CVE-2023-3086
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in TeamPass allows attackers to inject malicious scripts into the application, which are then executed when other users view the affected content. It affects all TeamPass instances running versions prior to 3.0.9. Users who access compromised TeamPass instances could have their sessions hijacked or sensitive information stolen.
💻 Affected Systems
- TeamPass
📦 What is this software?
Teampass by Teampass
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator credentials, gain full control of the TeamPass instance, and exfiltrate all stored passwords and sensitive data.
Likely Case
Attackers inject malicious scripts to steal user session cookies, leading to account takeover and potential access to stored credentials.
If Mitigated
With proper input validation and output encoding, the impact is limited to failed injection attempts with no successful exploitation.
🎯 Exploit Status
Exploitation requires authenticated access but the vulnerability is easy to exploit once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.0.9
Vendor Advisory: https://github.com/nilsteampassnet/teampass/commit/1c0825b67eb8f8b5ecc418ff7614423a275e6a79
Restart Required: No
Instructions:
1. Backup your TeamPass database and configuration. 2. Download TeamPass 3.0.9 or later from the official repository. 3. Replace the existing installation files with the patched version. 4. Verify the installation is working correctly.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side input validation to sanitize user inputs before processing.
Content Security Policy
allImplement a strict Content Security Policy header to mitigate XSS impact.
Add to web server configuration: Content-Security-Policy: default-src 'self'; script-src 'self'
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with XSS protection rules
- Restrict user permissions to minimize attack surface and limit what authenticated users can modify
🔍 How to Verify
Check if Vulnerable:
Check the TeamPass version in the application settings or by examining the source code files for version markers.Check Version:
Check the version in TeamPass admin interface or examine includes/config.php for version informationVerify Fix Applied:
Verify the installation is running version 3.0.9 or later and test XSS payloads to confirm they are properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests with script tags or JavaScript payloads
- Multiple failed login attempts followed by successful authentication
Network Indicators:
- HTTP requests containing suspicious script tags or encoded JavaScript
- Outbound connections to unknown domains following user interactions
SIEM Query:
source="teampass_logs" AND (http_method="POST" AND (uri="*<script*" OR uri="*javascript:*" OR uri="*onerror=*"))🔗 References
- https://github.com/nilsteampassnet/teampass/commit/1c0825b67eb8f8b5ecc418ff7614423a275e6a79
- https://huntr.dev/bounties/17be9e8a-abe8-41db-987f-1d5b0686ae20
- https://github.com/nilsteampassnet/teampass/commit/1c0825b67eb8f8b5ecc418ff7614423a275e6a79
- https://huntr.dev/bounties/17be9e8a-abe8-41db-987f-1d5b0686ae20
