CVE-2022-2027
📋 TL;DR
This vulnerability allows CSV formula injection attacks in the titra time tracking software. Attackers can craft malicious CSV files that execute formulas when opened in spreadsheet applications like Excel, potentially leading to remote code execution. Users of titra versions prior to 0.77.0 who import CSV files are affected.
💻 Affected Systems
- titra time tracking software
📦 What is this software?
Titra by Kromit
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution on the user's system when malicious CSV is opened in vulnerable spreadsheet applications, potentially leading to full system compromise.
Likely Case
Data exfiltration, system information disclosure, or local file access through formula execution in spreadsheet applications.
If Mitigated
Limited impact with proper input validation and CSV sanitization in place.
🎯 Exploit Status
Exploitation requires user interaction to open malicious CSV file. Proof of concept available in public bounty reports.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.77.0 and later
Vendor Advisory: https://github.com/kromitgmbh/titra/commit/e606b674a2b7564407d89e38a341d72e22b14694
Restart Required: Yes
Instructions:
1. Update titra to version 0.77.0 or later. 2. Restart the titra application. 3. Verify CSV export functionality properly sanitizes formula elements.
🔧 Temporary Workarounds
Disable CSV import/export
allTemporarily disable CSV file import/export functionality in titra configuration.
# Check titra configuration for CSV settings
# Disable CSV-related features in config files
Use alternative export formats
allUse JSON or other non-CSV export formats until patched.
# Configure titra to use JSON export instead of CSV
🧯 If You Can't Patch
- Implement strict input validation for CSV data, sanitizing formula characters (=, +, -, @)
- Educate users to never open CSV files from untrusted sources in spreadsheet applications
🔍 How to Verify
Check if Vulnerable:
Check titra version: if version < 0.77.0, system is vulnerable. Test CSV export for formula injection by exporting data containing =cmd|' /C calc'!A0Check Version:
titra --version or check package manager for installed versionVerify Fix Applied:
After updating to 0.77.0+, verify CSV exports properly escape formula characters. Test with malicious payloads that should be sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual CSV export requests
- Large CSV file generation
- Errors in CSV parsing logs
Network Indicators:
- CSV file downloads from titra instances
- Unusual file transfer patterns
SIEM Query:
source="titra" AND (event="csv_export" OR file_type="csv") | stats count by user, src_ip