CVE-2021-23275
📋 TL;DR
This vulnerability allows a low-privileged attacker with local Windows access to insert malicious files into TIBCO software installations, which then execute with elevated privileges due to improper file/folder access restrictions. It affects multiple TIBCO Spotfire and Enterprise Runtime for R products on Windows systems. The CVSS 8.8 score indicates high severity.
💻 Affected Systems
- TIBCO Enterprise Runtime for R - Server Edition
- TIBCO Spotfire Analytics Platform for AWS Marketplace
- TIBCO Spotfire Server
- TIBCO Spotfire Statistics Services
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise via privilege escalation to SYSTEM/administrator level, enabling malware persistence, data theft, lateral movement, and complete control of affected systems.
Likely Case
Local privilege escalation allowing attackers to bypass security controls, install backdoors, access sensitive data, and potentially pivot to other systems.
If Mitigated
Limited impact with proper access controls, monitoring, and network segmentation preventing lateral movement and limiting damage to isolated systems.
🎯 Exploit Status
Exploitation requires local access and low privileges. The vulnerability is in file/folder permissions, making exploitation straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check TIBCO advisories for specific product updates - multiple fixed versions across different products
Vendor Advisory: https://www.tibco.com/support/advisories/2021/06/tibco-security-advisory-june-29-2021-tibco-spotfire-2021-23275
Restart Required: Yes
Instructions:
1. Review TIBCO advisory for specific product patch versions. 2. Apply appropriate updates for affected TIBCO products. 3. Restart services/systems as required. 4. Verify proper installation and functionality.
🔧 Temporary Workarounds
Restrict File Permissions
windowsManually adjust file and folder permissions in TIBCO installation directories to prevent unauthorized write access
icacls "C:\Program Files\TIBCO\*" /deny "Users:(OI)(CI)W"
icacls "C:\Program Files (x86)\TIBCO\*" /deny "Users:(OI)(CI)W"
Application Whitelisting
windowsImplement application control policies to prevent execution of unauthorized binaries from TIBCO directories
🧯 If You Can't Patch
- Implement strict access controls to limit local access to affected systems
- Deploy endpoint detection and response (EDR) solutions to monitor for privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check installed TIBCO product versions against affected version lists in the advisory. Review file permissions in installation directories for excessive write access.Check Version:
Check product-specific documentation or installation directories for version informationVerify Fix Applied:
Verify installed version is patched per TIBCO advisory. Confirm file permissions in installation directories are properly restricted.📡 Detection & Monitoring
Log Indicators:
- Unauthorized file writes to TIBCO installation directories
- Process execution from TIBCO directories with unexpected parent processes
- Privilege escalation events
Network Indicators:
- Unusual outbound connections from TIBCO services
- Lateral movement attempts from affected systems
SIEM Query:
EventID=4688 AND (ProcessName contains 'TIBCO' OR NewProcessName contains 'TIBCO') AND SubjectUserName != SYSTEM🔗 References
- http://www.tibco.com/services/support/advisories
- https://www.tibco.com/support/advisories/2021/06/tibco-security-advisory-june-29-2021-tibco-spotfire-2021-23275
- http://www.tibco.com/services/support/advisories
- https://www.tibco.com/support/advisories/2021/06/tibco-security-advisory-june-29-2021-tibco-spotfire-2021-23275
