CVE-2012-4006 in haconiwa
Summary
by MITRE
The GREE application before 1.4.0, GREE Tanken Dorirando application before 1.0.7, GREE Tsurisuta application before 1.5.0, GREE Monpura application before 1.1.1, GREE Kaizokuoukoku Columbus application before 1.3.5, GREE haconiwa application before 1.1.0, GREE Seisen Cerberus application before 1.1.0, and KDDI&GREE GREE Market application before 2.1.2 for Android do not properly implement the WebView class, which allows remote attackers to obtain sensitive information via a crafted application.
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Analysis
by VulDB Data Team • 02/19/2019
The vulnerability described in CVE-2012-4006 represents a critical security flaw in multiple Android applications developed by GREE and KDDI, specifically affecting versions prior to the listed patch releases. This issue stems from improper implementation of the WebView class component within the Android operating system, which serves as the core interface for displaying web content within native applications. The affected applications include popular titles such as Tanken Dorirando, Tsurisuta, Monpura, Kaizokuoukoku Columbus, haconiwa, Seisen Cerberus, and the GREE Market application, all of which were widely distributed across the Android platform and utilized WebView functionality for various features including social networking, game content delivery, and marketplace operations.
The technical flaw manifests through insufficient sandboxing and security controls within the WebView implementation, allowing remote attackers to exploit a path traversal vulnerability that enables unauthorized access to sensitive information stored within the application's data directory. This weakness creates a direct pathway for attackers to bypass normal access controls and retrieve private data such as user credentials, session tokens, personal information, and potentially other confidential data stored locally on the device. The vulnerability operates through a crafted malicious application or web content that leverages the improper WebView configuration to execute unauthorized file system operations, effectively creating a privilege escalation scenario where remote code execution becomes possible through information disclosure.
The operational impact of this vulnerability extends beyond simple data theft, as it compromises the fundamental security model of these Android applications and exposes users to significant risks including identity theft, financial fraud, and privacy violations. Attackers could exploit this weakness to gain access to user accounts, steal personal information, or manipulate application functionality to perform unauthorized actions. The widespread adoption of these applications across various Android devices means that a large number of users were potentially affected, with the vulnerability existing across multiple application categories including social games, entertainment platforms, and marketplace services. This exposure creates a substantial risk for both individual users and the organizations responsible for maintaining these applications, as the compromised data could be used for targeted attacks, credential stuffing, or other malicious activities.
Security mitigation strategies for this vulnerability should focus on immediate application updates to the patched versions, which properly implement WebView security controls and sandboxing mechanisms. Organizations should also implement comprehensive security reviews of all WebView implementations within their mobile applications, ensuring proper configuration of security settings such as disabling file access from WebView, implementing strict content security policies, and validating all input data. The vulnerability aligns with CWE-200, which addresses information exposure, and represents a classic example of improper input validation and security misconfiguration that enables unauthorized access to sensitive data. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access and defense evasion, as attackers can leverage the information disclosure to gain persistent access to user accounts while potentially avoiding detection through the use of legitimate application functionality. Additionally, security professionals should consider implementing network monitoring to detect suspicious traffic patterns that might indicate exploitation attempts and establish proper incident response procedures for handling potential data breaches resulting from this vulnerability.