CVE-2014-7693 in JusApp!
Summary
by MITRE
The JusApp! (aka com.tapatalk.jusappcombrforum) application 3.7.5 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 • 10/15/2024
The vulnerability identified as CVE-2014-7693 affects the JusApp! Android application version 3.7.5, representing a critical security flaw in the application's implementation of secure communication protocols. This issue stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a significant attack surface that adversaries can exploit to compromise user data and system integrity. The vulnerability specifically impacts the application's ability to establish trust with remote servers, fundamentally undermining the security model designed to protect sensitive information transmitted over network connections.
The technical flaw manifests as a missing certificate verification mechanism within the application's SSL implementation, placing the vulnerability squarely within the scope of CWE-295, which addresses "Improper Certificate Validation." This weakness occurs when an application fails to properly validate the authenticity and trustworthiness of SSL certificates presented by servers, allowing attackers to present fraudulent certificates that the application will accept without proper scrutiny. The absence of certificate pinning or proper validation routines creates a scenario where attackers can intercept communications through man-in-the-middle attacks, effectively positioning themselves between the user and legitimate servers.
From an operational perspective, this vulnerability exposes users to severe security risks including data interception, credential theft, and unauthorized access to sensitive information. Attackers can exploit this weakness to create fake server certificates that appear legitimate to the vulnerable application, enabling them to capture and manipulate data transmitted between users and servers. The impact extends beyond simple information disclosure to potentially enable complete session hijacking and unauthorized transactions, particularly if the application handles financial or personal data. This vulnerability directly aligns with ATT&CK technique T1041, which describes data compression and encryption techniques used to avoid detection while exfiltrating sensitive information.
The security implications of CVE-2014-7693 are particularly concerning given the mobile environment's inherent risks and the application's potential access to sensitive user information. Mobile applications like JusApp! often handle personal data, communication records, and potentially financial information, making the lack of proper SSL certificate validation a critical security gap. The vulnerability essentially removes the cryptographic assurance that secure communication should provide, leaving users vulnerable to attacks that would normally be prevented by proper certificate validation. Organizations using this application face potential regulatory compliance issues and increased risk of data breaches, as the vulnerability creates a persistent attack vector that remains active until properly addressed through code modification or application updates.
Mitigation strategies for this vulnerability require immediate implementation of proper SSL certificate validation mechanisms within the application. Developers should implement certificate pinning techniques to ensure that only trusted certificates are accepted, while also ensuring that certificate validation follows industry standards such as those defined in RFC 5280 for X.509 certificate validation. The application should verify certificate chains, check certificate expiration dates, and validate certificate authorities against trusted root certificates. Additionally, implementing proper error handling for certificate validation failures and logging such events can help detect potential attacks. Organizations should also consider deploying network-based monitoring solutions to detect and alert on suspicious certificate behavior patterns that may indicate active exploitation attempts.