CVE-2015-5630 in Broadband Platform Japan Connected-free Wi-Fi Application
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the NTT Broadband Platform Japan Connected-free Wi-Fi application 1.6.0 and earlier for Android and 1.0.2 and earlier for iOS allows remote attackers to inject arbitrary web script or HTML via a crafted SSID.
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Analysis
by VulDB Data Team • 12/15/2017
The vulnerability identified as CVE-2015-5630 represents a critical cross-site scripting flaw within the NTT Broadband Platform Japan Connected-free Wi-Fi application ecosystem. This security weakness affects both Android and iOS platforms, with specific versions impacted including Android 1.6.0 and earlier, as well as iOS 1.0.2 and earlier versions of the mobile application. The vulnerability stems from insufficient input validation and sanitization mechanisms within the application's handling of Service Set Identifier (SSID) data, which is a fundamental component of wireless network identification. The flaw allows malicious actors to exploit the application's failure to properly escape or validate user-supplied SSID information, creating an avenue for arbitrary code execution through web script injection.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious SSID string containing embedded JavaScript or HTML code and broadcasts it through a wireless network. When the vulnerable application processes this crafted SSID for display or storage purposes, the malicious code executes within the context of the user's browser session, bypassing standard security boundaries. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws, where the application fails to properly validate or escape user-controllable data before incorporating it into dynamically generated web content. The attack vector leverages the application's trust in network identification data without adequate sanitization, creating a persistent security risk that affects all users who encounter the malicious SSID within the application's scope.
The operational impact of this vulnerability extends beyond simple script injection, potentially enabling sophisticated attack scenarios that could compromise user privacy and system integrity. Attackers could leverage this vulnerability to steal session cookies, redirect users to malicious websites, deface application interfaces, or execute additional payloads that could lead to complete system compromise. The vulnerability particularly affects users of the Connected-free Wi-Fi service in Japan, where the application serves as the primary interface for network selection and connection management. Users who connect to networks broadcasting malicious SSIDs could inadvertently execute harmful code without any visible indication of compromise, making this vulnerability particularly dangerous due to its stealthy nature and potential for widespread impact across the user base.
Mitigation strategies for this vulnerability should focus on implementing robust input validation and output encoding mechanisms within the application's data handling processes. The primary remediation involves sanitizing all user-supplied SSID data through proper HTML escaping and validation before any display or storage operations occur. Security patches should enforce strict character set restrictions on SSID inputs and implement comprehensive content security policies to prevent execution of unauthorized scripts. Organizations should also consider implementing network-level filtering to detect and block suspicious SSID patterns, though this represents a secondary defense mechanism. The vulnerability's classification under ATT&CK technique T1059.007, which covers Scripting through web shell, underscores the need for comprehensive application security controls including regular code reviews, input validation testing, and security scanning of mobile applications. Additionally, users should be educated about the risks of connecting to untrusted networks and the importance of keeping applications updated to receive security patches that address such vulnerabilities.