CVE-2018-3030 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 ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle FLEXCUBE Investor Servicing. CVSS 3.0 Base Score 6.5 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H).
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Analysis
by VulDB Data Team • 04/10/2023
The vulnerability identified as CVE-2018-3030 resides within Oracle FLEXCUBE Investor Servicing, a critical component of Oracle Financial Services Applications designed for investment management and servicing operations. This specific weakness manifests in the Infrastructure subcomponent of the FLEXCUBE platform, affecting multiple version releases including 12.0.4, 12.1.0, 12.3.0, and 12.4.0. The flaw represents a significant security concern for financial institutions relying on this system for their investor servicing operations, as it exposes a pathway for malicious actors to disrupt critical business functions.
The technical nature of this vulnerability stems from inadequate input validation and error handling mechanisms within the HTTP processing layer of the FLEXCUBE Investor Servicing component. Attackers with low privilege levels and network access can exploit this weakness by crafting malicious HTTP requests that trigger buffer overflow conditions or memory corruption scenarios. The vulnerability's classification as easily exploitable indicates that the attack vector requires minimal specialized knowledge or resources to execute successfully, making it particularly dangerous in production environments where such systems handle sensitive financial data and transactions. The CVSS 3.0 scoring system rates this vulnerability at 6.5, reflecting a high severity impact primarily focused on availability disruption.
From an operational perspective, successful exploitation of CVE-2018-3030 can result in complete denial of service conditions that effectively incapacitate the FLEXCUBE Investor Servicing system. The vulnerability enables attackers to cause either temporary hangs or frequent crashes that can render the entire investment servicing platform unavailable to legitimate users and operations staff. This disruption can have cascading effects throughout the financial institution's operations, potentially impacting client services, transaction processing, and regulatory compliance activities. The availability impact is particularly severe given that investor servicing platforms typically operate as mission-critical systems supporting core business functions and customer relationships.
Security professionals should consider this vulnerability in the context of the MITRE ATT&CK framework, where it aligns with the T1499 technique category related to network denial of service attacks. The vulnerability also corresponds to CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which addresses heap-based buffer overflow scenarios. Organizations should implement immediate mitigations including applying the vendor-provided patches, implementing network segmentation controls, and deploying intrusion detection systems to monitor for suspicious HTTP traffic patterns. Additional defensive measures should encompass regular security assessments, enhanced monitoring of system availability metrics, and comprehensive incident response procedures to address potential exploitation attempts and minimize business disruption impacts.