CVE-2018-3035 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 low privileged attacker with network access via HTTP to compromise Oracle FLEXCUBE Investor Servicing. Successful attacks of this vulnerability can result in unauthorized creation, deletion or modification access to critical data or all Oracle FLEXCUBE Investor Servicing accessible data as well as unauthorized access to critical data or complete access to all Oracle FLEXCUBE Investor Servicing accessible data. CVSS 3.0 Base Score 8.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 04/10/2023
The vulnerability identified as CVE-2018-3035 resides within Oracle FLEXCUBE Investor Servicing, a critical component of Oracle Financial Services Applications that manages complex financial operations for institutional investors. This vulnerability specifically affects the Infrastructure subcomponent and impacts multiple supported versions including 12.0.4, 12.1.0, 12.3.0, and 12.4.0, representing a significant attack surface across the FLEXCUBE application lifecycle. The flaw manifests as an easily exploitable security weakness that requires minimal privileges for exploitation, making it particularly dangerous in environments where network access is prevalent and monitoring may be insufficient.
The technical nature of this vulnerability stems from inadequate access controls within the HTTP communication layer of the FLEXCUBE Investor Servicing infrastructure. Attackers with low privileged network access can leverage this weakness to execute unauthorized operations against the system's data repository. The vulnerability's classification as CVSS 3.0 Base Score 8.1 reflects the severe impact potential, with high confidentiality and integrity implications that can lead to complete data compromise. The attack vector AV:N indicates network-based exploitation without requiring physical access, while AC:L demonstrates the low complexity required for successful exploitation, making this vulnerability particularly attractive to threat actors.
The operational impact of CVE-2018-3035 extends beyond simple data theft, as successful exploitation enables attackers to perform unauthorized data modification operations including creation, deletion, and modification of critical financial data. This comprehensive access capability means that adversaries can not only steal sensitive investor information but also manipulate transaction records, account balances, and other mission-critical financial data that could result in significant financial losses and regulatory violations. The vulnerability's potential to provide complete access to all system data represents a severe compromise of the organization's financial integrity and regulatory compliance posture.
Organizations affected by this vulnerability should implement immediate mitigations including applying the relevant Oracle Critical Patch Updates, strengthening network access controls, and implementing comprehensive monitoring of HTTP traffic for suspicious activities. The vulnerability's mapping to CWE-284 (Improper Access Control) and its alignment with ATT&CK technique T1078 (Valid Accounts) highlights the importance of principle of least privilege enforcement and robust identity management systems. Security teams should also consider network segmentation strategies and implement intrusion detection systems specifically configured to identify exploitation attempts targeting the FLEXCUBE infrastructure components. The CVSS vector CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N emphasizes the need for urgent remediation as the combination of network accessibility, low privilege requirements, and high impact data compromise creates an extremely dangerous security exposure for financial institutions relying on Oracle FLEXCUBE Investor Servicing for their operations.