CVE-2017-2105 in TVer App
Summary
by MITRE
The TVer App for Android 3.2.7 and earlier 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 • 12/21/2020
The vulnerability identified as CVE-2017-2105 affects the TVer App for Android version 3.2.7 and earlier, representing a critical security flaw in the application's SSL/TLS certificate validation mechanism. This weakness exposes users to significant risks during network communications, as the application fails to properly authenticate server certificates through X.509 verification processes. The absence of proper certificate validation creates an exploitable condition that undermines the fundamental security assurances provided by Transport Layer Security protocols.
The technical flaw manifests in the application's failure to implement proper certificate pinning or validation checks when establishing secure connections to remote servers. This vulnerability falls under the category of insecure cryptographic implementation, specifically related to certificate validation and trust management. The weakness enables attackers to perform man-in-the-middle attacks by presenting forged certificates that the application accepts without proper scrutiny. According to CWE classification, this represents a variant of CWE-295: Improper Certificate Validation, which directly addresses the failure to properly validate X.509 certificates during SSL/TLS handshakes.
The operational impact of this vulnerability is substantial, as it allows malicious actors to intercept and potentially manipulate sensitive user data transmitted through the application. Attackers can create fraudulent SSL certificates that appear legitimate to the vulnerable application, enabling them to capture login credentials, personal information, financial data, and other confidential communications. The vulnerability affects the integrity and confidentiality of data in transit, violating core security principles of secure communications. From an ATT&CK framework perspective, this vulnerability maps to T1046: Network Service Scanning and T1566: Phishing, as it enables attackers to establish unauthorized communication channels and potentially harvest user credentials.
The implications extend beyond simple data interception, as this vulnerability can facilitate more sophisticated attacks including credential theft, session hijacking, and data exfiltration. Users of the affected application are particularly vulnerable when accessing the service over untrusted networks such as public Wi-Fi hotspots, where the risk of man-in-the-middle attacks is significantly higher. The vulnerability demonstrates poor security implementation practices and highlights the critical importance of proper cryptographic protocol enforcement in mobile applications. Organizations should implement immediate mitigations including application updates, certificate pinning mechanisms, and enhanced network monitoring to protect against exploitation of this vulnerability.