CVE-2017-3476 in FLEXCUBE Private Banking
Summary
by MITRE
Vulnerability in the Oracle FLEXCUBE Private Banking component of Oracle Financial Services Applications (subcomponent: Miscellaneous). Supported versions that are affected are 2.0.0, 2.0.1, 2.2.0.1 and 12.0.1. Easily "exploitable" vulnerability allows low privileged attacker with network access via HTTP to compromise Oracle FLEXCUBE Private Banking. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle FLEXCUBE Private Banking accessible data as well as unauthorized update, insert or delete access to some of Oracle FLEXCUBE Private Banking accessible data. CVSS 3.0 Base Score 7.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N).
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Analysis
by VulDB Data Team • 12/19/2020
The vulnerability identified as CVE-2017-3476 resides within Oracle FLEXCUBE Private Banking, a critical component of Oracle Financial Services Applications that serves as a comprehensive banking solution for private banking operations. This particular flaw manifests in the Miscellaneous subcomponent, which handles various auxiliary functions within the financial services platform. The affected versions 2.0.0, 2.0.1, 2.2.0.1, and 12.0.1 represent widely deployed iterations across financial institutions, making this vulnerability particularly concerning given its potential impact on private banking operations. The vulnerability's classification as easily exploitable indicates that attackers require minimal technical expertise or resources to leverage this weakness effectively.
The technical nature of this vulnerability stems from insufficient access controls and authentication mechanisms within the HTTP-based interface of the FLEXCUBE Private Banking system. This flaw allows low-privileged attackers with network access to bypass normal security controls and gain unauthorized access to sensitive financial data. The vulnerability specifically affects the confidentiality and integrity aspects of the system as outlined in the CVSS 3.0 scoring, where the confidentiality impact is rated as high (C:H) indicating potential access to critical financial data including customer account information, transaction details, and private banking records. The integrity impact rating of low (I:L) suggests that while the primary concern is data exposure, attackers can also modify certain accessible data elements, potentially leading to financial fraud or manipulation of banking records.
The operational impact of this vulnerability extends beyond simple data theft to encompass complete compromise of private banking systems. Attackers exploiting this vulnerability can achieve unauthorized access to all data accessible through the FLEXCUBE Private Banking platform, potentially exposing sensitive customer information and financial records to unauthorized parties. Additionally, the vulnerability enables attackers to perform unauthorized update, insert, or delete operations on specific data elements, creating opportunities for financial fraud, transaction manipulation, or system integrity compromise. This represents a significant risk to financial institutions as private banking systems typically handle highly sensitive information including personal identification details, account balances, transaction histories, and investment portfolios that are critical to customer relationships and regulatory compliance.
The CVSS 3.0 vector (AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N) provides crucial context for understanding the threat landscape, indicating network-based exploitation with low attack complexity and low privilege requirements. The unscoped impact (S:U) suggests that the vulnerability affects the entire system without requiring specific scope limitations, while the high confidentiality impact (C:H) and low integrity impact (I:L) reflect the primary risk profile. This vulnerability aligns with CWE-284 (Improper Access Control) and represents a classic example of insufficient authorization checks that allow privilege escalation through network-based attacks. From an ATT&CK framework perspective, this vulnerability maps to techniques involving privilege escalation and credential access through network-based exploitation, potentially enabling adversaries to establish persistent access to sensitive financial systems.
Organizations should implement immediate mitigations including applying Oracle's security patches and updates specifically addressing this vulnerability, implementing network segmentation to limit access to the affected systems, and strengthening authentication mechanisms for HTTP-based interfaces. Additional security controls should include monitoring network traffic for suspicious HTTP requests, implementing robust access control policies, and conducting regular vulnerability assessments of financial applications. The vulnerability also highlights the importance of maintaining updated security configurations and ensuring that all financial services applications receive timely security patches to prevent exploitation by threat actors targeting private banking systems. Financial institutions should also consider implementing additional security monitoring and incident response procedures specifically tailored to protect private banking applications from network-based attacks targeting authentication and access control mechanisms.