CVE-2025-7885
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into the WebSSH login page via manipulated hostname or port parameters. It affects Huashengdun WebSSH versions up to 1.6.2, enabling cross-site scripting attacks that can steal credentials or hijack sessions. The vulnerability is remotely exploitable and affects all users of vulnerable versions.
💻 Affected Systems
- Huashengdun WebSSH
📦 What is this software?
Webssh by Huashengdun
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator credentials, gain full system access, pivot to internal networks, and deploy ransomware or data exfiltration tools.
Likely Case
Session hijacking leading to unauthorized SSH access to managed systems, credential theft from legitimate users, and potential lateral movement.
If Mitigated
Limited to session disruption or minor data leakage if proper input validation and output encoding are implemented.
🎯 Exploit Status
Exploit details are publicly available in GitHub repositories. The vulnerability requires minimal technical skill to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None available - vendor did not respond to disclosure
Restart Required: Yes
Instructions:
1. Monitor the official GitHub repository for patches. 2. Consider alternative WebSSH solutions if no patch is forthcoming. 3. Implement workarounds immediately.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to sanitize hostname and port parameters before processing
# Example for nginx: location /webssh { proxy_set_header X-Forwarded-Host $host; proxy_set_header X-Forwarded-Port $server_port; }
WAF Rule Implementation
allDeploy web application firewall rules to block XSS payloads in hostname and port parameters
# ModSecurity rule: SecRule ARGS:hostname "@rx <script" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Isolate WebSSH instances behind authentication gateways or VPNs
- Implement Content Security Policy headers to restrict script execution
🔍 How to Verify
Check if Vulnerable:
Test by injecting basic XSS payloads into hostname/port fields: <script>alert('test')</script>Check Version:
Check package.json or application metadata for version numberVerify Fix Applied:
Verify that script tags in hostname/port parameters are properly sanitized or rejected📡 Detection & Monitoring
Log Indicators:
- Unusual length hostname/port parameters
- Requests containing script tags or JavaScript in URL parameters
- Multiple failed login attempts from same IP with varying parameters
Network Indicators:
- HTTP requests with encoded script tags in parameters
- Unusual traffic patterns to /login endpoints
SIEM Query:
source="webssh.log" AND (hostname="*<script*" OR port="*javascript:*")🔗 References
- https://github.com/4m3rr0r/PoCVulDb/blob/main/CVE-2025-7885.md
- https://github.com/huashengdun/webssh/issues/410
- https://vuldb.com/?ctiid.317000
- https://vuldb.com/?id.317000
- https://vuldb.com/?submit.613610
- https://github.com/4m3rr0r/PoCVulDb/blob/main/CVE-2025-7885.md
- https://github.com/huashengdun/webssh/issues/410
