CVE-2014-6803 in Bank of Moscow EIRTS Rent
Summary
by MITRE
The Bank of Moscow EIRTS Rent (aka ru.bm.rbs.android) application 1.0.0 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 • 09/17/2024
The vulnerability identified as CVE-2014-6803 affects the Bank of Moscow EIRTS Rent mobile application version 1.0.0 for Android devices, representing a critical security flaw in the application's cryptographic implementation. This weakness stems from the application's failure to properly validate X.509 certificates during SSL/TLS connections, creating a fundamental breach in the security infrastructure that protects sensitive financial data transmission. The vulnerability specifically targets the certificate verification process that should establish trust between the mobile client and remote banking servers, allowing malicious actors to exploit this gap in security protocols.
The technical flaw manifests as a complete absence of certificate chain validation within the application's SSL implementation, which directly violates established security standards and best practices for secure communication. According to CWE-295, this represents a weakness in certificate validation where the application fails to properly verify the authenticity and integrity of SSL certificates presented by servers. The vulnerability creates a man-in-the-middle attack vector that enables attackers to present fraudulent certificates that the application will accept without proper validation. This allows adversaries to intercept, modify, or redirect sensitive data transmitted between the mobile application and banking servers, potentially compromising customer financial information, login credentials, and other confidential data.
The operational impact of this vulnerability is severe and multifaceted, particularly within the financial services sector where data integrity and confidentiality are paramount. Mobile banking applications process highly sensitive information including account numbers, transaction details, personal identification data, and authentication credentials that require robust cryptographic protection. Attackers exploiting this vulnerability could establish transparent proxy connections to intercept and manipulate financial transactions, steal user credentials, or redirect funds to malicious accounts. The attack surface extends beyond simple data theft to include potential service disruption and reputational damage for the financial institution. According to ATT&CK framework technique T1041, this vulnerability enables adversaries to establish persistent access and data exfiltration capabilities through network traffic manipulation.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security architecture improvements. The primary fix involves implementing proper certificate validation mechanisms that verify certificate chains against trusted certificate authorities, implement certificate pinning for critical connections, and ensure that all SSL/TLS connections perform thorough certificate verification before establishing secure communication channels. Organizations should also implement certificate transparency monitoring and establish automated security testing protocols to detect similar vulnerabilities in mobile applications. The remediation process should include comprehensive code review of cryptographic implementations, integration of established security libraries that properly handle certificate validation, and regular security assessments of mobile application security posture. Additionally, the application should implement proper error handling for certificate validation failures to prevent the application from continuing operations with untrusted certificates, thus preventing the exploitation of this vulnerability in production environments.