CVE-2017-3477 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 12.0.0 and 12.1.0. Difficult to exploit 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 update, insert or delete access to some of Oracle FLEXCUBE Private Banking accessible data as well as unauthorized read access to a subset of Oracle FLEXCUBE Private Banking accessible data. CVSS 3.0 Base Score 4.2 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N).
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Analysis
by VulDB Data Team • 12/19/2020
The vulnerability identified as CVE-2017-3477 resides within Oracle FLEXCUBE Private Banking, a critical component of Oracle Financial Services Applications designed for private banking operations. This vulnerability specifically affects version 12.0.0 and 12.1.0 of the software, representing a significant security weakness that could be exploited by adversaries with minimal privileges. The flaw exists within the Miscellaneous subcomponent, which handles various auxiliary functions within the private banking framework, making it a potential entry point for attackers seeking to compromise sensitive financial data. The vulnerability's classification as difficult to exploit indicates that while the attack vector is not trivial, it remains a serious concern for financial institutions relying on this platform. The security implications extend beyond simple data access, as the vulnerability could enable unauthorized modifications to critical banking records.
The technical nature of this vulnerability stems from insufficient access controls and input validation mechanisms within the HTTP-based interface of the FLEXCUBE Private Banking application. Attackers with low privilege levels and network access can leverage this weakness to perform unauthorized operations including data modification, insertion, and deletion within specific portions of the system. The vulnerability's impact is measured across multiple security dimensions, with CVSS 3.0 scoring indicating a moderate severity level of 4.2. The attack vector requires network connectivity via HTTP, suggesting that the vulnerability could be exploited remotely without requiring physical access to the system. The low privilege requirement indicates that even users with minimal system permissions could potentially leverage this weakness, making the attack surface broader than initially apparent.
The operational impact of this vulnerability presents significant risks to financial institutions using Oracle FLEXCUBE Private Banking, particularly in environments where data integrity and confidentiality are paramount. Successful exploitation could allow attackers to access sensitive customer information, modify transaction records, or manipulate financial data in ways that could compromise the integrity of the entire banking system. The confidentiality impact is rated as low, suggesting that while attackers can access certain data subsets, they may not gain access to all system data. However, the integrity impact rating of low indicates that the modification capabilities could be used to corrupt financial records, potentially leading to significant financial losses or regulatory compliance issues. The absence of availability impact suggests that this vulnerability primarily affects data integrity and confidentiality rather than system availability, though the potential for data manipulation could indirectly impact service delivery.
Organizations should implement immediate mitigations including patching the affected versions to the latest available releases, implementing network segmentation to limit access to the vulnerable application, and establishing enhanced monitoring for suspicious HTTP traffic patterns. Access controls should be strengthened to ensure that only authorized personnel can access the affected components, while network firewalls should be configured to restrict access to the vulnerable HTTP interfaces. Security teams should also conduct thorough audits of user permissions and implement principle of least privilege controls to minimize potential damage from compromised accounts. The vulnerability aligns with CWE-284 Access Control Issues, specifically focusing on inadequate access control mechanisms, and could be mapped to ATT&CK technique T1078 Valid Accounts for lateral movement and privilege escalation. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in related financial applications and ensure comprehensive protection against evolving threats.