CVE-2014-5551 in Alphabet! Spelling Kids Games
Summary
by MITRE
The Alphabet & Spelling Kids Games (aka air.com.tribalnova.ilearnwith.ipad.App1En) application 1.4.2 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 • 08/24/2024
The vulnerability identified as CVE-2014-5551 affects the Alphabet & Spelling Kids Games application version 1.4.2 for Android devices, representing a critical security flaw in the application's handling of secure communications. This issue stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a significant attack vector that compromises the integrity of data transmission between the mobile application and remote servers. The vulnerability specifically impacts the application's cryptographic security implementation, leaving users exposed to potential interception and manipulation of sensitive information exchanged through the app's network communications.
The technical flaw manifests as a missing certificate verification mechanism within the application's SSL implementation, which violates fundamental security principles for secure communication protocols. This weakness allows attackers to perform man-in-the-middle attacks by presenting forged SSL certificates that appear legitimate to the vulnerable application. The absence of proper certificate validation means the application accepts any certificate presented by a server without verifying its authenticity, trust chain, or proper signing authority. This failure directly correlates to CWE-295, which addresses improper certificate validation in security protocols, and represents a classic example of insufficient cryptographic validation that undermines the entire security model of secure communications.
The operational impact of this vulnerability extends beyond simple data interception, as it enables attackers to not only read sensitive information but also to modify data in transit, potentially altering educational content or user data within the application. Mobile applications targeting children and educational environments face heightened security risks when such vulnerabilities exist, as they often handle personal information, user progress data, and potentially identifiable information about minors. The vulnerability creates a persistent risk for users who may unknowingly interact with compromised servers, potentially leading to unauthorized access to their educational accounts, personal learning progress, or other sensitive data that the application may collect or transmit.
Mitigation strategies for this vulnerability require immediate implementation of proper SSL certificate validation mechanisms within the application's network communication layer. Developers must ensure that all SSL/TLS connections verify certificate chains against trusted root authorities, check certificate expiration dates, and validate domain names against certificate subject fields. This remediation aligns with industry best practices outlined in the OWASP Mobile Security Project and follows the principle of certificate pinning where appropriate. The fix should implement robust certificate validation routines that comply with RFC 5280 standards for X.509 certificate processing, ensuring that only certificates from trusted certificate authorities are accepted. Additionally, security architects should consider implementing certificate transparency checks and regular security audits of network communication components to prevent similar vulnerabilities from emerging in future application versions. Organizations should also establish secure coding practices that prioritize cryptographic security from the initial development phases, incorporating security testing and validation into their software development lifecycle processes.