CVE-2021-37522
📋 TL;DR
This CVE describes a SQL injection vulnerability in Locke-Bot 2.0.2, a Discord bot, that allows remote attackers to execute arbitrary SQL commands. Attackers can exploit this by sending crafted strings to specific JavaScript files, potentially compromising the bot's database. Anyone running the vulnerable version of Locke-Bot is affected.
💻 Affected Systems
- HKing2802 Locke-Bot
📦 What is this software?
Locke Bot by Locke Bot Project
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, data manipulation, privilege escalation, and potential remote code execution if database functions allow it.
Likely Case
Unauthorized data access and modification, potential exposure of sensitive information stored in the bot's database.
If Mitigated
Limited impact with proper input validation and parameterized queries preventing SQL injection.
🎯 Exploit Status
Public proof-of-concept code exists showing SQL injection payloads. Exploitation requires sending specially crafted messages to the Discord bot.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: No official vendor advisory found
Restart Required: Yes
Instructions:
1. Check for updated version from the developer. 2. If no patch available, manually fix vulnerable code files. 3. Replace vulnerable files with secure versions using parameterized queries. 4. Restart the bot application.
🔧 Temporary Workarounds
Manual Code Fix
allReplace vulnerable SQL queries with parameterized queries in the affected JavaScript files
Replace raw SQL concatenation with prepared statements using database libraries
Input Validation
allImplement strict input validation for all user inputs before processing
Add input sanitization functions before SQL query construction
🧯 If You Can't Patch
- Immediately disable the vulnerable bot until a fix can be applied
- Implement network-level restrictions to limit bot access to only necessary database permissions
🔍 How to Verify
Check if Vulnerable:
Check if running Locke-Bot version 2.0.2 and examine /src/db.js, /commands/mute.js, /modules/event/messageDelete.js for SQL concatenation without parameterization.Check Version:
Check package.json for version or run: node -e "console.log(require('./package.json').version)"Verify Fix Applied:
Verify that all SQL queries in affected files use parameterized queries or prepared statements instead of string concatenation.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Error messages containing SQL syntax errors
- Multiple failed login attempts or unusual database operations
Network Indicators:
- Unusual database connections from bot server
- Suspicious SQL payloads in Discord message logs
SIEM Query:
source="discord_bot_logs" AND (message="SQL" OR message="database error")