CVE-2014-7505 in AppTalk
Summary
by MITRE
The AppTalk (aka com.chatatami.apptalk) application 1.4.8 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 • 10/09/2024
The vulnerability identified as CVE-2014-7505 affects the AppTalk application version 1.4.8 for Android devices, representing 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 presented by SSL servers during secure communications. The absence of certificate verification creates a significant attack vector that enables malicious actors to conduct man-in-the-middle attacks against unsuspecting users. When the application establishes secure connections to servers, it accepts any certificate presented without validating its authenticity, trust chain, or proper signing authority. This fundamental flaw directly violates established security protocols that require robust certificate validation to maintain the integrity and confidentiality of communications between mobile applications and their backend services.
The technical implementation of this vulnerability demonstrates a failure in the application's cryptographic security framework, specifically in how it handles SSL/TLS connections. The application's code does not perform certificate pinning or proper certificate chain validation, leaving the mobile application exposed to attackers who can present fraudulent certificates signed by trusted Certificate Authorities or even self-signed certificates. This flaw operates at the transport layer security validation level, where the application should be enforcing certificate verification according to industry standards and best practices. The vulnerability essentially removes the cryptographic assurance that secure communications provide, allowing attackers to intercept and potentially modify data transmitted between the mobile application and its servers. This type of flaw aligns with CWE-295, which specifically addresses improper certificate validation in security protocols, and represents a classic example of weak cryptographic implementation that undermines the entire security model of the application.
The operational impact of this vulnerability extends beyond simple data interception, as it compromises the fundamental trust model that secure mobile applications rely upon for user data protection. Attackers can exploit this weakness to obtain sensitive information including user credentials, personal data, financial information, and other confidential communications that users expect to remain private. The vulnerability affects all users of the specific application version, creating a widespread security risk across the user base. Mobile applications that handle sensitive data or facilitate financial transactions are particularly at risk, as the flaw enables attackers to establish fraudulent connections that appear legitimate to end users. The attack surface is further expanded because the vulnerability affects the application's ability to distinguish between legitimate servers and malicious impostors, potentially allowing for credential theft, session hijacking, and data manipulation attacks that can have severe financial and privacy implications for affected users.
Mitigation strategies for this vulnerability require immediate remediation of the application's SSL/TLS implementation through comprehensive certificate validation mechanisms. The recommended approach involves implementing proper certificate pinning, where the application explicitly trusts specific certificates or certificate authorities rather than accepting any certificate presented by the server. Security patches should enforce certificate chain validation, including checking certificate expiration dates, verifying certificate signatures, and ensuring proper certificate authority trust relationships. Organizations should implement certificate validation libraries that comply with established security standards and avoid custom implementations that may introduce additional vulnerabilities. The solution should also include regular security testing and code reviews to identify similar weaknesses in other cryptographic implementations. From an ATT&CK framework perspective, this vulnerability relates to techniques involving credential access and defense evasion, as attackers can leverage the weakness to access user credentials and potentially avoid detection through legitimate-looking network connections. Regular security updates and user notifications about the vulnerability are essential to maintain application security posture and protect user data from exploitation.