CVE-2014-6733 in My T-Mobile
Summary
by MITRE
The My T-Mobile (aka at.tmobile.android.myt) application @7F0C0030 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 • 09/14/2024
The vulnerability identified as CVE-2014-6733 affects the My T-Mobile Android application version 7F0C0030, presenting a critical security flaw in the application's SSL certificate validation mechanism. This weakness stems from the application's failure to properly verify X.509 certificates presented by SSL servers during secure communications, creating a significant attack surface that adversaries can exploit to compromise user data integrity. The vulnerability resides within the application's cryptographic implementation and represents a fundamental breakdown in the security protocol that should ensure secure communication channels between mobile clients and enterprise servers.
The technical flaw manifests as an insufficient certificate verification process that allows malicious actors to perform man-in-the-middle attacks by presenting forged SSL certificates to unsuspecting users. When the My T-Mobile application establishes secure connections to its backend services, it fails to validate the certificate chain against trusted certificate authorities, instead accepting any certificate presented by the server. This behavior violates established security principles for secure communication and creates an environment where attackers can intercept and manipulate sensitive data transmitted between the mobile application and its servers. The vulnerability specifically impacts the application's ability to distinguish between legitimate and malicious SSL endpoints, effectively undermining the entire transport layer security framework.
The operational impact of this vulnerability extends beyond simple data interception, as it enables comprehensive surveillance and data exfiltration capabilities for adversaries. Attackers can exploit this weakness to access user credentials, personal information, financial data, and other sensitive details transmitted through the application's secure channels. The vulnerability affects the confidentiality and integrity of communications, potentially leading to identity theft, financial fraud, and unauthorized access to personal accounts. Given that this is a mobile banking or account management application, the implications are particularly severe as users may unknowingly transmit sensitive information to compromised endpoints while believing they are communicating with legitimate T-Mobile services.
Security professionals should note that this vulnerability aligns with CWE-295, which specifically addresses improper certificate validation in security protocols. The flaw also corresponds to techniques described in the MITRE ATT&CK framework under T1041, which covers data compression and encryption for exfiltration, and T1566, which covers credential access through social engineering and man-in-the-middle attacks. Organizations should implement immediate mitigations including certificate pinning mechanisms, regular security audits of mobile applications, and comprehensive network monitoring to detect suspicious certificate behavior. The recommended remediation involves strengthening the SSL certificate validation process to ensure proper chain of trust verification, implementing certificate pinning where appropriate, and conducting regular penetration testing to identify similar validation weaknesses in other mobile applications.
This vulnerability demonstrates the critical importance of proper cryptographic implementation in mobile applications and highlights the need for comprehensive security testing throughout the development lifecycle. The flaw represents a fundamental security misconfiguration that could be exploited across multiple attack vectors, emphasizing the necessity of robust certificate validation mechanisms in all secure communication implementations. Organizations should prioritize updating affected applications and implementing additional security controls to prevent similar vulnerabilities from occurring in future releases.