CVE-2014-7327 in Macau Business
Summary
by MITRE
The Macau Business (aka com.magzter.macaubusiness) application 3.0 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 • 10/02/2024
The vulnerability identified as CVE-2014-7327 represents a critical security flaw in the Macau Business Android application version 3.0, specifically targeting the application's handling of SSL/TLS certificate validation. This weakness falls under the category of inadequate certificate verification mechanisms, which is a well-documented security risk in mobile applications. The application's failure to properly validate X.509 certificates from SSL servers creates a significant attack surface that can be exploited by malicious actors to compromise the integrity of communications between the mobile client and backend servers. This particular vulnerability demonstrates a fundamental flaw in the application's security architecture where trust verification is bypassed during secure communication establishment.
The technical implementation of this vulnerability stems from the application's omission of proper certificate chain validation and trust anchor verification during SSL handshakes. When an Android application fails to validate X.509 certificates, it essentially trusts any certificate presented by a server regardless of its legitimacy or authority. This behavior creates a man-in-the-middle attack vector where attackers can intercept communications by presenting forged certificates that appear legitimate to the vulnerable application. The flaw is particularly dangerous because it affects the core security mechanism of secure communication protocols, undermining the fundamental purpose of SSL/TLS encryption. According to CWE-295, this vulnerability maps directly to "Improper Certificate Validation" which is classified as a high-severity weakness in software security implementations.
The operational impact of this vulnerability extends beyond simple data interception, as it allows attackers to obtain sensitive information through crafted certificate manipulation. Mobile applications that fail to properly verify server certificates expose users to various attack scenarios including credential theft, session hijacking, and data exfiltration. The Macau Business application, being a business-focused platform, likely handles confidential information such as financial data, business communications, and potentially personal user information. Attackers exploiting this vulnerability could gain unauthorized access to corporate data, customer information, or proprietary business intelligence. This risk is particularly concerning for business applications that process sensitive transactions or maintain confidential communications between organizations and their clients.
Mitigation strategies for this vulnerability require immediate implementation of proper certificate validation mechanisms within the application. The recommended approach involves implementing robust certificate pinning techniques that validate certificate chains against trusted root certificates, utilizing Android's built-in certificate validation APIs, and ensuring that the application performs thorough verification of certificate authorities. Security practitioners should implement certificate transparency checks and consider implementing certificate revocation validation to further strengthen the security posture. Organizations should also consider implementing network traffic monitoring to detect suspicious certificate behavior and establish incident response procedures for potential exploitation attempts. This vulnerability aligns with ATT&CK technique T1566 which covers the use of credential harvesting and man-in-the-middle attacks through improper certificate validation, emphasizing the need for comprehensive security controls that address both application-level and network-level protections.