Overview
CVE-2025-63735 describes a reflected Cross-Site Scripting (XSS) vulnerability found in Ruckus Unleashed version 200.13.6.1.319. This vulnerability allows an attacker to inject arbitrary JavaScript code into a user’s browser by crafting a malicious URL targeting the `selfguestpass/guestAccessSubmit.jsp` endpoint. Specifically, the `name` parameter is vulnerable.
Technical Details
The vulnerability exists because the Ruckus Unleashed software fails to properly sanitize user-supplied input provided via the `name` parameter in the `selfguestpass/guestAccessSubmit.jsp` endpoint. An attacker can exploit this by crafting a URL containing malicious JavaScript code within the `name` parameter. When a user clicks on this manipulated URL, the injected JavaScript code is executed in their browser, within the security context of the Ruckus Unleashed web application.
Example of a potentially malicious URL:
http://ruckus-unleashed-ip/selfguestpass/guestAccessSubmit.jsp?name=<script>alert('XSS Vulnerability')</script>This crafted URL, when visited by a user already authenticated to the Ruckus Unleashed system, will execute the JavaScript code within the `name` parameter.
CVSS Analysis
While the provided information indicates the CVSS score and severity are “N/A,” reflected XSS vulnerabilities generally receive a medium severity rating because they require user interaction to be exploited. Without an official CVSS score, we can approximate. Assuming standard exploitability metrics (network attack vector, user interaction required) and impact metrics (integrity and confidentiality), a likely CVSS v3.0 score would be in the range of 6.1 (Medium).
Important Note: The absence of an official CVSS score does not diminish the risk. It’s crucial to address XSS vulnerabilities regardless.
Possible Impact
The impact of a successful reflected XSS attack can include:
- Session Hijacking: An attacker could steal a user’s session cookie, gaining unauthorized access to the Ruckus Unleashed system.
- Defacement: The attacker could modify the appearance of the web page displayed to the user.
- Redirection: The user could be redirected to a malicious website.
- Credential Theft: The attacker could potentially phish for user credentials by injecting a fake login form.
Because Ruckus Unleashed controls network access, a successful attack could compromise network security and potentially impact connected devices.
Mitigation or Patch Steps
The most effective mitigation is to upgrade to a patched version of Ruckus Unleashed that addresses this vulnerability. Contact Ruckus Networks support for information on available patches and upgrade procedures.
In the interim, consider the following temporary mitigations:
- Input Validation: Implement strict input validation and sanitization on all user-supplied input, especially the `name` parameter in the `selfguestpass/guestAccessSubmit.jsp` endpoint.
- Output Encoding: Encode all output to prevent the browser from interpreting user-supplied input as executable code.
- Web Application Firewall (WAF): Deploy a WAF to detect and block malicious requests.
- User Awareness: Educate users about the risks of clicking on suspicious links and entering sensitive information on unfamiliar websites.
