CVE-2014-5653 in Unblock Me FREE
Summary
by MITRE
The Unblock Me FREE (aka com.kiragames.unblockmefree) application 1.4.4.2 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 • 08/27/2024
The vulnerability identified as CVE-2014-5653 affects the Unblock Me FREE Android application version 1.4.4.2, representing 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 malicious actors can exploit to compromise user data integrity and confidentiality. The vulnerability directly impacts the application's ability to establish secure connections, potentially exposing users to various forms of cyber attacks that target the fundamental security assumptions of encrypted communications.
The technical flaw manifests in the application's implementation of SSL/TLS certificate validation, where the software fails to perform proper certificate chain validation and trust verification processes. This deficiency allows attackers to perform man-in-the-middle attacks by presenting forged certificates that appear legitimate to the vulnerable application. The certificate verification process should typically validate the certificate's authenticity through trusted certificate authorities, verify the certificate's validity period, check for certificate revocation status, and ensure proper certificate chain integrity. However, the application bypasses these essential security checks, enabling attackers to establish fraudulent secure connections that appear legitimate to end users while actually allowing interception of sensitive data transmitted through these channels.
The operational impact of this vulnerability extends beyond simple data interception, as it fundamentally undermines the trust model that secure communications rely upon. Attackers can exploit this weakness to capture sensitive information including user credentials, personal data, financial information, and other confidential communications that users expect to be protected through SSL encryption. The vulnerability is particularly dangerous because it affects an application that users may trust implicitly, making successful attacks more likely to go undetected. This flaw aligns with CWE-295, which specifically addresses "Improper Certificate Validation" and represents a critical failure in the application's security architecture that directly violates industry best practices for secure communication implementation.
From an attack perspective, this vulnerability maps to several ATT&CK techniques including T1566 for credential access through phishing and T1041 for data encryption for exfiltration. The attack vector typically involves setting up a rogue network access point or compromising network infrastructure to intercept communications, then presenting forged SSL certificates that the vulnerable application accepts without proper validation. The impact is particularly severe for applications that handle user authentication or sensitive data transmission, as the vulnerability essentially removes the security guarantee that SSL/TLS protocols are designed to provide. Organizations and users should be aware that this vulnerability affects not just the specific application but represents a fundamental security flaw in how the application handles secure communications.
Mitigation strategies for CVE-2014-5653 require immediate attention through software updates that implement proper certificate validation mechanisms. The recommended approach includes implementing certificate pinning to prevent the acceptance of forged certificates, ensuring proper certificate chain validation, and maintaining up-to-date certificate trust stores. Organizations should also consider network-level security controls such as SSL inspection and monitoring for suspicious certificate usage patterns. The vulnerability highlights the critical importance of proper security implementation in mobile applications and underscores the necessity of following established security standards and best practices. Users should avoid using the vulnerable application until a patched version is available, while developers should implement comprehensive security testing including certificate validation verification as part of their quality assurance processes. This vulnerability serves as a reminder of the critical nature of secure communication implementation in mobile applications and the potential consequences of inadequate security controls in widely used software.