CVE-2023-27849
📋 TL;DR
CVE-2023-27849 is a critical remote code execution vulnerability in rails-routes-to-json v1.0.0 that allows attackers to execute arbitrary commands on affected systems via the child_process function. This affects any application using this vulnerable npm package version. Attackers can potentially gain full control of the server.
💻 Affected Systems
- rails-routes-to-json
📦 What is this software?
Rails Routes To Json by Rails Routes To Json Project
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise allowing attackers to execute arbitrary commands, steal data, install malware, pivot to other systems, and maintain persistent access.
Likely Case
Attackers exploit the vulnerability to execute commands, potentially leading to data theft, service disruption, or cryptocurrency mining.
If Mitigated
With proper network segmentation and least privilege, impact is limited to the affected application container or service.
🎯 Exploit Status
The vulnerability is straightforward to exploit with publicly available details. No authentication is required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v1.0.1
Vendor Advisory: https://www.npmjs.com/package/rails-routes-to-json
Restart Required: Yes
Instructions:
1. Update package.json to specify 'rails-routes-to-json': '^1.0.1'. 2. Run 'npm update rails-routes-to-json'. 3. Restart your application server. 4. Verify the update with 'npm list rails-routes-to-json'.
🔧 Temporary Workarounds
Remove vulnerable package
allUninstall the vulnerable package if not essential
npm uninstall rails-routes-to-json
Network isolation
allRestrict network access to affected applications
🧯 If You Can't Patch
- Isolate the affected system from network access
- Implement strict input validation and sanitization for all user inputs
🔍 How to Verify
Check if Vulnerable:
Check package.json or run 'npm list rails-routes-to-json' to see if version 1.0.0 is installedCheck Version:
npm list rails-routes-to-jsonVerify Fix Applied:
Run 'npm list rails-routes-to-json' and verify version is 1.0.1 or higher📡 Detection & Monitoring
Log Indicators:
- Unusual child_process spawns
- Suspicious command execution patterns
- Unexpected system calls from Node.js process
Network Indicators:
- Unexpected outbound connections from application server
- Command and control traffic patterns
SIEM Query:
process.name:node AND process.args:*child_process* AND process.args:*exec*🔗 References
- https://github.com/omnitaint/Vulnerability-Reports/blob/2211ea4712f24d20b7f223fb737910fdfb041edb/reports/rails-routes-to-json/report.md
- https://www.npmjs.com/package/rails-routes-to-json
- https://github.com/omnitaint/Vulnerability-Reports/blob/2211ea4712f24d20b7f223fb737910fdfb041edb/reports/rails-routes-to-json/report.md
- https://www.npmjs.com/package/rails-routes-to-json
