CVE-2023-3627
📋 TL;DR
This CVE describes a Cross-Site Request Forgery (CSRF) vulnerability in SuiteCRM Core that allows attackers to trick authenticated users into performing unintended actions. Attackers can exploit this to modify data, change settings, or perform actions on behalf of users. All organizations running vulnerable versions of SuiteCRM Core are affected.
💻 Affected Systems
- SuiteCRM Core
📦 What is this software?
Suitecrm by Salesagility
⚠️ Risk & Real-World Impact
Worst Case
Attackers could gain administrative privileges, modify critical business data, or compromise the entire CRM system through chained attacks.
Likely Case
Attackers could modify user accounts, change configurations, or manipulate business data through forged requests.
If Mitigated
With proper CSRF protections and user awareness, impact is limited to unsuccessful attack attempts.
🎯 Exploit Status
CSRF attacks are well-understood and easy to weaponize; exploitation requires user interaction but no technical complexity.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 8.3.1
Vendor Advisory: https://github.com/salesagility/suitecrm-core/commit/78285702d76317f081b1fbc59cb2754e93b9a4c3
Restart Required: No
Instructions:
1. Backup your SuiteCRM instance. 2. Update to version 8.3.1 or later via the SuiteCRM update mechanism. 3. Verify the update completed successfully.
🔧 Temporary Workarounds
Implement CSRF Tokens
allManually add CSRF tokens to forms and validate them server-side.
SameSite Cookie Attribute
allConfigure session cookies with SameSite=Strict attribute to prevent CSRF.
Set-Cookie: session=value; SameSite=Strict; Secure; HttpOnly
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to detect and block CSRF patterns
- Educate users about not clicking suspicious links and logging out when not using SuiteCRM
🔍 How to Verify
Check if Vulnerable:
Check SuiteCRM version in admin panel or via 'php -v' if CLI access available.Check Version:
Check Admin > System Settings > System Information in SuiteCRM web interfaceVerify Fix Applied:
Verify version is 8.3.1 or later and test CSRF protection by attempting to submit forms without valid tokens.📡 Detection & Monitoring
Log Indicators:
- Multiple failed form submissions from same IP
- Unusual POST requests without referrer headers
Network Indicators:
- Requests with missing or invalid CSRF tokens
- POST requests originating from unexpected domains
SIEM Query:
source="suitecrm.log" AND ("POST" AND NOT "csrf_token")🔗 References
- https://github.com/salesagility/suitecrm-core/commit/78285702d76317f081b1fbc59cb2754e93b9a4c3
- https://huntr.dev/bounties/558b3dce-db03-47ba-b60b-c6eb578e04f1
- https://github.com/salesagility/suitecrm-core/commit/78285702d76317f081b1fbc59cb2754e93b9a4c3
- https://huntr.dev/bounties/558b3dce-db03-47ba-b60b-c6eb578e04f1
