A vulnerability (CVE-2025-1337) has been discovered in Eastnets PaymentSafe 2.5.26., a popular payment transaction software. This vulnerability has been classified as problematic as it affects the unknown part of the component BIC (Bank Identifier Code) Search, leading to a Cross Site Scripting (XSS) exploit. This vulnerability allows an attacker to inject malicious scripts into otherwise trusted web applications. The attack can be initiated remotely, which means that the attacker can exploit the vulnerability from a remote location without any need for local access. The vendor, Eastnets, has been contacted early about this disclosure but has not yet responded or provided a patch or workaround.

Exploit Details

The Cross Site Scripting (XSS) vulnerability lies in the BIC Search component of the Eastnets PaymentSafe software. An attacker can manipulate user input in the BIC search field to inject malicious code (HTML or JavaScript), which will then be executed by the web application when the search result is presented to the user. This can lead to several issues, such as stealing user credentials, session hijacking, or even defacing the victim's website.

Here's an example of a simple malicious code that demonstrates the XSS exploit

<!-- Attack Payload -->
<script>alert('XSS Exploit Successful');</script>

<!-- Malicious User Input in BIC Search Field -->
EASTBANK123<script>alert('XSS Exploit Successful');</script>

Original References

1. CVE-2025-1337 - National Vulnerability Database (NVD)
2. XSS (Cross Site Scripting) - OWASP Top Ten Project)
3. BIC (Bank Identifier Code) - SWIFT Information

Impact and Mitigation

The impact of this vulnerability is high as it presents a high risk of information theft and unauthorized access to user accounts. Possible mitigations, until the vendor provides a fix, are:

1. Input Validation: Ensure that the BIC Search component validates and sanitizes user input properly, mitigating the possibility of malicious code entering the system.
2. Content Security Policy (CSP): Implement a CSP, which helps prevent Cross Site Scripting by restricting the sources of scripts and other resources that are allowed to execute on the victim's web application.
3. Secure Coding Practices: Train developers to follow secure coding practices to ensure that vulnerabilities like Cross-Site Scripting do not make their way into the application in future releases.

Conclusion

The discovery of the CVE-2025-1337 vulnerability in Eastnets PaymentSafe 2.5.26. is alarming, as it can lead to severe security issues for users and organizations using the software. It is advisable that users and organizations who rely on Eastnets PaymentSafe be cautious and implement suggested mitigations until a fix or workaround is provided by the vendor.

Timeline

Published on: 02/16/2025 11:15:08 UTC