CVE-2019-13652 in M7350
Summary
by MITRE
TP-Link M7350 devices through 1.0.16 Build 181220 Rel.1116n allow serviceName OS Command Injection (issue 4 of 5).
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Analysis
by VulDB Data Team • 01/27/2024
The TP-Link M7350 device vulnerability represents a critical operating system command injection flaw that affects firmware versions through 1.0.16 Build 1.0.16 Build 181220 Rel.1116n. This vulnerability resides within the device's service name parameter handling mechanism, where insufficient input validation allows malicious actors to inject arbitrary operating system commands. The issue manifests as part of a broader set of five vulnerabilities, with this particular flaw classified as a command injection attack vector that can be exploited to execute unauthorized system operations.
The technical implementation of this vulnerability stems from improper sanitization of user-supplied input within the device's web interface configuration handlers. When administrators or users interact with the device's management interface, the serviceName parameter fails to properly validate or escape special characters that could be interpreted by the underlying operating system shell. This allows attackers to craft malicious payloads that bypass normal input validation checks and execute arbitrary commands with the privileges of the web server process. The vulnerability specifically affects the device's handling of service names during configuration operations, where command injection occurs when the system processes these parameters without adequate sanitization.
The operational impact of this vulnerability extends beyond simple command execution, as it provides attackers with potential access to the device's underlying operating system and network interfaces. Successful exploitation could enable attackers to modify device configurations, establish persistent backdoors, access sensitive network data, or use the compromised device as a pivot point for attacking other systems within the local network. The vulnerability affects the device's ability to maintain network security boundaries and can lead to complete device compromise, potentially enabling attackers to gain unauthorized access to connected network resources and sensitive information. This risk is particularly significant in enterprise environments where such devices may serve as network access points or security gateways.
Mitigation strategies for this vulnerability should include immediate firmware updates from TP-Link to address the command injection flaw, along with network segmentation and access control measures to limit exposure. Organizations should implement network monitoring to detect suspicious command execution patterns and establish secure configuration practices for all network devices. The vulnerability aligns with CWE-77 and CWE-78 categories from the Common Weakness Enumeration, specifically addressing improper input validation and command injection weaknesses. From an attack perspective, this vulnerability maps to ATT&CK techniques including T1059 for command and scripting interpreter and T1021 for remote services, emphasizing the need for robust input validation and privilege separation in network device implementations.