CVE-2017-3535 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 and 12.0.3. Easily "exploitable" vulnerability allows unauthenticated 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 read access to a subset of Oracle FLEXCUBE Universal Banking accessible data. CVSS 3.0 Base Score 4.7 (Confidentiality impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N).
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Analysis
by VulDB Data Team • 12/19/2020
The vulnerability identified as CVE-2017-3535 resides within Oracle FLEXCUBE Universal Banking, a critical component of Oracle Financial Services Applications that serves as the backbone for banking operations. This vulnerability specifically affects multiple version streams including 11.3.0, 11.4.0, 12.0.1, 12.0.2, and 12.0.3, indicating a widespread impact across the product lifecycle. The flaw manifests in the Infrastructure subcomponent, which forms the foundational layer supporting core banking functionalities. The CVSS 3.0 scoring of 4.7 reflects a moderate severity level with particular emphasis on confidentiality impacts, demonstrating that unauthorized data access represents the primary concern for this vulnerability.
The technical nature of this vulnerability allows for unauthenticated exploitation through HTTP network connections, presenting a significant risk as it requires no prior authentication credentials from attackers. This characteristic places the vulnerability in the easily exploitable category according to Oracle's classification, meaning that skilled attackers can leverage this flaw without requiring privileged access. The attack vector operates over network access, specifically targeting HTTP protocols, which are commonly used in enterprise banking environments for communication between client applications and backend systems. The requirement for human interaction from a person other than the attacker indicates that social engineering or user manipulation might be necessary to complete the attack, though the core technical vulnerability remains accessible without authentication.
The operational impact of this vulnerability extends beyond the immediate scope of FLEXCUBE Universal Banking, potentially affecting additional products within the Oracle Financial Services ecosystem. This cascading effect represents a particularly concerning aspect of the vulnerability as it suggests that compromising one component could lead to broader system infiltration. Successful exploitation results in unauthorized read access to a subset of accessible data, which according to CWE-284 Access Control Issues, represents a specific class of vulnerabilities where insufficient access controls allow unauthorized information disclosure. The confidentiality impact is rated as low severity within the CVSS framework, but this assessment may underestimate the potential damage to sensitive financial data, customer information, and business-critical records that could be accessed through this vulnerability.
Organizations implementing affected versions of Oracle FLEXCUBE Universal Banking should prioritize immediate remediation efforts through official Oracle patches and updates. The vulnerability's network accessibility and lack of authentication requirements make it particularly attractive to threat actors seeking financial data breaches. Mitigation strategies should include network segmentation to limit HTTP access points, implementing robust firewall rules, and monitoring for unusual network activity patterns that might indicate exploitation attempts. According to ATT&CK framework category T1190 Exploit Public-Facing Application, this vulnerability aligns with techniques that leverage publicly accessible application interfaces to gain unauthorized access to systems. Security teams should also consider implementing intrusion detection systems to monitor for exploitation attempts and establish incident response procedures specifically addressing potential data disclosure scenarios. The vulnerability's classification as a configuration issue rather than a code-level flaw suggests that proper patch management and security hardening practices should be prioritized to prevent exploitation and maintain system integrity across the financial services infrastructure.