CVE-2014-5934 in Flurv Chat
Summary
by MITRE
The Flurv Chat (aka com.flurv.android) application 4.3.3 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 • 09/07/2024
The vulnerability identified as CVE-2014-5934 affects the Flurv Chat Android application version 4.3.3, representing a critical security flaw in the application's implementation of secure communications. This issue stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a significant pathway for malicious actors to compromise the integrity of data transmission between the mobile client and remote servers. The vulnerability specifically impacts the application's certificate verification mechanism, which is a fundamental component of secure communication protocols designed to establish trust between client and server entities.
The technical flaw manifests as a lack of proper certificate chain validation and trust verification processes within the application's SSL implementation. When the Flurv Chat application establishes secure connections to its backend services, it fails to perform the essential validation steps required to ensure that certificates are issued by trusted Certificate Authorities and that they properly match the target server's hostname. This weakness allows attackers to intercept communications and present fraudulent certificates that the application will accept without proper scrutiny, effectively bypassing the security assurances typically provided by SSL/TLS encryption. The vulnerability aligns with CWE-295, which specifically addresses improper certificate validation, and represents a classic example of insufficient transport layer security implementation.
The operational impact of this vulnerability extends beyond simple data interception, creating opportunities for comprehensive man-in-the-middle attacks that can compromise user credentials, personal information, and sensitive communications within the application. Attackers can exploit this flaw to establish fake server endpoints that appear legitimate to the vulnerable application, enabling them to capture and manipulate all data transmitted between users and the Flurv Chat services. This includes potentially sensitive user communications, authentication tokens, and personal information that users expect to be protected through secure connections. The vulnerability particularly affects the confidentiality and integrity aspects of the CIA triad, as it undermines the fundamental security guarantees that SSL/TLS protocols are designed to provide.
Organizations and users affected by this vulnerability should implement immediate mitigations including updating to patched versions of the Flurv Chat application where available, and considering network-level monitoring to detect potential certificate manipulation attempts. Security professionals should also implement certificate pinning mechanisms where possible, though this approach requires careful consideration of application maintenance and update strategies. From an ATT&CK framework perspective, this vulnerability maps to techniques involving credential access and defense evasion, as attackers can leverage the insecure certificate validation to gain access to user credentials and maintain persistent access to compromised systems. The vulnerability demonstrates how mobile application security flaws can create persistent attack vectors that remain exploitable until proper certificate validation mechanisms are implemented and enforced.