CVE-2014-6756 in Reddit Aww
Summary
by MITRE
The Reddit Aww (aka org.biais.redditawww) application 1.2.1 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 • 09/15/2024
The vulnerability identified as CVE-2014-6756 affects the Reddit Aww Android application version 1.2.1, presenting a critical security flaw in the application's handling of secure communications. This issue stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a significant attack surface that adversaries can exploit to compromise user data integrity. The flaw represents a fundamental breakdown in the application's cryptographic security implementation, specifically in its certificate validation mechanisms that are essential for establishing trust in secure communications.
The technical root cause of this vulnerability lies in the application's improper implementation of SSL/TLS certificate verification processes. When the Reddit Aww application establishes connections to remote servers, it fails to validate the server certificates against trusted certificate authorities, instead accepting any certificate presented by the server. This behavior violates established security protocols and creates a pathway for man-in-the-middle attacks where malicious actors can intercept communications by presenting forged certificates that appear legitimate to the vulnerable application. The vulnerability directly maps to CWE-295, which specifically addresses improper certificate validation in security protocols, and represents a critical failure in the application's trust model.
The operational impact of this vulnerability extends beyond simple data interception, as it enables attackers to not only eavesdrop on communications but also to actively manipulate data flows and impersonate legitimate services. In the context of a social media application like Reddit Aww, this exposure could lead to unauthorized access to user accounts, theft of personal information, and potential compromise of user credentials. Attackers could leverage this vulnerability to create fake Reddit servers that appear authentic to users, potentially capturing login information, private messages, or other sensitive user data. The implications are particularly severe given that the application operates on mobile devices where users may be accessing sensitive information in public or unsecured network environments.
Security professionals should recognize this vulnerability as a prime example of insufficient cryptographic implementation in mobile applications, aligning with ATT&CK technique T1041 for data encryption and T1566 for credential access through man-in-the-middle attacks. The vulnerability demonstrates the critical importance of proper certificate pinning and validation in mobile security implementations, as highlighted in industry best practices such as those outlined in the OWASP Mobile Security Project. Organizations should implement immediate mitigations including certificate pinning, proper certificate validation, and regular security audits of mobile applications to prevent similar vulnerabilities from being exploited in production environments.
The remediation approach for this vulnerability requires the application developers to implement proper SSL/TLS certificate validation mechanisms that verify certificate chains against trusted certificate authorities. This includes implementing certificate pinning to ensure that the application only accepts specific certificates or certificate authorities, and establishing proper certificate validation procedures that check certificate expiration dates, issuer information, and certificate signatures. Additionally, the application should be updated to include proper error handling for certificate validation failures, ensuring that any certificate validation issues result in connection termination rather than acceptance of potentially malicious certificates. Security testing should include comprehensive SSL/TLS validation testing to ensure that the application properly handles certificate validation scenarios and rejects invalid certificates as part of its security posture.