CVE-2022-29215
📋 TL;DR
CVE-2022-29215 is a YAML injection vulnerability in the RegionProtect Minecraft plugin that allows malicious inputs to cause instant server crashes. This affects Minecraft servers running RegionProtect versions prior to 1.1.0. The vulnerability can be exploited by users with operator permissions or through crafted inputs.
💻 Affected Systems
- RegionProtect Minecraft plugin
📦 What is this software?
Regionprotect by Regionprotect Project
⚠️ Risk & Real-World Impact
Worst Case
Complete server crash leading to denial of service, potentially disrupting gameplay and server operations
Likely Case
Server instability and crashes when malicious YAML inputs are processed
If Mitigated
Minimal impact with proper permission controls and input validation
🎯 Exploit Status
Exploitation requires operator permissions or ability to pass malicious arguments to vulnerable functions
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.0
Vendor Advisory: https://github.com/kaidomc-pm-pl/RegionProtect/security/advisories/GHSA-7gr2-w2r3-r9vf
Restart Required: Yes
Instructions:
1. Download RegionProtect version 1.1.0 or later from official sources. 2. Stop Minecraft server. 3. Replace old RegionProtect plugin file with new version. 4. Restart Minecraft server.
🔧 Temporary Workarounds
Restrict operator permissions
allLimit operator permissions to trusted users only to prevent exploitation
Edit server.properties: op-permission-level=2 (or appropriate level)
Edit ops.json to remove untrusted users
Input validation
allImplement server-side input validation for RegionProtect commands
Configure server to validate YAML inputs before processing
🧯 If You Can't Patch
- Restrict operator permissions to trusted administrators only
- Monitor server logs for unusual YAML parsing errors or server crashes
🔍 How to Verify
Check if Vulnerable:
Check RegionProtect plugin version in server plugins folder or via /plugins command in-gameCheck Version:
In-game: /plugins | grep RegionProtect or check plugins/RegionProtect.jar file propertiesVerify Fix Applied:
Confirm RegionProtect version is 1.1.0 or higher and test with known malicious inputs📡 Detection & Monitoring
Log Indicators:
- Unexpected server crashes
- YAML parsing errors in server logs
- RegionProtect plugin error messages
Network Indicators:
- Sudden server disconnections
- Increased failed connection attempts
SIEM Query:
source="minecraft.log" AND ("RegionProtect" AND ("error" OR "crash" OR "YAML"))🔗 References
- https://github.com/kaidomc-pm-pl/RegionProtect/commit/0060d421358ab59acb6a168eab0d11c43d2d105d
- https://github.com/kaidomc-pm-pl/RegionProtect/security/advisories/GHSA-7gr2-w2r3-r9vf
- https://github.com/kaidomc-pm-pl/RegionProtect/commit/0060d421358ab59acb6a168eab0d11c43d2d105d
- https://github.com/kaidomc-pm-pl/RegionProtect/security/advisories/GHSA-7gr2-w2r3-r9vf
