CVE-2023-30454 in ebankIT
Summary
by MITRE • 04/28/2023
An issue was discovered in ebankIT before 7. Document Object Model based XSS exists within the /Security/Transactions/Transactions.aspx endpoint. Users can supply their own JavaScript within the ctl100$ctl00MainContent$TransactionMainContent$accControl$hdnAccountsArray POST parameter that will be passed to an eval() function and executed upon pressing the continue button.
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Analysis
by VulDB Data Team • 12/23/2025
The vulnerability identified as CVE-2023-30454 represents a critical cross-site scripting flaw within the ebankIT application ecosystem, specifically affecting versions prior to 7. This security weakness resides in the /Security/Transactions/Transactions.aspx endpoint where user-supplied input is improperly sanitized and subsequently executed within a dangerous JavaScript context. The vulnerability manifests through the ctl100$ctl00MainContent$TransactionMainContent$accControl$hdnAccountsArray POST parameter, which serves as an entry point for malicious actors to inject arbitrary JavaScript code that will be executed in the victim's browser context.
The technical implementation of this vulnerability follows a classic DOM-based XSS pattern where the application accepts user input through a hidden field parameter and directly incorporates it into an eval() function call without proper sanitization or encoding. This design flaw creates a direct code execution pathway where any JavaScript payload submitted through the hdnAccountsArray parameter will be evaluated and executed when users press the continue button on the transaction page. The use of eval() function represents a particularly dangerous practice from a security perspective as it allows arbitrary code execution and bypasses many standard input validation mechanisms.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it provides attackers with the capability to execute arbitrary JavaScript code within the context of authenticated user sessions. This enables sophisticated attack vectors including but not limited to credential theft, session manipulation, data exfiltration, and potentially full system compromise depending on the privileges of the targeted user. The vulnerability affects the application's security model by undermining the trust boundary between user input and application execution, allowing malicious actors to impersonate legitimate users and perform unauthorized transactions.
Security professionals should recognize this vulnerability as a variant of CWE-79 - Improper Neutralization of Input During Web Page Generation, specifically manifesting as a DOM-based XSS attack. The attack pattern aligns with ATT&CK technique T1059.007 - Command and Scripting Interpreter: JavaScript, where adversaries leverage JavaScript execution capabilities to maintain persistence and escalate privileges. The vulnerability's exploitation requires minimal prerequisites beyond access to the affected endpoint and basic understanding of the application's parameter structure, making it particularly dangerous in environments where users have legitimate access to transaction processing functionality.
Mitigation strategies should focus on immediate input validation and sanitization of all user-supplied parameters, particularly those used in dynamic code execution contexts. The implementation of Content Security Policy (CSP) headers should be enforced to prevent unauthorized script execution, while the elimination of eval() usage in favor of safer parsing mechanisms like JSON.parse() should be prioritized. Additionally, proper output encoding and sanitization of all parameters before they are rendered in the browser context will provide defense-in-depth protection. Regular security testing including dynamic application security testing and manual penetration testing should be implemented to identify similar vulnerabilities in other application components and ensure proper input validation across all user-facing interfaces.