CVE-2023-21903 in Banking Virtual Account Management
Summary
by MITRE • 04/18/2023
Vulnerability in the Oracle Banking Virtual Account Management product of Oracle Financial Services Applications (component: OBVAM Internal Tfr Domain). Supported versions that are affected are 14.5, 14.6 and 14.7. Difficult to exploit vulnerability allows high privileged attacker with network access via HTTP to compromise Oracle Banking Virtual Account Management. Successful attacks require human interaction from a person other than the attacker. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Banking Virtual Account Management accessible data as well as unauthorized update, insert or delete access to some of Oracle Banking Virtual Account Management accessible data and unauthorized ability to cause a partial denial of service (partial DOS) of Oracle Banking Virtual Account Management. CVSS 3.1 Base Score 5.3 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:L/A:L).
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Analysis
by VulDB Data Team • 05/11/2023
The vulnerability identified as CVE-2023-21903 resides within Oracle Banking Virtual Account Management, specifically within the OBVAM Internal Tfr Domain component of Oracle Financial Services Applications. This security flaw affects versions 14.5, 14.6, and 14.7 of the software, representing a significant risk to financial institutions that rely on this platform for virtual account management operations. The vulnerability's classification as difficult to exploit indicates that while the attack vector requires specific conditions, the potential impact on organizational security is substantial enough to warrant immediate attention. The CVSS 3.1 scoring system assigns this vulnerability a base score of 5.3, reflecting moderate severity with impacts across confidentiality, integrity, and availability domains.
The technical nature of this vulnerability stems from insufficient access controls within the internal transfer domain functionality, allowing a high-privileged attacker with network access via HTTP to potentially compromise the system. The requirement for human interaction from individuals other than the attacker suggests that social engineering or targeted manipulation may be necessary to execute successful exploitation, making this vulnerability particularly concerning for organizations that may be susceptible to insider threats or targeted attacks. The attack vector operates through HTTP network protocols, indicating that the vulnerability could be exploited from external network positions, potentially allowing attackers to bypass traditional network security measures.
The operational impact of successful exploitation presents multiple serious consequences for affected organizations. Unauthorized access to critical data within Oracle Banking Virtual Account Management could result in exposure of sensitive financial information, including customer account details, transaction histories, and other confidential banking data. Complete access to all accessible data represents a catastrophic scenario where attackers could potentially view, modify, or delete any information within the system. Additionally, unauthorized update, insert, or delete access to some data within the platform could lead to data integrity compromise, potentially allowing attackers to manipulate transaction records or account balances. The partial denial of service capability introduces additional operational risks, as attackers could disrupt system availability for legitimate users, affecting business continuity and customer service operations.
Organizations should implement comprehensive mitigation strategies to address this vulnerability, beginning with immediate patching of affected systems to the latest supported versions. Network segmentation and access controls should be strengthened to limit exposure of the vulnerable component to unauthorized network access. The principle of least privilege should be enforced more rigorously, ensuring that only authorized personnel have access to the affected system components. Monitoring and logging mechanisms should be enhanced to detect anomalous access patterns that might indicate exploitation attempts, particularly focusing on HTTP traffic to the vulnerable domain. Security awareness training should be reinforced to address the human interaction requirement, helping staff recognize and report potential social engineering attempts that could facilitate exploitation. This vulnerability aligns with CWE-284 (Improper Access Control) and may map to ATT&CK techniques involving privilege escalation and credential access, emphasizing the need for layered security approaches that address both technical controls and human factors in security operations.