CVE-2023-26127
📋 TL;DR
CVE-2023-26127 is a command injection vulnerability in the n158 npm package that allows attackers to execute arbitrary commands on the host system. This affects any application using vulnerable versions of the n158 package. Attackers need Node.js code execution capability within the target environment to exploit this vulnerability.
💻 Affected Systems
- n158 npm package
📦 What is this software?
N158 by N158 Project
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing arbitrary command execution with the privileges of the Node.js process, potentially leading to data theft, ransomware deployment, or complete system takeover.
Likely Case
Limited command execution within the application context, potentially allowing file system access, data exfiltration, or lateral movement within the network.
If Mitigated
No impact if proper input validation and sandboxing are implemented, or if the vulnerable function is not exposed to untrusted inputs.
🎯 Exploit Status
Exploitation requires the ability to run Node.js code in the target environment. The attacker needs to control inputs to the vulnerable function.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: None available
Vendor Advisory: https://security.snyk.io/vuln/SNYK-JS-N158-3183746
Restart Required: No
Instructions:
1. Remove n158 package from your project. 2. Find alternative packages for the functionality. 3. Update package.json and lock files. 4. Test application functionality with replacement.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for all user inputs passed to the module.exports function
Remove or Replace Package
allCompletely remove the n158 package and replace with a secure alternative
npm uninstall n158
🧯 If You Can't Patch
- Implement strict network segmentation to isolate systems using n158
- Deploy application-level firewalls to monitor and block suspicious command execution patterns
🔍 How to Verify
Check if Vulnerable:
Check if n158 package is installed in your Node.js project dependenciesCheck Version:
npm list n158Verify Fix Applied:
Verify n158 package is no longer in package.json or node_modules directory📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns in Node.js process logs
- Suspicious child process spawns from Node.js applications
Network Indicators:
- Unexpected outbound connections from Node.js processes
- Command and control traffic patterns
SIEM Query:
process.name:node.exe AND process.args:*cmd* OR process.args:*powershell* OR process.args:*bash*