CVE-2023-6293
📋 TL;DR
This CVE describes a prototype pollution vulnerability in the sequelize-typescript library versions prior to 2.1.6. Attackers can inject malicious properties into JavaScript objects, potentially leading to remote code execution or privilege escalation. Applications using vulnerable versions of this TypeScript ORM library are affected.
💻 Affected Systems
- sequelize-typescript
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data exfiltration, or lateral movement within the network.
Likely Case
Denial of service, data manipulation, or privilege escalation within the application context.
If Mitigated
Limited impact due to input validation, sandboxing, or other security controls preventing successful exploitation.
🎯 Exploit Status
Exploitation requires attacker to control input that gets processed by vulnerable library functions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.6
Vendor Advisory: https://github.com/robinbuschmann/sequelize-typescript/commit/5ce8afdd1671b08c774ce106b000605ba8fccf78
Restart Required: Yes
Instructions:
1. Update package.json to specify sequelize-typescript version 2.1.6 or higher. 2. Run npm update sequelize-typescript or yarn upgrade sequelize-typescript. 3. Restart your application server.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for all user-controlled data before passing to sequelize-typescript functions.
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs
- Deploy web application firewall (WAF) rules to detect and block prototype pollution attempts
🔍 How to Verify
Check if Vulnerable:
Check package.json or package-lock.json for sequelize-typescript version. If version is less than 2.1.6, you are vulnerable.Check Version:
npm list sequelize-typescriptVerify Fix Applied:
After updating, verify that sequelize-typescript version is 2.1.6 or higher in package.json and that the application starts without errors.📡 Detection & Monitoring
Log Indicators:
- Unusual property assignments in JavaScript objects
- Unexpected prototype modifications
- Application crashes or unexpected behavior
Network Indicators:
- HTTP requests with unusual property names or nested structures
- Requests attempting to modify __proto__ or constructor properties
SIEM Query:
source="application_logs" AND ("__proto__" OR "constructor" OR "prototype") AND status="error"🔗 References
- https://github.com/robinbuschmann/sequelize-typescript/commit/5ce8afdd1671b08c774ce106b000605ba8fccf78
- https://huntr.com/bounties/36a7ecbf-4d3d-462e-86a3-cda7b1ec64e2
- https://github.com/robinbuschmann/sequelize-typescript/commit/5ce8afdd1671b08c774ce106b000605ba8fccf78
- https://huntr.com/bounties/36a7ecbf-4d3d-462e-86a3-cda7b1ec64e2
