CVE-2024-4200
📋 TL;DR
This vulnerability allows a local threat actor to execute arbitrary code on systems running vulnerable versions of Progress Telerik Reporting. The attack exploits insecure deserialization, enabling attackers to run malicious code with the privileges of the Telerik Reporting process. Organizations using Telerik Reporting versions before 2024 Q2 are affected.
💻 Affected Systems
- Progress Telerik Reporting
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the affected server, potentially leading to data theft, ransomware deployment, or lateral movement within the network.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive data, disruption of reporting services, or installation of backdoors for persistent access.
If Mitigated
Limited impact with proper network segmentation and access controls preventing lateral movement, though the initial system may still be compromised.
🎯 Exploit Status
Exploitation requires local access to the system. The vulnerability involves deserialization of untrusted data, which is a well-understood attack vector.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2024 Q2 (18.1.24.2.514) or later
Vendor Advisory: https://docs.telerik.com/reporting/knowledge-base/deserialization-vulnerability-cve-2024-4200
Restart Required: Yes
Instructions:
1. Download Telerik Reporting 2024 Q2 (18.1.24.2.514) or later from the Telerik website. 2. Backup your current installation and configuration. 3. Install the updated version following vendor instructions. 4. Restart all services using Telerik Reporting. 5. Test reporting functionality to ensure compatibility.
🔧 Temporary Workarounds
Restrict Local Access
allLimit local access to Telerik Reporting systems to only authorized administrators
Network Segmentation
allIsolate Telerik Reporting servers in separate network segments with strict firewall rules
🧯 If You Can't Patch
- Implement strict access controls to limit local user access to Telerik Reporting systems
- Deploy application whitelisting to prevent execution of unauthorized binaries on affected systems
🔍 How to Verify
Check if Vulnerable:
Check the Telerik Reporting version in the application's about dialog or configuration files. Versions below 18.1.24.2.514 are vulnerable.Check Version:
Check the Telerik Reporting assembly version or consult the application's configuration files for version information.Verify Fix Applied:
Verify the installed version is 18.1.24.2.514 or higher and test reporting functionality to ensure the patch doesn't break existing features.📡 Detection & Monitoring
Log Indicators:
- Unusual process creation events from Telerik Reporting service
- Errors in Telerik Reporting logs related to deserialization
- Unexpected network connections from Telerik Reporting process
Network Indicators:
- Unusual outbound connections from Telerik Reporting servers
- Traffic patterns indicating data exfiltration
SIEM Query:
Process creation where parent process contains 'Telerik' AND (process name contains 'cmd' OR process name contains 'powershell' OR process name contains 'wmic')