CVE-2014-6648 in iPhone4.TW
Summary
by MITRE
The iPhone4.TW (aka com.tapatalk.iPhone4TWforums) application 3.3.20 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 • 09/11/2024
The vulnerability identified as CVE-2014-6648 represents a critical security flaw in the iPhone4.TW mobile application version 3.3.20 for Android platforms. This application, designed to provide access to iPhone4.TW forums, demonstrates a fundamental failure in implementing proper SSL/TLS certificate validation mechanisms. The flaw resides in the application's inability to properly verify X.509 certificates presented by SSL servers during secure communications, creating a significant attack vector for malicious actors.
This vulnerability directly relates to CWE-295, which addresses improper certificate validation in secure communications. The application's failure to validate SSL certificates means that it accepts any certificate presented by a server without proper authentication or verification of the certificate authority. This weakness enables man-in-the-middle attacks where attackers can establish fraudulent SSL connections with the application, effectively bypassing the intended security protections of encrypted communications. The flaw essentially removes the cryptographic assurance that data transmitted between the mobile application and remote servers remains secure and authentic.
The operational impact of this vulnerability is severe and multifaceted. Attackers can exploit this weakness to intercept and manipulate sensitive data transmitted between the Android application and the iPhone4.TW forums server. This includes user credentials, private messages, forum posts, and any other information exchanged through the application. The vulnerability undermines the fundamental security model of secure communications by allowing attackers to impersonate legitimate servers and establish trusted connections without proper authentication. This creates a persistent threat where users remain unaware that their communications are being intercepted or modified by malicious parties.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1041, which describes data manipulation during transit, and T1566, which covers social engineering attacks that exploit weak security implementations. The attack surface is particularly concerning given that mobile applications often handle sensitive personal and potentially confidential information. The vulnerability's exploitation requires minimal technical expertise, making it attractive to attackers who seek to compromise user data without sophisticated attack capabilities. Organizations and users should recognize that this flaw represents a failure in the security implementation lifecycle, where proper certificate validation was either omitted or incorrectly implemented.
Mitigation strategies should focus on implementing robust certificate validation mechanisms that enforce proper X.509 certificate chain validation, including checking certificate expiration dates, verifying certificate authority signatures, and implementing certificate pinning where appropriate. Application developers should adopt industry best practices for secure communication protocols and regularly audit their security implementations against established frameworks. Additionally, users should be advised to avoid using applications with known certificate validation flaws and to ensure that their mobile devices maintain up-to-date security patches and configurations to minimize exposure to such vulnerabilities.