CVE-2016-1139 in Home Spot Cube
Summary
by MITRE
Cross-site request forgery (CSRF) vulnerability on KDDI HOME SPOT CUBE devices before 2 allows remote attackers to hijack the authentication of unspecified victims via unknown vectors.
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Analysis
by VulDB Data Team • 07/11/2018
The CVE-2016-1139 vulnerability represents a critical cross-site request forgery flaw affecting KDDI HOME SPOT CUBE wireless devices running firmware versions prior to 2. This vulnerability resides within the device's web-based administrative interface and operates as a CSRF attack vector that enables remote threat actors to manipulate the device's authentication state without proper authorization. The flaw specifically impacts the device's session management mechanisms, allowing attackers to execute unauthorized administrative commands on behalf of legitimate users who are authenticated to the device's web interface.
The technical nature of this vulnerability stems from insufficient validation of request origins and lack of proper anti-CSRF token implementation within the device's web server responses. When a victim accesses a malicious website or receives a crafted email with embedded links, the attacker can leverage the victim's existing authenticated session to perform administrative actions on the affected device. This occurs because the device fails to verify that requests originate from legitimate sources within the same domain or that appropriate anti-CSRF tokens are present in each transaction. The vulnerability manifests as a failure to implement proper request origin verification, which is a fundamental security control outlined in the OWASP Top Ten and CWE-352.
The operational impact of this vulnerability extends beyond simple unauthorized access, as it provides attackers with complete administrative control over the affected wireless devices. This includes the ability to modify network configurations, change passwords, disable security features, and potentially establish persistent backdoors within the device's network infrastructure. The threat actor can exploit this vulnerability remotely without requiring physical access or prior authentication credentials, making it particularly dangerous in residential and small office environments where such devices are commonly deployed. The attack vector demonstrates the importance of proper session management and the implementation of anti-CSRF protections in web applications, as detailed in the MITRE ATT&CK framework under the credential access and privilege escalation categories.
Mitigation strategies for this vulnerability require immediate firmware updates from KDDI to address the CSRF implementation flaws within the device's web interface. Network administrators should also implement additional security controls such as network segmentation to isolate these devices from critical network segments, disable unnecessary web management interfaces when not actively needed, and employ network monitoring solutions to detect unusual administrative activity patterns. The vulnerability highlights the critical need for proper input validation and origin checking in web applications, aligning with CWE-352 standards for CSRF protection and emphasizing the necessity of implementing anti-CSRF tokens in all state-changing operations. Organizations should also conduct regular vulnerability assessments of networked devices to identify similar implementation flaws in other IoT and network infrastructure equipment that may be susceptible to similar attacks.