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Analysis
by VulDB Data Team • 04/14/2020
This vulnerability represents a critical system command injection flaw in Buffalo's network authentication settings functionality. The issue exists within the network.set_auth_settings API endpoint of the TS5600D1206 device running firmware version 3.70-0.10, where attacker-controlled input values are not properly sanitized before being processed by the underlying system. The vulnerability specifically affects the adminUsername and adminPassword parameters, which are directly incorporated into system commands without adequate input validation or escaping mechanisms.
The technical exploitation of this vulnerability follows a command injection pattern where malicious input can be crafted to execute arbitrary system commands with the privileges of the affected service. When an attacker submits specially crafted values in the adminUsername or adminPassword fields, these inputs are concatenated directly into shell commands without proper sanitization, allowing for command chaining and arbitrary code execution. This type of vulnerability maps to CWE-77 and CWE-88 within the Common Weakness Enumeration framework, representing improper neutralization of special elements used in command execution.
The operational impact of this vulnerability is severe as it provides attackers with full system command execution capabilities on the affected device. An attacker could potentially gain complete control over the network storage device, including access to stored data, modification of network configurations, and execution of malicious payloads. The vulnerability affects the device's authentication subsystem, which means that successful exploitation could lead to unauthorized access to network resources and potential lateral movement within the network infrastructure. This represents a significant risk for enterprise environments where such devices may serve as network storage solutions or gateway appliances.
Mitigation strategies should include immediate firmware updates from Buffalo to address the command injection vulnerability, along with network segmentation to limit access to administrative interfaces. Access controls should be implemented to restrict administrative access to trusted networks only, and input validation should be strengthened to prevent special characters from being passed to system commands. Organizations should also implement network monitoring to detect suspicious command execution patterns and consider implementing web application firewalls to filter malicious payloads. The vulnerability demonstrates the importance of proper input sanitization and the principle of least privilege in network device security, aligning with ATT&CK technique T1059 for command and scripting interpreter and T1068 for exploit for privilege escalation.