CVE-2017-14711 in Bundesliga Manager App
Summary
by MITRE
The Kickbase GmbH "Kickbase Bundesliga Manager" app before 2.2.1 -- aka kickbase-bundesliga-manager/id678241305 -- for iOS is vulnerable to a credentials leak due to transmitting a username and password in cleartext from client to server during registration and authentication.
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Analysis
by VulDB Data Team • 12/05/2019
The vulnerability identified as CVE-2017-14711 affects the Kickbase Bundesliga Manager mobile application developed by Kickbase GmbH, specifically versions prior to 2.2.1 for iOS devices. This represents a critical security flaw that exposes user authentication credentials through unencrypted transmission channels during the registration and authentication processes. The application fails to implement proper cryptographic protection for sensitive data, creating a significant risk for all users who interact with the service.
This vulnerability stems from the application's improper handling of authentication data transmission, where username and password credentials are sent in cleartext format rather than being encrypted using secure protocols such as TLS/SSL. The technical implementation violates fundamental security principles by transmitting sensitive information without adequate protection mechanisms. According to CWE-312, this constitutes a cleartext storage or transmission of sensitive information, while the flaw aligns with ATT&CK technique T1071.004 for application layer protocol usage. The vulnerability exists at the network communication layer where authentication data flows from the mobile client to the backend server, creating an attack surface that malicious actors can exploit.
The operational impact of this vulnerability is severe as it allows attackers to intercept authentication credentials during transmission, potentially enabling unauthorized access to user accounts. Attackers with network access can utilize packet sniffing tools to capture the cleartext credentials, leading to account takeover, data theft, and potential lateral movement within the application ecosystem. The risk is particularly pronounced for users accessing the application over unsecured networks such as public wifi hotspots. This flaw undermines the fundamental security posture of the application and creates persistent risks for all users who have registered or plan to register with the service.
Mitigation strategies should focus on implementing proper encryption protocols for all client-server communications, specifically requiring TLS 1.2 or higher with strong cipher suites for authentication data transmission. The application must be updated to enforce secure communication channels for all authentication operations, including registration and login processes. Security measures should include certificate pinning to prevent man-in-the-middle attacks, implementation of secure token-based authentication mechanisms, and removal of cleartext credential transmission. Organizations should also conduct regular security assessments and implement network monitoring to detect and prevent credential interception attempts. The fix requires comprehensive code review and secure coding practices to ensure all network communications involving sensitive data are properly encrypted.