CVE-2023-26129
📋 TL;DR
CVE-2023-26129 is a command injection vulnerability in the bwm-ng npm package that allows attackers to execute arbitrary system commands on the host. This affects any application using vulnerable versions of bwm-ng where attackers can control input to the 'check' function. The vulnerability requires Node.js execution capability within the target environment.
💻 Affected Systems
- bwm-ng npm package
📦 What is this software?
Bwm Ng by Bwm Ng 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 remote code execution, data exfiltration, lateral movement, and persistence establishment
Likely Case
Limited command execution within the application's context, potentially leading to data leakage or service disruption
If Mitigated
No impact if proper input validation and sandboxing prevent command injection
🎯 Exploit Status
Exploitation requires ability to run Node.js code and control input to the vulnerable function
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check npm registry for latest patched version
Vendor Advisory: https://security.snyk.io/vuln/SNYK-JS-BWMNG-3175876
Restart Required: Yes
Instructions:
1. Check current bwm-ng version: npm list bwm-ng
2. Update package: npm update bwm-ng
3. Verify update: npm list bwm-ng
4. Restart application services
🔧 Temporary Workarounds
Input validation wrapper
allImplement strict input validation for all parameters passed to bwm-ng functions
// Example: Validate input before calling vulnerable function
function safeCheck(input) {
if (!/^[a-zA-Z0-9\s]+$/.test(input)) {
throw new Error('Invalid input');
}
return originalCheck(input);
}
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user-controlled inputs
- Run application with minimal privileges and in sandboxed/containerized environments
🔍 How to Verify
Check if Vulnerable:
Check package.json or run: npm list bwm-ng | grep bwm-ngCheck Version:
npm list bwm-ng | grep bwm-ngVerify Fix Applied:
Verify updated version and test with safe input validation📡 Detection & Monitoring
Log Indicators:
- Unusual command execution patterns
- Suspicious process spawning from Node.js
- Error logs showing command injection attempts
Network Indicators:
- Unexpected outbound connections from Node.js processes
- Command and control traffic patterns
SIEM Query:
process.name:node AND (process.cmdline:*child_process* OR process.cmdline:*exec* OR process.cmdline:*spawn*)