CVE-2021-45897
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code on SuiteCRM installations. It affects SuiteCRM versions before 7.12.3 and 8.x before 8.0.2. Attackers can exploit this without authentication to gain full control of affected systems.
💻 Affected Systems
- SuiteCRM
📦 What is this software?
Suitecrm by Salesagility
Suitecrm by Salesagility
Suitecrm by Salesagility
Suitecrm by Salesagility
Suitecrm by Salesagility
Suitecrm by Salesagility
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining root/admin access, data theft, ransomware deployment, and persistent backdoor installation.
Likely Case
Web server compromise leading to data exfiltration, credential harvesting, and lateral movement within the network.
If Mitigated
Limited impact with proper network segmentation, WAF rules, and intrusion detection systems blocking exploitation attempts.
🎯 Exploit Status
Public exploit code available on GitHub. Exploitation requires minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.12.3 or 8.0.2
Vendor Advisory: https://docs.suitecrm.com/admin/releases/7.12.x/ and https://docs.suitecrm.com/8.x/admin/releases/8.0/
Restart Required: No
Instructions:
1. Backup your SuiteCRM installation and database. 2. Download the patched version from SuiteCRM's official repository. 3. Follow the upgrade instructions for your specific version. 4. Verify the upgrade completed successfully.
🔧 Temporary Workarounds
Web Application Firewall Rules
allImplement WAF rules to block exploitation attempts targeting the vulnerable endpoint.
Network Segmentation
allRestrict network access to SuiteCRM instances to only trusted IP addresses.
🧯 If You Can't Patch
- Immediately isolate affected systems from the internet and critical internal networks.
- Implement strict network access controls and monitor for exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check SuiteCRM version in admin panel or by examining the application files. Versions below 7.12.3 or 8.0.2 are vulnerable.Check Version:
Check the version.php file in the SuiteCRM installation directory or look in the admin panel under 'About SuiteCRM'.Verify Fix Applied:
Verify the version number shows 7.12.3 or higher, or 8.0.2 or higher in the admin interface.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to vulnerable endpoints
- Unexpected file uploads or modifications
- Suspicious PHP execution patterns
Network Indicators:
- HTTP requests containing exploit payloads to SuiteCRM endpoints
- Outbound connections from SuiteCRM server to unknown external IPs
SIEM Query:
source="suitecrm.logs" AND (http_method="POST" AND uri_path="/index.php?module=...")