CVE-2014-7458 in BloomYou Valentine
Summary
by MITRE
The BloomYou Valentine (aka com.bloomyouteam.bloomyou.valentine) application 2.4 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 • 10/07/2024
The CVE-2014-7458 vulnerability affects the BloomYou Valentine Android application version 2.4, presenting a critical security flaw in the application's SSL certificate verification mechanism. This vulnerability falls under the category of weak cryptographic practices and improper certificate validation, which are commonly classified as CWE-295 - "Improper Certificate Validation" within the Common Weakness Enumeration framework. The application's failure to properly verify X.509 certificates from SSL servers creates a significant security gap that can be exploited by malicious actors to perform man-in-the-middle attacks against users of the application.
The technical flaw in this vulnerability stems from the application's implementation of SSL/TLS connections without proper certificate pinning or validation procedures. When an Android application establishes a secure connection to a remote server, it should validate the server's X.509 certificate against a trusted certificate authority to ensure the authenticity of the server. However, the BloomYou Valentine application bypasses this critical validation step, allowing attackers to present forged certificates that the application will accept as legitimate. This weakness enables attackers to intercept and modify communications between the user's device and the application's servers, potentially gaining access to sensitive user data including personal information, login credentials, or other confidential data transmitted through the application.
The operational impact of this vulnerability extends beyond simple data interception, as it fundamentally undermines the security model that users expect from mobile applications. Attackers can exploit this weakness to impersonate legitimate servers and establish fraudulent connections that appear secure to the user. This allows for various malicious activities including credential theft, data exfiltration, session hijacking, and the injection of malicious content into the application's communications. The vulnerability is particularly dangerous because it affects the core security infrastructure of the application, making it difficult for users to detect when their communications are being compromised. From an adversarial perspective, this vulnerability maps to ATT&CK technique T1041 - "Exfiltration Over C2 Channel" and T1566 - "Phishing for Information" as attackers can leverage the compromised connection to gather sensitive information without raising immediate suspicion.
Mitigation strategies for this vulnerability should focus on implementing proper certificate validation mechanisms within the application. Developers must ensure that all SSL connections validate server certificates against trusted certificate authorities and implement certificate pinning where appropriate. The application should verify certificate chains, check certificate expiration dates, and validate certificate signatures to prevent the acceptance of forged certificates. Additionally, implementing certificate transparency measures and regularly updating certificate validation libraries can help prevent exploitation of this vulnerability. Organizations should also consider implementing network monitoring to detect unusual traffic patterns that might indicate man-in-the-middle attacks. The vulnerability highlights the importance of following secure coding practices and adhering to mobile security standards such as those outlined in the OWASP Mobile Security Project, particularly the M3 category focusing on insecure communication channels. Regular security audits and penetration testing should be conducted to identify similar certificate validation issues in other applications and ensure that cryptographic implementations meet industry best practices for mobile security.