CVE-2021-32831
📋 TL;DR
CVE-2021-32831 is a code injection vulnerability in the Total.js framework for Node.js. When the utils.set function is called with user-controlled values, attackers can execute arbitrary code on affected systems. This affects all applications using Total.js framework versions before 3.4.9.
💻 Affected Systems
- Total.js framework
📦 What is this software?
Total.js by Totaljs
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, and lateral movement within the network.
Likely Case
Arbitrary code execution allowing attackers to steal sensitive data, modify application behavior, or establish persistence.
If Mitigated
Limited impact if proper input validation and sanitization are implemented, though the core vulnerability remains.
🎯 Exploit Status
Exploitation requires user input to reach utils.set() function. Public proof-of-concept exists in GitHub Security Lab advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.4.9
Vendor Advisory: https://github.com/totaljs/framework/blob/e644167d5378afdc45cb0156190349b2c07ef235/changes.txt#L11
Restart Required: Yes
Instructions:
1. Update package.json to specify 'total.js': '>=3.4.9'. 2. Run 'npm update total.js'. 3. Restart the Node.js application. 4. Test application functionality.
🔧 Temporary Workarounds
Input validation and sanitization
allImplement strict input validation and sanitization for all user inputs before passing to utils.set() function.
WAF rule implementation
allDeploy Web Application Firewall rules to detect and block suspicious patterns in user input that could trigger code injection.
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs
- Deploy application-level firewall or WAF with rules targeting code injection patterns
🔍 How to Verify
Check if Vulnerable:
Check package.json or run 'npm list total.js' to see if version is below 3.4.9. Review code for usage of utils.set() with user input.Check Version:
npm list total.js | grep total.jsVerify Fix Applied:
Confirm 'npm list total.js' shows version 3.4.9 or higher. Test application functionality after update.📡 Detection & Monitoring
Log Indicators:
- Unusual process execution from Node.js application
- Suspicious JavaScript code in application logs
- Errors from utils.set() function with unexpected input
Network Indicators:
- Unusual outbound connections from Node.js application
- Suspicious payloads in HTTP requests to application endpoints
SIEM Query:
source='application.logs' AND (process='node' AND command LIKE '%eval%' OR command LIKE '%exec%') OR (message LIKE '%utils.set%' AND message LIKE '%error%')🔗 References
- https://github.com/totaljs/framework/blob/e644167d5378afdc45cb0156190349b2c07ef235/changes.txt#L11
- https://github.com/totaljs/framework/commit/887b0fa9e162ef7a2dd9cec20a5ca122726373b3
- https://securitylab.github.com/advisories/GHSL-2021-066-totaljs-totaljs/
- https://www.npmjs.com/package/total.js
- https://github.com/totaljs/framework/blob/e644167d5378afdc45cb0156190349b2c07ef235/changes.txt#L11
- https://github.com/totaljs/framework/commit/887b0fa9e162ef7a2dd9cec20a5ca122726373b3
- https://securitylab.github.com/advisories/GHSL-2021-066-totaljs-totaljs/
- https://www.npmjs.com/package/total.js
