CVE-2014-6968 in Grandma's Grotto
Summary
by MITRE
The Grandma s Grotto (aka com.mobileappsuite.grandmasgrotto) application 1 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 • 09/24/2024
The vulnerability identified as CVE-2014-6968 affects the Grandma s Grotto Android application, specifically targeting its implementation of secure communication protocols. This represents a critical security flaw in the application's approach to establishing trust with remote servers through SSL/TLS connections. The application fails to properly validate X.509 certificates during the secure communication handshake process, creating a significant attack surface that adversaries can exploit to compromise user data integrity and confidentiality.
This technical weakness stems from the application's failure to implement proper certificate verification mechanisms, which is a fundamental requirement for maintaining secure communications in mobile applications. The vulnerability directly relates to CWE-295, which addresses improper certificate validation in secure communications. When an application does not verify SSL certificates, it essentially removes the cryptographic assurance that data transmitted between the client and server remains private and authentic. Attackers can leverage this flaw by presenting maliciously crafted certificates to intercept and manipulate communications between the mobile application and its backend services.
The operational impact of this vulnerability extends beyond simple data interception, as it enables sophisticated man-in-the-middle attacks that can compromise sensitive user information. Mobile applications that fail to validate SSL certificates become vulnerable to attacks where adversaries can establish fake secure connections and silently capture user credentials, personal data, financial information, or other sensitive content. This vulnerability particularly affects applications handling user authentication, payment processing, or confidential data exchange, making it a prime target for cybercriminals seeking to exploit mobile application security weaknesses.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1046, which covers network service scanning and exploitation of weak security implementations. The flaw creates an opportunity for attackers to establish persistent access points within mobile application ecosystems, potentially enabling long-term data harvesting or credential theft operations. Security professionals should note that this vulnerability represents a common pattern in mobile application development where security controls are either omitted or inadequately implemented, particularly in applications developed by smaller development teams or those prioritizing rapid deployment over security rigor.
Mitigation strategies for this vulnerability require immediate implementation of proper certificate validation mechanisms within the application's secure communication layer. Developers should implement certificate pinning techniques to ensure that only trusted certificates from specific authorities are accepted, while also ensuring that all SSL/TLS connections properly validate certificate chains and expiration dates. Organizations should conduct comprehensive security assessments of their mobile application portfolios to identify similar certificate validation weaknesses and implement security controls that align with industry standards such as those recommended by NIST SP 800-52 for certificate management and secure communications protocols.