Overview
A significant security vulnerability, identified as CVE-2025-34259, has been discovered in Advantech WISE-DeviceOn Server versions prior to 5.4. This vulnerability is a stored cross-site scripting (XSS) flaw located within the /rmm/v1/devicemap/building endpoint. This allows attackers to inject malicious scripts into the application, potentially compromising user sessions and enabling unauthorized actions.
Technical Details
The vulnerability exists because the name parameter, used when creating a map entry via the /rmm/v1/devicemap/building endpoint, is not properly sanitized before being stored and rendered in the map list UI. An authenticated user with malicious intent can inject arbitrary HTML and JavaScript code into the name field. When other users view or interact with the affected map entry, the injected script will be executed within their browser context.
Example Request (Illustrative):
POST /rmm/v1/devicemap/building HTTP/1.1
Host: deviceon.example.com
Content-Type: application/json
Authorization: Bearer [AUTHENTICATION_TOKEN]
{
"name": "<script>alert('XSS Vulnerability!');</script>",
"latitude": 34.0522,
"longitude": -118.2437
}
CVSS Analysis
Due to the nature of this vulnerability (requires authentication and likely user interaction) and without assigned CVSS Score, we can assume the severity is medium. A successful exploit could allow attackers to steal cookies, redirect users to malicious websites, or perform actions on behalf of the victim user.
Possible Impact
The exploitation of this stored XSS vulnerability can have several serious consequences:
- Session Hijacking: Attackers can steal user session cookies, gaining unauthorized access to the application with the victim’s privileges.
- Account Takeover: By executing malicious JavaScript, attackers might be able to change user passwords or perform other administrative actions.
- Malware Distribution: Injected scripts can redirect users to malicious websites or trigger the download of malware.
- Defacement: Attackers could modify the appearance or functionality of the application for other users.
Mitigation and Patch Steps
Advantech has released a patch to address this vulnerability. It is strongly recommended that all users of Advantech WISE-DeviceOn Server versions prior to 5.4 upgrade to version 5.4 or later as soon as possible.
In addition to patching, consider the following general security best practices:
- Input Validation: Implement robust input validation and sanitization on all user-supplied data to prevent the injection of malicious code.
- Output Encoding: Encode all data before displaying it to users to prevent the execution of injected scripts.
- Principle of Least Privilege: Grant users only the minimum necessary permissions to perform their tasks.
- Regular Security Audits: Conduct regular security audits and penetration testing to identify and address vulnerabilities.
