CVE-2024-56841
📋 TL;DR
Mendix LDAP module versions before 1.1.2 are vulnerable to LDAP injection attacks. This allows unauthenticated remote attackers to bypass username verification by manipulating LDAP queries. Organizations using Mendix applications with the vulnerable LDAP module are affected.
💻 Affected Systems
- Mendix LDAP module
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete authentication bypass allowing unauthorized access to Mendix applications, potentially leading to data theft, privilege escalation, or further system compromise.
Likely Case
Unauthenticated attackers bypassing login screens to access restricted application functionality or user data.
If Mitigated
Limited impact with proper network segmentation, strong authentication layers, and monitoring in place.
🎯 Exploit Status
Exploitation requires understanding of LDAP injection techniques and Mendix application structure. No public exploit code is currently available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: V1.1.2
Vendor Advisory: https://cert-portal.siemens.com/productcert/html/ssa-314390.html
Restart Required: No
Instructions:
1. Update Mendix LDAP module to version 1.1.2 or later via Mendix Marketplace. 2. Redeploy affected Mendix applications. 3. Test authentication functionality.
🔧 Temporary Workarounds
Disable LDAP authentication
allTemporarily switch to alternative authentication methods until patching is complete
Implement input validation
allAdd custom validation to sanitize username inputs before LDAP queries
🧯 If You Can't Patch
- Implement network-level controls to restrict access to Mendix applications
- Enable detailed logging and monitoring for authentication attempts
🔍 How to Verify
Check if Vulnerable:
Check Mendix LDAP module version in Mendix Studio Pro or application configuration. Versions below 1.1.2 are vulnerable.Check Version:
Check module version in Mendix Studio Pro under Project > Marketplace modulesVerify Fix Applied:
Confirm LDAP module version is 1.1.2 or higher and test authentication with various input patterns.📡 Detection & Monitoring
Log Indicators:
- Unusual LDAP query patterns
- Failed authentication attempts with special characters
- Successful logins from unexpected sources
Network Indicators:
- LDAP queries containing special characters like *, (, ), &, |, =, >, <
SIEM Query:
source="mendix" AND (event="authentication" OR event="ldap") AND (message="*" OR message="(" OR message=")")