CVE-2014-5680 in Tapatalk
Summary
by MITRE
The Tapatalk (aka com.quoord.tapatalkpro.activity) application 4.8.0 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 • 08/28/2024
The vulnerability identified as CVE-2014-5680 affects the Tapatalk Android application version 4.8.0, specifically targeting its implementation of secure communication protocols. This flaw represents a critical security weakness in the application's certificate validation mechanism, which is fundamental to establishing trust in encrypted communications. The issue stems from the application's failure to properly validate X.509 certificates presented by SSL servers during the secure connection establishment process. This omission creates a significant attack vector that enables malicious actors to exploit the trust relationship between the mobile client and remote servers.
The technical flaw manifests as a complete absence of certificate verification within the application's SSL implementation. When the Tapatalk application establishes a secure connection to its backend servers, it should validate the presented X.509 certificates against trusted certificate authorities and check for proper certificate chains, validity periods, and hostname matching. However, the application bypasses these essential security checks, allowing any certificate to be accepted regardless of its authenticity or trustworthiness. This behavior directly violates established security protocols and creates a dangerous trust model where the application cannot distinguish between legitimate servers and malicious imposters. The vulnerability aligns with CWE-295, which specifically addresses "Improper Certificate Validation" and represents a fundamental failure in the application's cryptographic security implementation.
The operational impact of this vulnerability is severe and multifaceted, particularly in the context of mobile applications handling sensitive user data. Attackers can exploit this weakness through man-in-the-middle attacks, where they intercept communications between the Tapatalk application and its servers, presenting forged certificates to establish false trust relationships. This enables attackers to eavesdrop on user communications, steal session tokens, access private forum posts, and potentially obtain personal information or credentials. The vulnerability is particularly dangerous for a forum application like Tapatalk, where users may share sensitive personal information, private messages, or confidential business communications. The attack surface extends beyond simple data interception to include potential account takeovers, data manipulation, and unauthorized access to protected forum content. According to ATT&CK framework, this vulnerability maps to T1046 (Network Service Scanning) and T1566 (Phishing) as attackers can leverage the compromised trust relationship to conduct further social engineering attacks.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The primary fix involves implementing proper certificate validation mechanisms that verify certificate chains against trusted root authorities, check certificate expiration dates, and validate hostname matching. Application developers should implement certificate pinning where appropriate, storing known good certificate fingerprints and rejecting any certificates that do not match these pinned values. Network administrators should consider implementing additional monitoring to detect unusual certificate behavior or connection patterns that might indicate exploitation attempts. Users should be advised to update to patched versions of the application as soon as they become available, and organizations should conduct security assessments to identify other applications with similar certificate validation flaws. The vulnerability demonstrates the critical importance of following security best practices in mobile application development, particularly around cryptographic implementation and secure communication protocols. Organizations should also implement security awareness training to help users recognize potential security threats and understand the importance of keeping applications updated.