CVE-2018-3019 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 11.3.0, 11.4.0, 12.0.1, 12.0.2, 12.0.3, 12.1.0, 12.2.0, 12.3.0, 12.4.0, 14.0.0 and 14.1.0. Easily exploitable vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle FLEXCUBE Universal Banking. Successful attacks require human interaction from a person other than the attacker and while the vulnerability is in Oracle FLEXCUBE Universal Banking, 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 Universal Banking accessible data as well as unauthorized read access to a subset of Oracle FLEXCUBE Universal Banking accessible data. CVSS 3.0 Base Score 5.4 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/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-2018-3019 resides within Oracle FLEXCUBE Universal Banking, a critical component of Oracle Financial Services Applications that serves as the backbone for banking operations. This particular flaw exists in the Infrastructure subcomponent of the FLEXCUBE Universal Banking system, affecting multiple version releases including 11.3.0 through 14.1.0, indicating a widespread exposure across the product lifecycle. The vulnerability represents a significant security weakness that could potentially impact financial institutions relying on this platform for their core banking operations.
This vulnerability manifests as an easily exploitable flaw that requires minimal technical sophistication from an attacker. The attack vector operates through HTTP network connections, making it accessible to threat actors with basic network access capabilities. The security posture is further weakened by the requirement for human interaction from individuals other than the attacker, suggesting social engineering or phishing elements may be involved in successful exploitation attempts. The vulnerability's classification as low privilege access means that attackers can potentially compromise the system without requiring elevated credentials, making the attack surface more expansive.
The operational impact of this vulnerability extends beyond the immediate FLEXCUBE Universal Banking component, as indicated by the CVSS vector's "S:C" classification suggesting potential impact to additional products. Attackers who successfully exploit this vulnerability can achieve unauthorized modification capabilities including update, insert, and delete operations against sensitive data within the system. Additionally, the vulnerability enables unauthorized read access to portions of data that should normally be restricted, creating a dual threat to both data integrity and confidentiality. The CVSS 3.0 base score of 5.4 reflects the moderate severity of the impact, with confidentiality and integrity being the primary affected domains.
The vulnerability's technical characteristics align with CWE-284 (Improper Access Control) and CWE-20 (Improper Input Validation) categories, indicating weak access controls and insufficient input validation mechanisms within the application. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and data manipulation, potentially enabling adversaries to conduct financial fraud or data breaches. Organizations should implement immediate mitigations including network segmentation, access controls, and monitoring protocols to detect unauthorized access attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in the broader Oracle Financial Services Applications ecosystem. The affected versions represent a critical window for remediation, as the vulnerability's persistence across multiple releases suggests a fundamental design flaw requiring comprehensive patch management strategies.