CVE-2014-6671 in World Cup 2014 Brazil - Xem TV
Summary
by MITRE
The World Cup 2014 Brazil - Xem TV (aka vn.letshare.football.worldcup) application 2.6 for Android does not verify X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
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Analysis
by VulDB Data Team • 09/12/2024
The CVE-2014-6671 vulnerability affects the World Cup 2014 Brazil - Xem TV Android application version 2.6, representing a critical security flaw in mobile application cryptography implementation. This vulnerability stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a significant attack vector for malicious actors. The flaw directly impacts the application's ability to establish secure communications with remote servers, fundamentally undermining the security assurances that SSL/TLS protocols are designed to provide.
The technical root cause of this vulnerability lies in the application's improper handling of certificate validation mechanisms within its SSL/TLS implementation. When an Android application establishes a secure connection to a server, it should validate the server's X.509 certificate against a trusted certificate authority to ensure the authenticity of the server. The World Cup 2014 Brazil - Xem TV application bypasses this critical verification step, allowing attackers to present malicious certificates that appear legitimate to the application. This weakness specifically aligns with CWE-295, which addresses improper certificate validation in secure communications, and represents a fundamental failure in the application's security architecture.
The operational impact of this vulnerability creates a severe risk environment for users of the application. Attackers can exploit this flaw through man-in-the-middle attacks, where they intercept communications between the mobile application and its servers. By presenting a crafted certificate that the application accepts without proper verification, malicious actors can impersonate legitimate servers and gain access to sensitive user data. This includes personal information, login credentials, and potentially financial data if the application handles any payment-related transactions. The vulnerability essentially eliminates the confidentiality and integrity protections that SSL/TLS is designed to provide, making user communications highly susceptible to interception and manipulation.
From a threat modeling perspective, this vulnerability maps directly to several ATT&CK techniques including T1566 for credential access through phishing and T1041 for data encryption for exfiltration. The attack surface is particularly concerning given that the application is designed for entertainment purposes and likely collects user information for personalized content delivery. Users may unknowingly transmit sensitive data through the compromised application, believing they are accessing legitimate services. The vulnerability also creates opportunities for attackers to inject malicious content or redirect users to fraudulent websites, potentially leading to further compromise of user devices or accounts.
Mitigation strategies for this vulnerability require immediate attention from both developers and users. Application developers must implement proper certificate validation mechanisms that verify certificate chains against trusted CAs and check certificate expiration dates and hostname matching. The application should utilize the standard Android certificate validation APIs rather than implementing custom or insecure validation logic. Users should avoid installing or using applications with known certificate validation flaws and should only download applications from trusted sources. Security researchers and organizations should conduct comprehensive security assessments of mobile applications to identify similar certificate validation issues that may exist in other applications within the same ecosystem. This vulnerability serves as a reminder of the critical importance of proper cryptographic implementation in mobile applications and the potential consequences of inadequate security controls.