CVE-2018-2898 in FLEXCUBE Investor Servicing
Summary
by MITRE
Vulnerability in the Oracle FLEXCUBE Investor Servicing component of Oracle Financial Services Applications (subcomponent: Infrastructure). Supported versions that are affected are 12.0.4, 12.1.0, 12.3.0 and 12.4.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle FLEXCUBE Investor Servicing. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle FLEXCUBE Investor Servicing, attacks may significantly impact additional products. Successful attacks of this vulnerability can result in unauthorized update, insert or delete access to some of Oracle FLEXCUBE Investor Servicing accessible data as well as unauthorized read access to a subset of Oracle FLEXCUBE Investor Servicing accessible data. CVSS 3.0 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).
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Analysis
by VulDB Data Team • 04/10/2023
The vulnerability identified as CVE-2018-2898 resides within Oracle FLEXCUBE Investor Servicing, a critical component of Oracle Financial Services Applications that handles investor servicing operations. This particular weakness affects multiple version streams including 12.0.4, 12.1.0, 12.3.0, and 12.4.0, representing a significant attack surface across the financial services application ecosystem. The vulnerability's classification as easily exploitable indicates that attackers can leverage this flaw with minimal technical sophistication, making it particularly dangerous for financial institutions that rely on these systems for processing sensitive investor data and transactions. The attack vector operates through HTTP network connections, requiring no authentication credentials from the attacker's perspective, which fundamentally undermines the security posture of affected systems.
The technical flaw manifests as a security weakness in the infrastructure subcomponent of Oracle FLEXCUBE Investor Servicing that permits unauthorized access to system resources without proper authentication. This vulnerability operates through a combination of network-based attacks and requires human interaction from individuals other than the attacker, suggesting that social engineering or user manipulation may be necessary to initiate successful exploitation. The attack mechanism leverages the HTTP protocol to access vulnerable components, potentially allowing attackers to perform unauthorized operations on the system. The CVSS 3.0 scoring of 6.1 reflects the moderate severity of the impact, with specific scores indicating low attack complexity, no privileges required, and the need for user interaction, while the scope of impact extends beyond the immediate component to potentially affect additional products within the Oracle Financial Services ecosystem. The vulnerability's classification under CWE categories related to insufficient authentication and improper access control further emphasizes the fundamental security weakness in the system's access controls.
The operational impact of CVE-2018-2898 extends beyond simple data breaches to encompass significant integrity and confidentiality risks for financial institutions using affected Oracle FLEXCUBE versions. Successful exploitation allows attackers to perform unauthorized update, insert, or delete operations against sensitive data within the investor servicing system, potentially leading to financial losses, regulatory violations, and reputational damage. The unauthorized read access capability enables attackers to extract sensitive investor information including personal financial details, transaction histories, and other confidential data that could be monetized or used for further attacks. The fact that this vulnerability can significantly impact additional products within the Oracle Financial Services Applications suite means that compromise of one system could potentially lead to cascading security failures across multiple interconnected financial services platforms. Organizations may face substantial compliance challenges as regulatory frameworks such as pci dss, soc 2, and various financial industry standards require robust protection of sensitive data, making this vulnerability particularly concerning for institutions under regulatory scrutiny.
Mitigation strategies for CVE-2018-2898 should prioritize immediate patch management through Oracle's security updates and advisories, as well as network-level controls to restrict access to affected systems. Organizations should implement network segmentation to limit access to the vulnerable FLEXCUBE Investor Servicing components, deploy web application firewalls to monitor and filter HTTP traffic, and establish robust monitoring procedures to detect anomalous access patterns. The implementation of principle of least privilege access controls, mandatory access controls, and regular security assessments should be enforced to minimize the attack surface. Additionally, organizations should conduct comprehensive vulnerability assessments across their entire Oracle Financial Services Applications deployment to identify and remediate similar vulnerabilities. The ATT&CK framework's techniques related to credential access and privilege escalation should be considered when developing defensive strategies, as this vulnerability could potentially be leveraged to establish persistent access to financial systems. Regular security awareness training for personnel should be implemented to address the human interaction requirement for exploitation, while incident response procedures should be updated to include specific protocols for handling such vulnerabilities in financial services environments.