CVE-2023-21905 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: Routing Hub). Supported versions that are affected are 14.5, 14.6 and 14.7. Easily exploitable 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 creation, deletion or modification access to critical data or all Oracle Banking Virtual Account Management accessible data as well as unauthorized access to critical data or complete access to all Oracle Banking Virtual Account Management accessible data. CVSS 3.1 Base Score 6.1 (Confidentiality and Integrity impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N).
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Analysis
by VulDB Data Team • 05/10/2023
The vulnerability identified as CVE-2023-21905 resides within Oracle Banking Virtual Account Management, specifically within the Routing Hub component of Oracle Financial Services Applications. This flaw affects versions 14.5, 14.6, and 14.7, representing a significant security risk for financial institutions relying on these systems for critical banking operations. The vulnerability operates at the application layer and is classified as easily exploitable, meaning that attackers with minimal technical expertise can leverage it to compromise the targeted system. The security posture is further weakened by the requirement for high privileged access, indicating that the vulnerability may be accessible to users with elevated permissions within the system, though the attack vector remains through HTTP network connections.
The technical nature of this vulnerability manifests through a combination of privilege escalation and data manipulation capabilities that directly impact the confidentiality and integrity of financial data. According to CVSS 3.1 scoring, the base score of 6.1 reflects a medium severity threat with significant impacts to both confidentiality and integrity, while maintaining a low attack complexity and requiring high privileges from an attacker perspective. The CVSS vector (AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:N) indicates that network-based attacks are possible, attack complexity is low, the attacker requires high privileges, human interaction is necessary, and the scope of impact extends beyond the vulnerable component to affect the entire system. This vulnerability specifically targets critical data within the virtual account management system, potentially enabling unauthorized access to sensitive financial information and complete control over account modifications.
The operational impact of CVE-2023-21905 extends beyond immediate data compromise to encompass potential financial fraud, regulatory violations, and reputational damage for affected organizations. The ability to create, delete, or modify critical data without proper authorization represents a severe threat to financial institution integrity, particularly when considering that the vulnerability affects systems managing virtual accounts that likely contain sensitive customer financial information. The requirement for human interaction suggests that successful exploitation may involve social engineering or targeted attacks against specific personnel with elevated privileges, making the vulnerability particularly dangerous in environments where insider threats are a concern. This aligns with ATT&CK framework concept of privilege escalation and credential access, where attackers leverage system weaknesses to gain unauthorized access to sensitive resources. Organizations utilizing Oracle Financial Services Applications must consider the implications of this vulnerability within their broader security architecture, particularly given the potential for cascading effects that could compromise multiple interconnected systems.
Mitigation strategies for CVE-2023-21905 should focus on immediate patch management and access control enhancements. Organizations must prioritize updating to patched versions of Oracle Banking Virtual Account Management, specifically addressing the Routing Hub component vulnerabilities. Network segmentation and access controls should be strengthened to limit HTTP access to only authorized personnel and systems, implementing principle of least privilege for all users with access to the vulnerable application. Additional security measures should include enhanced monitoring for unusual account modifications, implementation of multi-factor authentication for high-privilege accounts, and regular security assessments of financial applications. The vulnerability's classification under CWE categories related to privilege escalation and insufficient authorization highlights the need for comprehensive access control reviews. Organizations should also consider implementing security awareness training to reduce the risk of social engineering attacks that may exploit the human interaction requirement, as this vulnerability specifically targets scenarios where attacker interaction with system users is necessary for successful exploitation.