Listen to this Post
How the CVE Works
The vulnerability arises when a malicious user with `kuiperUser` privileges injects a crafted XSS payload into the `confKey` parameter of a connection configuration. The payload is stored in the database and executed when an admin or another privileged user attempts to delete the key. The attack exploits insufficient input sanitization, allowing JavaScript execution in the victim’s browser context. This can lead to session hijacking, data theft, or further exploitation.
DailyCVE Form
Platform: Kuiper
Version:
Vulnerability: Stored XSS
Severity: Critical
Date: 2023-XX-XX
What Undercode Say:
Exploitation:
1. Payload Injection:
POST /config/add_key HTTP/1.1 Host: target.com confKey=<script>alert(1)</script>&address=malicious
2. Triggering XSS:
- Admin visits `/config/delete?key=
`
– Payload executes in admin’s session.
Protection:
1. Input Sanitization:
function sanitize(input) {
return input.replace(/<script.?>.?<\/script>/gi, '');
}
2. CSP Header:
Content-Security-Policy: default-src 'self'; script-src 'unsafe-inline'
3. Patch Verification:
grep -r "confKey" /var/www/kuiper/
4. WAF Rule:
location /config {
modsecurity_rules 'SecRule ARGS "@rx <script>" "id:1001,deny,status:403"';
}
5. Database Audit:
SELECT FROM config_keys WHERE confKey LIKE '%<%';
6. Exploit Check:
import requests
payload = "<img src=x onerror=alert(1)>"
response = requests.post(url, data={"confKey": payload})
assert "<script>" not in response.text
7. Log Monitoring:
tail -f /var/log/kuiper/access.log | grep -i "confKey="
8. Mitigation Script:
Remove malicious keys curl -X DELETE http://localhost/config/delete?key=$(sanitize $MALICIOUS_KEY)
9. Browser Protection:
<meta http-equiv="Content-Security-Policy" content="script-src 'self'">
10. Vendor Patch:
Update to Kuiper vX.Y.Z+
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
