CVE-2014-7800 in Daily Green
Summary
by MITRE
The Daily Green (aka it.opentt.blog.dailygreen) application 2014.07 dlygrn 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 • 10/19/2024
The vulnerability identified as CVE-2014-7800 affects the Daily Green Android application version 2014.07 dlygrn, representing a critical security flaw in the application's cryptographic implementation. This issue falls under the category of improper certificate validation, where the application fails to properly verify X.509 certificates presented by SSL servers during secure communications. The vulnerability creates a significant attack surface that enables malicious actors to perform man-in-the-middle attacks against users of the application, compromising the confidentiality and integrity of data transmitted between the mobile device and remote servers.
The technical flaw stems from the application's failure to implement proper certificate chain validation and trust verification mechanisms. When establishing SSL connections, the application should validate that certificates are issued by trusted Certificate Authorities, check certificate expiration dates, and verify that the certificate matches the target server's hostname. However, the Daily Green application bypasses these essential security checks, allowing attackers to present fraudulent certificates that appear legitimate to the application. This weakness directly violates security best practices outlined in industry standards such as CWE-295, which specifically addresses improper certificate validation in secure communications. The vulnerability represents a fundamental breakdown in the application's security architecture, as it undermines the core security guarantees provided by SSL/TLS protocols.
The operational impact of this vulnerability extends beyond simple data interception, creating potential for comprehensive data breaches and system compromise. Attackers can exploit this weakness to intercept sensitive user information including personal data, login credentials, and potentially financial information transmitted through the application. The vulnerability is particularly dangerous in mobile environments where users may access the application over unsecured public networks, making it easier for attackers to position themselves in the communication path. This weakness allows threat actors to conduct persistent surveillance of user activities and manipulate data in transit, potentially leading to identity theft, financial fraud, and unauthorized access to user accounts. The attack vector aligns with techniques described in the ATT&CK framework under T1041, which covers data compression and T1566, which covers credential access through social engineering and network manipulation.
Mitigation strategies for this vulnerability require immediate implementation of proper certificate validation mechanisms within the application. The development team must implement certificate pinning to ensure that the application only accepts certificates from specific trusted authorities or specific certificate fingerprints. Additionally, the application should enforce complete certificate chain validation including checking certificate expiration dates, verifying certificate signatures, and ensuring hostname matching against the certificate. Security patches should include proper error handling for certificate validation failures, preventing the application from proceeding with connections when certificate verification fails. Organizations should also implement network monitoring to detect potential exploitation attempts and consider deploying additional security controls such as network segmentation and intrusion detection systems to protect against unauthorized access. The fix should align with industry standards including OWASP Mobile Top 10 recommendations for secure communication and proper implementation of SSL/TLS protocols.