CVE-2016-1137 in Home Spot Cube
Summary
by MITRE
Open redirect vulnerability on KDDI HOME SPOT CUBE devices before 2 allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via unspecified vectors.
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Analysis
by VulDB Data Team • 07/11/2018
The vulnerability identified as CVE-2016-1137 represents a critical open redirect flaw discovered in KDDI HOME SPOT CUBE devices prior to a specific firmware version. This security weakness enables remote attackers to manipulate user navigation by redirecting them to malicious websites without their knowledge or consent. The vulnerability stems from insufficient validation of redirect parameters within the device's web interface, creating an exploitable condition that can be leveraged for various malicious activities including phishing campaigns and credential theft.
The technical implementation of this vulnerability involves the device's web server failing to properly sanitize or validate redirect URLs that are passed through user input parameters. Attackers can craft malicious URLs containing crafted redirect parameters that, when clicked by an unsuspecting user, will automatically redirect them to attacker-controlled domains. This flaw operates at the application layer and can be exploited through web-based interfaces that the device provides for configuration and management purposes. The vulnerability is classified under CWE-601 as an open redirect vulnerability, which specifically addresses the issue of web applications redirecting users to untrusted domains without proper validation.
The operational impact of this vulnerability extends beyond simple redirection, as it provides attackers with a sophisticated vector for conducting social engineering attacks. Users who visit compromised pages may be unknowingly redirected to phishing sites designed to capture login credentials, personal information, or financial data. The attack surface is particularly concerning because the KDDI HOME SPOT CUBE devices are typically deployed in residential environments, making them accessible to a broad range of users who may not possess advanced cybersecurity awareness. This vulnerability effectively undermines the security posture of the entire network, as successful exploitation can lead to unauthorized access to the device's administrative interface and potentially compromise the broader home network.
The exploitation of this vulnerability aligns with several techniques documented in the MITRE ATT&CK framework, particularly under the T1566 category for Phishing and T1071 for Application Layer Protocol usage. Attackers can leverage this weakness to create convincing phishing campaigns by redirecting users through legitimate-looking device management interfaces before redirecting them to malicious sites. The vulnerability's persistence across multiple firmware versions indicates a fundamental design flaw in the device's input validation mechanisms, making it particularly dangerous as it affects a wide range of deployed devices. Security professionals should consider this vulnerability as part of a broader assessment of IoT device security, as it demonstrates how seemingly minor input validation issues can create significant security risks in networked devices. Organizations and individuals should immediately implement firmware updates and network monitoring to detect potential exploitation attempts, while also educating users about recognizing suspicious redirects and phishing attempts that may be initiated through this vulnerability.