CVE-2014-7398 in Dil Bilgisi Kurallari
Summary
by MITRE
The Dil Bilgisi Kurallari (aka com.buronya.dilbilgisi) application 1.0 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 • 10/05/2024
The vulnerability described in CVE-2014-7398 represents a critical security flaw in the Dil Bilgisi Kurallari Android application version 1.0, specifically targeting the application's handling of SSL/TLS certificate verification processes. This weakness falls under the category of improper certificate validation, which is a fundamental security control that ensures the authenticity of communication endpoints. The application fails to properly validate X.509 certificates presented by SSL servers during secure communication sessions, creating a significant attack surface that can be exploited by malicious actors.
This vulnerability directly relates to CWE-295, which addresses the improper validation of certificate authorities, and represents a classic example of a man-in-the-middle attack vector. The flaw enables attackers to perform certificate spoofing operations by presenting maliciously crafted certificates that the application will accept without proper verification. The absence of certificate chain validation, hostname verification, and trust anchor checking mechanisms allows adversaries to establish fraudulent secure connections that appear legitimate to the victim application. This weakness specifically targets the SSL/TLS security model's core principle of establishing trust through verified certificate authorities.
The operational impact of this vulnerability is severe as it compromises the confidentiality and integrity of all data transmitted through the application's network communications. Attackers can intercept, modify, or steal sensitive information including user credentials, personal data, financial information, or any other data that the application might transmit over secure channels. The vulnerability affects the application's ability to maintain secure communication with its backend services, potentially exposing users to identity theft, financial fraud, and other malicious activities. The attack can be executed remotely without requiring physical access to the device or elevated privileges within the application's environment.
From an adversary perspective, this vulnerability aligns with ATT&CK technique T1041, which involves data compression and encryption to evade detection, and T1566, which covers credential harvesting through social engineering or direct attacks on authentication systems. The attack requires minimal technical expertise and can be executed using standard man-in-the-middle tools such as mitmproxy or sslstrip. Mitigation strategies should include implementing proper certificate pinning mechanisms, establishing strict certificate validation procedures, and ensuring that the application validates certificate chains against trusted root certificates. Organizations should also consider implementing network-level security controls such as SSL inspection and monitoring for suspicious certificate patterns. The vulnerability highlights the critical importance of following secure coding practices and adhering to security standards such as those outlined in the OWASP Mobile Security Project and NIST guidelines for mobile application security.