CVE-2014-6838 in Groupama toujours la
Summary
by MITRE
The Groupama toujours la (aka com.groupama.toujoursla) application 1.3.0 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 • 09/18/2024
The vulnerability identified as CVE-2014-6838 affects the Groupama toujours la Android application version 1.3.0, presenting a critical security flaw in the application's SSL/TLS certificate validation mechanism. This weakness stems from the application's failure to properly verify X.509 certificates from SSL servers, creating a significant attack surface that enables malicious actors to execute man-in-the-middle attacks against users of the application. The vulnerability is particularly concerning as it directly undermines the fundamental security principles of secure communication channels that users expect when transmitting sensitive information through mobile applications. The application's improper certificate validation means it accepts any certificate presented by a server without performing the necessary cryptographic checks that ensure the authenticity and integrity of the communication endpoint.
The technical flaw manifests in the application's inability to perform proper certificate chain validation, which is a core requirement for establishing trust in SSL/TLS communications. This vulnerability aligns with CWE-295, which specifically addresses "Improper Certificate Validation," and represents a classic case of insufficient cryptographic validation where the application fails to verify certificate signatures, expiration dates, and issuer information. The application's certificate verification process appears to be completely bypassed or inadequately implemented, allowing attackers to present forged certificates that the application accepts as legitimate. This flaw operates at the transport layer security level and directly violates industry best practices outlined in standards such as NIST SP 800-57 and RFC 5280, which mandate rigorous certificate validation procedures to prevent impersonation attacks.
The operational impact of this vulnerability extends beyond simple data interception, as it enables attackers to not only eavesdrop on communications but also to actively modify data in transit or redirect users to malicious endpoints. When users interact with the Groupama toujours la application, any sensitive information transmitted could be compromised, including personal identification details, financial information, or other confidential data that the application processes. The vulnerability creates a persistent risk for all users of the affected application version, as the attack can be executed without requiring any special privileges or advanced technical skills from the attacker. This makes the vulnerability particularly dangerous in environments where users may be accessing sensitive financial or personal data through mobile applications that lack proper security controls.
Organizations and users should immediately implement mitigations to address this vulnerability, including updating to a patched version of the application that properly validates SSL/TLS certificates. The recommended approach involves implementing proper certificate pinning mechanisms, where the application explicitly trusts only specific certificate authorities or public keys, and ensuring that all certificate validation checks are performed according to established cryptographic standards. Security teams should also consider deploying network monitoring solutions that can detect anomalous certificate behavior and implement additional layers of security such as application firewalls or secure communication proxies. This vulnerability demonstrates the critical importance of proper cryptographic implementation in mobile applications and serves as a reminder of the need for comprehensive security testing, including penetration testing and code reviews, to identify and remediate such flaws before they can be exploited in real-world scenarios. The incident also highlights the necessity of following established security frameworks and guidelines such as those provided by OWASP Mobile Security Project and NIST cybersecurity guidelines to ensure that mobile applications maintain appropriate security postures against evolving threats.