CVE-2017-9980 in DX-350
Summary
by MITRE
In Green Packet DX-350 Firmware version v2.8.9.5-g1.4.8-atheeb, the "PING" (aka tag_ipPing) feature within the web interface allows performing command injection, via the "pip" parameter.
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Analysis
by VulDB Data Team • 10/31/2019
The vulnerability identified as CVE-2017-9980 affects the Green Packet DX-350 network device firmware version v2.8.9.5-g1.4.8-atheeb and represents a critical command injection flaw within the device's web interface. This vulnerability specifically targets the PING functionality, which is implemented through a feature known as tag_ipPing. The flaw manifests when the device processes the "pip" parameter without proper input validation or sanitization, creating an opportunity for malicious actors to execute arbitrary commands on the affected system. The vulnerability falls under the CWE-77 category, which specifically addresses command injection vulnerabilities where user-supplied data is directly incorporated into system commands without adequate filtering or escaping mechanisms.
The operational impact of this vulnerability is severe as it allows remote attackers to gain unauthorized access to the device's underlying operating system through the web interface. Attackers can leverage the command injection flaw to execute malicious commands with the privileges of the web server process, potentially leading to complete system compromise. This vulnerability enables attackers to perform actions such as reading sensitive files, modifying system configurations, installing backdoors, or even escalating privileges to root access depending on the device's implementation. The attack surface is particularly concerning as it requires no authentication for exploitation, making it accessible to anyone who can reach the device's web interface, and the attack can be executed through simple HTTP requests that include malicious command payloads in the pip parameter.
Security practitioners should consider this vulnerability in the context of the ATT&CK framework's command and control techniques, where adversaries establish persistent access through command injection attacks. The vulnerability also aligns with the MITRE ATT&CK technique T1059.001 for command and script interpreter, specifically targeting the execution of system commands through web interfaces. Organizations should immediately implement network segmentation to isolate critical network devices from general network access and ensure that the affected firmware version is updated to a patched release. Additional mitigations include implementing web application firewalls to monitor and filter incoming requests, disabling unnecessary web interface features, and conducting thorough network scans to identify other potentially vulnerable devices. The vulnerability demonstrates the importance of proper input validation and output encoding practices in web applications, particularly for network devices that expose administrative interfaces to potentially untrusted networks. Security monitoring should include detection of unusual command execution patterns and unauthorized access attempts to network device management interfaces, as these may indicate exploitation attempts targeting similar command injection vulnerabilities across the network infrastructure.