CVE-2023-47295
📋 TL;DR
CVE-2023-47295 is a CSV injection vulnerability in NCR Terminal Handler v1.5.1 that allows attackers to execute arbitrary commands by injecting malicious payloads into text fields. This affects organizations using NCR Terminal Handler v1.5.1 for point-of-sale or terminal management systems. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- NCR Terminal Handler
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with remote code execution, data theft, lateral movement, and persistent backdoor installation.
Likely Case
Local privilege escalation leading to unauthorized access to sensitive data and system manipulation.
If Mitigated
Limited impact with proper input validation and security controls preventing payload execution.
🎯 Exploit Status
Exploitation requires user interaction or access to input fields, but the technical complexity is low once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch is available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation to reject or sanitize CSV formula characters like =, +, -, @.
Not applicable - requires code changes
Application Firewall Rules
allDeploy WAF rules to block requests containing CSV injection patterns.
Not applicable - configure in WAF
🧯 If You Can't Patch
- Restrict access to the application using network segmentation and firewall rules.
- Implement least privilege access controls and monitor for unusual activity in text input fields.
🔍 How to Verify
Check if Vulnerable:
Test by attempting to input CSV formula payloads (e.g., =cmd|' /C calc'!A0) into text fields and check if commands execute.Check Version:
Check application version in the interface or configuration files; for NCR Terminal Handler v1.5.1, it should display version 1.5.1.Verify Fix Applied:
Verify that input validation prevents execution of CSV formula payloads and no commands are triggered.📡 Detection & Monitoring
Log Indicators:
- Unusual input patterns in logs, such as CSV formula characters (=, +, @) in text fields
- Unexpected process executions or command outputs
Network Indicators:
- Suspicious outbound connections from the application server
- Anomalous data exports or file transfers
SIEM Query:
source="application_logs" AND (message="=cmd*" OR message="+cmd*" OR message="@cmd*")