CVE-2014-5643 in Instachat -Instagram Messenger
Summary
by MITRE
The Instachat -Instagram Messenger (aka com.instachat.android) application 1.6.2 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 • 08/27/2024
The vulnerability identified as CVE-2014-5643 represents a critical security flaw in the Instachat - Instagram Messenger Android application version 1.6.2. This application, which facilitates messaging services integrated with Instagram, fails to properly validate SSL/TLS certificates during network communications, creating a significant attack surface that exposes users to sophisticated man-in-the-middle threats. The absence of proper certificate verification mechanisms fundamentally undermines the security of all data transmitted between the mobile client and remote servers, making it susceptible to various forms of cryptographic attacks that would otherwise be prevented by standard SSL/TLS protocols.
The technical flaw stems from the application's failure to implement proper certificate pinning or validation procedures that are standard in secure mobile applications. When an Android application establishes SSL connections, it should verify the server's X.509 certificate against trusted certificate authorities and validate the certificate chain to ensure authenticity. In this case, the Instachat application bypasses these essential verification steps, allowing attackers to present maliciously crafted certificates that appear legitimate to the application. This vulnerability directly maps to CWE-295, which specifically addresses the weakness of inadequate certificate validation in secure communications, and aligns with ATT&CK technique T1041 which describes data manipulation through man-in-the-middle attacks.
The operational impact of this vulnerability extends beyond simple data interception, as it enables attackers to establish complete control over communication channels between the mobile application and backend services. An attacker positioned in the network path can present a forged certificate signed by a trusted authority or even create a self-signed certificate that the application will accept without verification. This allows for comprehensive surveillance of all messages, user credentials, and personal information transmitted through the messaging platform. The vulnerability is particularly dangerous because it affects the core communication security model of the application, potentially exposing user conversations, personal data, and authentication tokens that could be used for further attacks on Instagram accounts or other connected services.
Mitigation strategies for this vulnerability require immediate implementation of proper SSL certificate validation mechanisms within the application. Developers should implement certificate pinning to ensure that only specific certificates or certificate authorities are accepted for connections, thereby preventing attackers from using forged certificates. The application should also incorporate proper certificate chain validation and implement certificate revocation checking to detect compromised certificates. Additionally, security updates should enforce strict hostname validation and implement certificate transparency measures. Organizations should also consider implementing network-level monitoring to detect unusual certificate behavior and establish regular security audits to ensure compliance with industry standards such as those outlined in the OWASP Mobile Security Project and NIST guidelines for secure mobile application development. The vulnerability demonstrates the critical importance of proper cryptographic implementation in mobile applications and serves as a reminder of the devastating consequences that can result from inadequate security controls in communication protocols.