CVE-2025-61583
📋 TL;DR
A reflected cross-site scripting (XSS) vulnerability in TS3 Manager versions 2.2.1 and earlier allows attackers to inject malicious scripts via server hostnames in the login page error handling. When exploited, these scripts execute in victims' browsers, potentially stealing session cookies or performing unauthorized actions. This affects all users of vulnerable TS3 Manager installations.
💻 Affected Systems
- TS3 Manager
📦 What is this software?
Ts3 Manager by Joni1802
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full control of the TS3 Manager interface, and potentially compromise the underlying Teamspeak3 server.
Likely Case
Attackers steal user session cookies to impersonate legitimate users, modify server settings, or redirect users to malicious sites.
If Mitigated
Script execution is blocked by modern browser XSS protections or Content Security Policy headers, limiting impact to minor UI manipulation.
🎯 Exploit Status
Exploitation requires tricking users into clicking malicious links with crafted hostname parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.2.2
Vendor Advisory: https://github.com/joni1802/ts3-manager/security/advisories/GHSA-qw6j-37r6-m93g
Restart Required: Yes
Instructions:
1. Backup current TS3 Manager installation. 2. Download version 2.2.2 from GitHub. 3. Replace existing files with new version. 4. Restart the web service or application server.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to block inline script execution and restrict script sources.
Add to web server config: Content-Security-Policy: default-src 'self'; script-src 'self'
Input Validation Filter
allAdd server-side filtering to reject hostnames containing script tags or JavaScript.
Implement regex filter in login handler: /[<>"']/
🧯 If You Can't Patch
- Restrict access to TS3 Manager interface using network ACLs or firewall rules to trusted IPs only.
- Deploy a web application firewall (WAF) with XSS protection rules enabled.
🔍 How to Verify
Check if Vulnerable:
Test by accessing login page with parameter: ?hostname=<script>alert('test')</script> and check if script executes.Check Version:
Check package.json or version file in TS3 Manager installation directory.Verify Fix Applied:
Repeat vulnerable test after patching; script should not execute and input should be sanitized.📡 Detection & Monitoring
Log Indicators:
- HTTP requests containing <script> tags in hostname parameter
- Unusual error responses from login page
Network Indicators:
- HTTP requests with encoded script payloads in query parameters
SIEM Query:
web.url:*hostname=*<script>* OR web.url:*hostname=*javascript:*