CVE-2014-6836 in DS photo+
Summary
by MITRE
The DS photo+ (aka com.synology.dsphoto) application 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 • 09/18/2024
The vulnerability identified as CVE-2014-6836 affects the DS photo+ application version 3.3 for Android devices, representing a critical security flaw in the application's implementation of secure communication protocols. This issue stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a significant attack surface that malicious actors can exploit to compromise user data and system integrity. The vulnerability specifically impacts the application's ability to establish trust with remote servers, fundamentally undermining the security assurances that SSL/TLS encryption is designed to provide.
The technical flaw manifests as a complete absence of certificate verification within the application's SSL implementation, which aligns with CWE-295, "Improper Certificate Validation." This weakness allows attackers to perform man-in-the-middle attacks by presenting forged certificates that appear legitimate to the vulnerable application. The application accepts any certificate without proper validation, including those signed by untrusted Certificate Authorities or certificates that have been tampered with, effectively nullifying the cryptographic protection that SSL/TLS is meant to establish. This behavior creates a dangerous trust model where the application cannot distinguish between legitimate servers and malicious imposters.
The operational impact of this vulnerability extends beyond simple data interception, as it enables attackers to obtain sensitive information through crafted certificates that can be used to access user photos, personal data, and potentially other system resources that the application may have access to. The vulnerability is particularly concerning in mobile environments where users often connect to public Wi-Fi networks, making the attack surface even more expansive. Attackers can exploit this weakness to establish persistent surveillance capabilities, data exfiltration channels, or even use the compromised application as a foothold for further attacks within the user's network environment.
Mitigation strategies for this vulnerability should focus on implementing proper certificate validation mechanisms within the application's SSL/TLS stack. The recommended approach includes enforcing certificate chain validation, implementing certificate pinning for critical connections, and ensuring that the application verifies certificate signatures against trusted Certificate Authorities. Organizations should also consider implementing network-level protections such as SSL inspection and monitoring for suspicious certificate behavior. This vulnerability demonstrates the critical importance of following security best practices outlined in the OWASP Mobile Security Project and aligns with ATT&CK technique T1566, "Phishing", as it enables attackers to create convincing fraudulent connections that can deceive users into believing they are communicating with legitimate services. The fix requires comprehensive code review and security testing to ensure that all SSL/TLS connections properly validate certificates and maintain the integrity of encrypted communications.