CVE-2014-5875 in Sylphone
Summary
by MITRE
The Sylphone (aka com.sylpheo.prospectosyl) application 5.3.8 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.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 09/04/2024
The vulnerability identified as CVE-2014-5875 affects the Sylphone Android application version 5.3.8, specifically targeting its secure communication protocols. This represents a critical flaw in the application's certificate verification mechanism that undermines the fundamental security assumptions of SSL/TLS encryption. The vulnerability resides in the application's failure to properly validate X.509 certificates presented by SSL servers during the connection establishment process, creating a significant security gap that can be exploited by malicious actors.
The technical flaw manifests as a complete absence of certificate validation within the Sylphone application's SSL implementation. When establishing secure connections to servers, the application accepts any certificate presented without performing the necessary checks against trusted certificate authorities or validating certificate chains. This omission creates a man-in-the-middle attack vector where attackers can generate and present fraudulent certificates that the application will accept as legitimate. The vulnerability directly violates standard security practices outlined in industry frameworks such as CWE-295, which specifically addresses improper certificate validation in secure communications. This weakness allows attackers to intercept and potentially modify data transmitted between the mobile application and backend servers without detection.
The operational impact of this vulnerability is severe and multifaceted, particularly given that Sylphone is a communication application that likely handles sensitive user data including personal information, communication content, and potentially financial details. Attackers exploiting this vulnerability can establish fake server endpoints that appear legitimate to the victim application, enabling them to capture all transmitted data including login credentials, personal communications, and other sensitive information. This vulnerability aligns with ATT&CK technique T1041, which describes data compression and encryption techniques used by adversaries to avoid detection while exfiltrating information. The implications extend beyond simple data theft to potential identity theft, privacy violations, and corporate espionage if the application serves enterprise users.
Mitigation strategies for this vulnerability require immediate implementation of proper certificate validation mechanisms within the application. The recommended approach involves implementing certificate pinning, where the application maintains a whitelist of trusted certificates or certificate authorities and validates server certificates against this established trust store. Additionally, the application should enforce certificate chain validation, ensuring that certificates are issued by trusted authorities and have not expired or been revoked. Organizations should also consider implementing certificate transparency checks and regular security audits of their mobile applications to identify similar validation flaws. The fix must align with security standards such as those defined in the OWASP Mobile Top 10 and NIST SP 800-52 guidelines for mobile application security, ensuring that certificate validation mechanisms are robust and resistant to common attack vectors including certificate forgery and trust exploitation.