Overview
CVE-2025-64030 identifies a stored cross-site scripting (XSS) vulnerability affecting Eximbills Enterprise version 4.1.5, built on 2020-10-30. This flaw allows an authenticated attacker to inject malicious JavaScript code into the application’s database. When other users access the affected data, the injected script executes in their browsers, potentially leading to session hijacking, data theft, or other malicious activities.
Technical Details
The vulnerability resides within the /EximBillWeb/servlets/WSTrxManager endpoint. The TMPL_INFO parameter is susceptible to stored XSS. User-supplied input to this parameter is not properly sanitized before being stored in the server-side database. When this unsanitized data is subsequently retrieved and displayed to other users, the embedded JavaScript code is executed within their browser context.
Example malicious payload:
<script>alert('XSS Vulnerability!');</script>An attacker can inject this payload into the TMPL_INFO parameter. When another user views the transaction details where this payload is stored, the alert box will appear, demonstrating the successful execution of arbitrary JavaScript.
CVSS Analysis
Currently, a CVSS score and severity rating are not available for CVE-2025-64030. However, due to the nature of stored XSS vulnerabilities, the potential impact is significant. A CVSS score will likely be assigned as the vulnerability is further investigated. It is likely to be high since XSS is a common and dangerous type of vulnerability.
Possible Impact
Successful exploitation of this stored XSS vulnerability could lead to several severe consequences:
- Account Compromise: Attackers could steal user session cookies, allowing them to impersonate legitimate users and gain unauthorized access to sensitive data.
- Data Theft: Malicious scripts could be used to extract sensitive information displayed on the page, such as financial details or personal data.
- Malware Distribution: The injected script could redirect users to malicious websites, leading to malware infections.
- Defacement: The attacker could alter the appearance of the application, causing reputational damage.
Mitigation and Patch Steps
Until an official patch is released by ChinaSystems, the following mitigation steps are recommended:
- Input Validation: Implement rigorous input validation on the server-side, especially for the
TMPL_INFOparameter. Sanitize all user-supplied data by encoding or removing potentially malicious characters and HTML tags. - Output Encoding: Encode all data retrieved from the database before displaying it to users. Use appropriate escaping mechanisms to prevent the execution of injected JavaScript code.
- Web Application Firewall (WAF): Deploy a WAF to detect and block malicious requests targeting the
/EximBillWeb/servlets/WSTrxManagerendpoint. - Regular Security Audits: Conduct regular security audits and penetration testing to identify and address vulnerabilities proactively.
- Contact the Vendor: Urge ChinaSystems to release a patch addressing this vulnerability as soon as possible.
