CVE-2023-25261
📋 TL;DR
This vulnerability allows remote code execution in Stimulsoft reporting products by exploiting improper input validation. Attackers can craft malicious reports that execute arbitrary code on affected systems, potentially compromising the entire server. It affects Stimulsoft Designer (Desktop and Web) and Stimulsoft Viewer (Web) versions from 2023.1.3 to 2023.1.4.
💻 Affected Systems
- Stimulsoft Designer (Desktop)
- Stimulsoft Designer (Web)
- Stimulsoft Viewer (Web)
📦 What is this software?
Designer by Stimulsoft
Designer by Stimulsoft
Designer by Stimulsoft
Viewer by Stimulsoft
Viewer by Stimulsoft
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to execute arbitrary code, steal sensitive data, install malware, pivot to other systems, and maintain persistent access.
Likely Case
Data exfiltration, system compromise, and potential lateral movement within the network.
If Mitigated
Limited impact with proper network segmentation, application sandboxing, and least privilege principles in place.
🎯 Exploit Status
Exploitation requires only a malicious report file. Public writeups demonstrate exploitation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2023.1.5 or later
Vendor Advisory: http://stimulsoft.com
Restart Required: Yes
Instructions:
1. Download latest version from Stimulsoft website. 2. Backup existing installation. 3. Install update. 4. Restart application/services. 5. Validate fix.
🔧 Temporary Workarounds
Network Segmentation
allIsolate affected systems from internet and restrict internal network access.
File Upload Restrictions
allBlock upload of .mrt report files or implement strict file validation.
🧯 If You Can't Patch
- Implement strict network access controls and isolate affected systems
- Disable report file upload/import functionality and use only trusted reports
🔍 How to Verify
Check if Vulnerable:
Check Stimulsoft product version in application settings or about dialog. Versions 2023.1.3-2023.1.4 are vulnerable.Check Version:
Check application version in GUI or configuration files. No universal CLI command available.Verify Fix Applied:
Verify version is 2023.1.5 or later. Test with known safe report files to ensure functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual report file processing
- Unexpected process execution
- File system access from Stimulsoft processes
Network Indicators:
- Outbound connections from Stimulsoft to unexpected destinations
- Large data exfiltration
SIEM Query:
source="stimulsoft" AND (process_execution OR file_access OR network_connection)