CVE-2014-5928 in Steganos Online Shield VPN
Summary
by MITRE
The Steganos Online Shield VPN (aka com.steganos.onlineshield) application 1.0.3 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 • 09/07/2024
The CVE-2014-5928 vulnerability resides in the Steganos Online Shield VPN application version 1.0.3 for Android devices, representing a critical security flaw in the application's SSL/TLS certificate validation mechanism. This vulnerability fundamentally undermines the security assurances that VPN applications are designed to provide, creating a dangerous exposure for users who rely on the application for secure network communications. The flaw specifically affects the certificate verification process that occurs during SSL connections, which is a core component of secure communication protocols. According to CWE-295, this vulnerability corresponds to improper certificate validation, a well-documented weakness that directly enables man-in-the-middle attacks by allowing attackers to present fraudulent certificates without detection.
The technical implementation of this vulnerability stems from the application's failure to properly validate X.509 certificates against trusted certificate authorities during SSL handshakes. When the Steganos Online Shield VPN application establishes secure connections, it does not perform the necessary cryptographic verification steps that would normally confirm the authenticity of server certificates. This omission creates an attack surface where malicious actors can deploy rogue servers with self-signed or improperly signed certificates that the application will accept without question. The vulnerability operates at the transport layer security validation level, bypassing the fundamental security controls that should prevent unauthorized certificate acceptance. Attackers can exploit this weakness by intercepting network traffic and presenting crafted certificates that appear legitimate to the vulnerable application, thereby enabling them to decrypt and potentially modify communications between users and target servers.
The operational impact of this vulnerability extends far beyond simple data interception, as it fundamentally compromises the trust model that VPN applications are designed to establish. Users who connect through the vulnerable Steganos Online Shield application become susceptible to comprehensive surveillance and data theft operations, as attackers can transparently monitor all network traffic passing through the compromised VPN tunnel. This vulnerability particularly affects sensitive communications including financial transactions, personal correspondence, and business data transfers that users expect to remain private. The implications are severe because the application's primary purpose is to provide secure network access, yet it fails to deliver basic security guarantees that are expected from any legitimate VPN service. According to ATT&CK framework techniques, this vulnerability maps to T1041 (Exfiltration Over C2 Channel) and T1566 (Phishing), as it enables attackers to establish persistent surveillance capabilities and potentially harvest credentials or sensitive information from compromised users.
Mitigation strategies for CVE-2014-5928 require immediate action from both end users and application developers. Users should immediately discontinue use of the vulnerable Steganos Online Shield application version 1.0.3 and seek alternative VPN solutions that properly implement certificate validation. Network administrators should implement monitoring to detect potential exploitation attempts and ensure that any affected systems are isolated from sensitive networks. The application developers must implement proper X.509 certificate validation procedures that include checking certificate chains against trusted root authorities, verifying certificate expiration dates, and ensuring that certificate signatures are cryptographically valid. Organizations should also consider implementing network segmentation and additional monitoring controls to detect anomalous traffic patterns that might indicate exploitation attempts. The vulnerability highlights the importance of proper security testing during application development and demonstrates how critical it is to validate all security-related functions, particularly those involving cryptographic operations and certificate validation, as outlined in industry best practices for secure software development lifecycle processes.