CVE-2019-2736 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 12.0.1, 12.0.3, 12.0.4, 12.1.0, 12.3.0, 12.4.0, 14.0.0 and 14.1.0. 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 • 07/05/2020
The vulnerability identified as CVE-2019-2736 resides within Oracle FLEXCUBE Investor Servicing, a critical component of Oracle Financial Services Applications that handles investor servicing operations for financial institutions. This vulnerability specifically affects multiple versions of the FLEXCUBE platform including 12.0.1, 12.0.3, 12.0.4, 12.1.0, 12.3.0, 12.4.0, 14.0.0, and 14.1.0, representing a significant attack surface across the financial services application ecosystem. The flaw manifests as an easily exploitable security weakness that enables unauthenticated attackers to compromise the system through network-based HTTP access, making it particularly dangerous for organizations operating in regulated financial environments where security controls are paramount.
The technical nature of this vulnerability stems from insufficient authentication and authorization controls within the infrastructure component of FLEXCUBE Investor Servicing, allowing attackers to perform unauthorized operations against the system's data. The CVSS score of 6.1 reflects the moderate severity of the issue, with confidentiality and integrity impacts rated as low but still significant given the financial nature of the data involved. The vulnerability requires human interaction from users other than the attacker, suggesting that social engineering or phishing techniques might be employed to facilitate exploitation, though the core flaw remains accessible via network connections without requiring prior system compromise or elevated privileges. The attack vector AV:N indicates network accessibility, while AC:L demonstrates low complexity requirements for exploitation, making this vulnerability particularly concerning for organizations with exposed network services.
The operational impact of CVE-2019-2736 extends beyond the immediate FLEXCUBE Investor Servicing component, as successful exploitation can affect additional products within the Oracle Financial Services Applications suite. Attackers can achieve unauthorized update, insert, or delete operations against sensitive investor data, while also gaining unauthorized read access to subsets of accessible data. This dual capability for data modification and reading creates substantial risk for financial institutions managing investor accounts, portfolio information, and transaction records that require strict confidentiality and integrity protections. The vulnerability's potential to impact multiple products within the Oracle Financial Services Applications ecosystem amplifies its operational consequences, as a single exploit could compromise interconnected financial systems.
Organizations affected by this vulnerability should implement immediate mitigations including network segmentation to limit access to FLEXCUBE services, deploying firewalls and access controls to restrict HTTP access, and applying available Oracle patches and updates to address the authentication and authorization weaknesses. The vulnerability aligns with CWE-287 which addresses improper authentication issues, and maps to ATT&CK techniques related to credential access and privilege escalation through network-based attacks. Security teams should also consider implementing network monitoring to detect suspicious HTTP traffic patterns and establish incident response procedures to address potential exploitation attempts. Regular vulnerability assessments and penetration testing should be conducted to identify similar weaknesses in the broader Oracle Financial Services Applications environment, ensuring comprehensive protection against similar attack vectors that could compromise investor data integrity and confidentiality.