CVE-2014-6793 in Arch Friend
Summary
by MITRE
The Arch Friend (aka com.xyproto.archfriend) application 0.4.2 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 • 09/16/2024
The vulnerability identified as CVE-2014-6793 affects the Arch Friend application version 0.4.2 for Android operating systems, 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 targets the certificate verification process, which is fundamental to establishing trust in secure communications between mobile applications and remote servers.
The technical flaw manifests as a complete absence of certificate validation mechanisms within the application's SSL implementation. When the Arch Friend application establishes connections to remote servers using SSL/TLS protocols, it fails to perform the essential step of verifying the server's X.509 certificate against trusted certificate authorities. This omission creates a dangerous condition where any malicious actor can generate a fraudulent certificate and present it to the application during a connection attempt. The vulnerability directly maps to CWE-295, which describes "Improper Certificate Validation" and specifically addresses the failure to properly validate X.509 certificates in secure communication implementations. This weakness allows attackers to conduct man-in-the-middle attacks by intercepting communications and presenting forged certificates that the application accepts without proper scrutiny.
The operational impact of this vulnerability extends beyond simple data interception, encompassing a comprehensive compromise of user privacy and data integrity. Attackers can exploit this flaw to obtain sensitive information transmitted through the application, including personal data, credentials, and other confidential communications. The vulnerability is particularly dangerous because it affects the core security architecture of the application, undermining the fundamental trust model that SSL/TLS protocols are designed to establish. Users of the Arch Friend application remain unaware of the compromised connections, as the application silently accepts fraudulent certificates without alerting users or implementing any form of security warning. This vulnerability aligns with ATT&CK technique T1041, which covers "Exfiltration Over C2 Channel" and demonstrates how compromised communication channels can be leveraged for data theft and reconnaissance activities.
Mitigation strategies for this vulnerability require immediate implementation of proper certificate validation mechanisms within the application. The recommended approach involves implementing robust certificate pinning techniques, where the application maintains a trusted list of certificate fingerprints or public keys that it accepts for specific servers. Additionally, the application must incorporate proper certificate chain validation that verifies certificate signatures against trusted root authorities and checks certificate expiration dates and revocation status. Security updates should enforce strict certificate validation procedures that align with industry best practices for mobile application security. Organizations should also consider implementing network monitoring solutions to detect and alert on suspicious certificate behavior, while developers must adhere to established security frameworks such as those outlined in the OWASP Mobile Security Project. The vulnerability demonstrates the critical importance of following secure coding practices and implementing comprehensive security controls from the initial development phases of mobile applications, as the absence of certificate validation creates an irreparable security gap that can be exploited by sophisticated attackers.