CVE-2019-2839 in FLEXCUBE Universal Banking
Summary
by MITRE
Vulnerability in the Oracle FLEXCUBE Universal Banking component of Oracle Financial Services Applications (subcomponent: Infrastructure). Supported versions that are affected are 12.1.0-12.4.0 and 14.0.0-14.2.0. Difficult to exploit vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle FLEXCUBE Universal Banking. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle FLEXCUBE Universal Banking accessible data. CVSS 3.0 Base Score 5.3 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N).
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Analysis
by VulDB Data Team • 07/05/2020
The vulnerability identified as CVE-2019-2839 resides within Oracle FLEXCUBE Universal Banking, a comprehensive financial services application suite that serves as a core banking platform for major financial institutions worldwide. This particular flaw affects the Infrastructure subcomponent of Oracle Financial Services Applications, specifically targeting versions ranging from 12.1.0 through 12.4.0 and 14.0.0 through 14.2.0. The vulnerability represents a significant security concern due to its potential to enable unauthorized access to sensitive financial data, making it particularly dangerous for organizations handling critical banking operations and customer information.
The technical nature of this vulnerability manifests as a low-privileged attacker with network access via HTTP protocol being able to compromise the targeted system. The CVSS score of 5.3 indicates a medium severity classification with a base score that reflects the confidentiality impact, though the attack complexity is rated as high, suggesting that exploitation requires specific conditions and technical knowledge. The vulnerability's accessibility through HTTP connections means that attackers could potentially leverage this weakness from external networks without requiring physical access or elevated privileges, making it particularly concerning for organizations with exposed web services. The attack vector AV:N indicates network-based exploitation, while the high attack complexity AC:H suggests that successful exploitation requires significant technical expertise and specific conditions to be met.
The operational impact of this vulnerability extends beyond simple data exposure, potentially allowing attackers to gain complete access to all data accessible through the Oracle FLEXCUBE Universal Banking system. This comprehensive access capability represents a critical risk for financial institutions, as it could enable unauthorized transactions, data manipulation, or complete system compromise. The confidentiality impact is rated as high, indicating that successful exploitation could result in unauthorized access to critical financial data, customer information, transaction records, and other sensitive banking data that organizations are legally and operationally required to protect. This vulnerability essentially undermines the fundamental security controls that financial institutions rely upon to maintain data integrity and customer trust.
Organizations affected by this vulnerability should implement immediate mitigation strategies including applying the relevant Oracle security patches and updates as issued in their critical patch updates. Network segmentation and access controls should be strengthened to limit exposure of the vulnerable components to untrusted networks, while monitoring systems should be enhanced to detect anomalous network activity originating from HTTP connections. The vulnerability aligns with CWE-284 (Improper Access Control) and may be related to ATT&CK techniques involving initial access through network service exploitation and privilege escalation. Security teams should conduct comprehensive vulnerability assessments to identify all instances of affected software versions and implement network monitoring to detect potential exploitation attempts, as the vulnerability's characteristics make it particularly attractive to threat actors targeting financial services organizations. Regular security audits and penetration testing should be conducted to ensure that additional security controls are in place to protect against similar vulnerabilities that could compromise the integrity and confidentiality of financial data systems.