CVE-2024-36415

9.1 CRITICAL

📋 TL;DR

This vulnerability in SuiteCRM allows attackers to upload malicious files that bypass verification checks, leading to remote code execution. All SuiteCRM instances prior to versions 7.14.4 and 8.6.1 are affected. Attackers can potentially take full control of affected systems.

💻 Affected Systems

Products:
  • SuiteCRM
Versions: All versions prior to 7.14.4 and 8.6.1
Operating Systems: All platforms running SuiteCRM
Default Config Vulnerable: ⚠️ Yes
Notes: Any SuiteCRM installation with file upload functionality enabled is vulnerable. The vulnerability is in the core product and affects all deployments.

📦 What is this software?

⚠️ Risk & Real-World Impact

🔴

Worst Case

Complete system compromise allowing attackers to execute arbitrary code, steal sensitive CRM data, pivot to other systems, and maintain persistent access.

🟠

Likely Case

Attackers upload web shells or malicious scripts to gain unauthorized access, exfiltrate customer data, and potentially disrupt CRM operations.

🟢

If Mitigated

With proper file upload restrictions and web application firewalls, exploitation attempts are blocked or detected before successful compromise.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: LIKELY
Unauthenticated Exploit: ✅ No
Complexity: LOW

Exploitation requires authenticated access but the technical complexity is low once access is obtained. The CWE-98 (PHP Remote File Inclusion) pattern is well understood by attackers.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 7.14.4 or 8.6.1

Vendor Advisory: https://github.com/salesagility/SuiteCRM/security/advisories/GHSA-c82f-58jv-jfrh

Restart Required: No

Instructions:

1. Backup your SuiteCRM installation and database. 2. Download the patched version (7.14.4 or 8.6.1) from the official SuiteCRM repository. 3. Follow the SuiteCRM upgrade documentation for your version. 4. Verify the upgrade completed successfully.

🔧 Temporary Workarounds

Restrict File Upload Types

all

Configure web server or application to block uploads of executable file types

# Configure .htaccess for Apache:
<FilesMatch "\.(php|phtml|php3|php4|php5|phps|pl|py|jsp|asp|sh|cgi)$">
  Order Allow,Deny
  Deny from all
</FilesMatch>
# Configure nginx:
location ~ \.(php|phtml|php3|php4|php5|phps|pl|py|jsp|asp|sh|cgi)$ {
  deny all;
}

Implement WAF Rules

all

Add web application firewall rules to detect and block file upload exploitation attempts

🧯 If You Can't Patch

  • Disable file upload functionality in SuiteCRM if not required for business operations
  • Implement strict network segmentation to isolate SuiteCRM from critical systems

🔍 How to Verify

Check if Vulnerable:

Check your SuiteCRM version in the admin panel or by examining the version.php file in the installation directory

Check Version:

grep -E "suitecrm_version|sugar_version" /path/to/suitecrm/version.php

Verify Fix Applied:

Verify the version shows 7.14.4 or higher for 7.x branch, or 8.6.1 or higher for 8.x branch

📡 Detection & Monitoring

Log Indicators:

  • Unusual file uploads to SuiteCRM upload directories
  • Multiple failed upload attempts followed by successful upload
  • Execution of PHP files from upload directories

Network Indicators:

  • HTTP POST requests to file upload endpoints with unusual file extensions
  • Outbound connections from SuiteCRM server to unknown external IPs

SIEM Query:

source="suitecrm.log" AND ("upload" OR "file_upload") AND ("php" OR "phtml" OR "php3" OR "php4" OR "php5" OR "phps")

🔗 References

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