CVE-2016-7806 in WFS-SR01
Summary
by MITRE
I-O DATA DEVICE WFS-SR01 firmware version 1.10 and earlier allow remote attackers to execute arbitrary OS commands via unspecified vectors.
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Analysis
by VulDB Data Team • 10/15/2019
The vulnerability identified as CVE-2016-7806 affects the I-O DATA DEVICE WFS-SR01 wireless firmware version 1.10 and earlier, representing a critical remote command execution flaw that enables attackers to gain unauthorized control over the device's operating system. This vulnerability falls under the category of command injection attacks where malicious actors can exploit unspecified vectors within the firmware to execute arbitrary operating system commands remotely without authentication. The affected device operates as a wireless access point or router, making it a prime target for network infiltration and lateral movement within compromised environments.
The technical implementation of this vulnerability stems from inadequate input validation and sanitization mechanisms within the firmware's web interface or network protocols. Attackers can manipulate input parameters through various attack vectors including HTTP requests, API calls, or network protocol interactions to inject malicious commands that get executed by the underlying operating system. This type of vulnerability is classified as CWE-77 in the Common Weakness Enumeration catalog, which specifically addresses command injection flaws that occur when a program constructs a system command by concatenating untrusted input from an external source without proper validation or sanitization. The vulnerability's remote exploitability means that attackers do not require physical access or local network presence to leverage this flaw, making it particularly dangerous for network infrastructure devices.
The operational impact of CVE-2016-7806 extends beyond simple unauthorized command execution to encompass complete system compromise and potential network infiltration. Once an attacker successfully exploits this vulnerability, they can gain full administrative privileges over the device, enabling them to modify network configurations, redirect traffic, establish backdoors, or use the compromised device as a pivot point for attacking other systems within the network. This vulnerability directly aligns with several techniques documented in the MITRE ATT&CK framework under the T1059.001 sub-technique for command and scripting interpreter, where adversaries execute commands on compromised systems. The device's role as a wireless access point creates additional risk as attackers can leverage the compromised device to intercept wireless communications, perform man-in-the-middle attacks, or establish persistent access points for unauthorized network users.
Organizations should immediately implement mitigation strategies including firmware updates from I-O DATA DEVICE to address the vulnerability, network segmentation to isolate affected devices, and enhanced monitoring of network traffic for suspicious command execution patterns. Network administrators should also consider implementing intrusion detection systems that can identify anomalous command execution attempts and establish network access controls that limit communication with the affected device. The vulnerability demonstrates the critical importance of firmware security and proper input validation in embedded systems, as highlighted by the NIST Cybersecurity Framework's focus on protecting against supply chain attacks and ensuring the integrity of network infrastructure components. Additionally, organizations should conduct comprehensive vulnerability assessments to identify other potentially affected devices within their network infrastructure that may share similar firmware vulnerabilities.