CVE-2014-6690 in InstaMessage - Instagram Chat
Summary
by MITRE
The InstaMessage - Instagram Chat (aka com.futurebits.instamessage.free) 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 • 09/13/2024
The vulnerability identified as CVE-2014-6690 affects the InstaMessage - Instagram Chat Android application version 1.6.2, presenting 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 flaw creates a significant attack surface that enables malicious actors to perform man-in-the-middle attacks against users of the application. When an attacker successfully intercepts communications between the mobile application and Instagram's servers, they can present a forged certificate that appears legitimate to the vulnerable application, thereby undermining the entire SSL/TLS security framework that protects user data transmission.
The technical implementation of this vulnerability resides in the application's cryptographic handshake process where certificate validation is either completely omitted or inadequately implemented. This type of flaw corresponds to CWE-295, which specifically addresses improper certificate validation in secure communications. The application's failure to validate certificate chains, expiration dates, and issuer information creates a pathway for attackers to establish fraudulent secure connections. The vulnerability is particularly dangerous because it operates at the transport layer security validation, where the application should be ensuring that all communications are encrypted and authenticated through legitimate server certificates. This flaw directly violates security best practices outlined in industry standards such as NIST SP 800-52 for certificate management and the OWASP Mobile Top 10's M3 weakness related to insecure communication.
The operational impact of this vulnerability extends beyond simple data interception, as it enables comprehensive surveillance and data manipulation capabilities for attackers. Users of the InstaMessage application become vulnerable to credential theft, session hijacking, and exposure of private conversations that are meant to be protected through end-to-end encryption. The vulnerability affects all communication channels within the application, potentially compromising not only user messages but also authentication tokens and personal information exchanged with Instagram's servers. Attackers can leverage this weakness to redirect users to malicious servers, inject false content, or capture sensitive data without the user's knowledge. This creates a persistent threat vector that remains active as long as the vulnerable application version is installed on user devices.
Mitigation strategies for this vulnerability require immediate application updates that implement proper certificate validation mechanisms. The recommended approach involves implementing certificate pinning techniques where the application explicitly trusts only specific certificates or certificate authorities known to be legitimate. Security patches should enforce full certificate chain validation, including checking certificate expiration dates, verifying certificate signatures, and ensuring proper certificate hierarchy. Organizations should also consider implementing network monitoring to detect anomalous certificate behavior and establish secure communication protocols that align with industry standards such as those defined in RFC 5280 for X.509 certificate handling. Additionally, users should be advised to immediately update to the patched version of the application and avoid using untrusted networks when accessing the application. The vulnerability serves as a prime example of why mobile applications must implement robust cryptographic security measures and adhere to the principle of least privilege in their security architecture, as outlined in the MITRE ATT&CK framework's network security measures category.