CVE-2020-7786
📋 TL;DR
CVE-2020-7786 is a critical OS command injection vulnerability in the macfromip npm package. It allows attackers to execute arbitrary commands on systems running vulnerable versions by injecting malicious input. All users of the macfromip package are affected.
💻 Affected Systems
- macfromip npm package
📦 What is this software?
Macfromip by Macfromip 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 with remote code execution leading to data theft, ransomware deployment, or complete system takeover.
Likely Case
Local privilege escalation or remote code execution in applications that process untrusted input through macfromip functions.
If Mitigated
Limited impact if proper input validation and sandboxing are implemented, though the vulnerability remains present.
🎯 Exploit Status
The vulnerability is straightforward to exploit with publicly available proof-of-concept code. No authentication is required if the vulnerable function processes external input.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 1.1.5 or later
Vendor Advisory: https://www.npmjs.com/package/macfromip
Restart Required: No
Instructions:
1. Update macfromip package: npm update macfromip
2. Verify version is 1.1.5 or higher: npm list macfromip
3. Restart any Node.js applications using macfromip
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation to prevent command injection in the macfromip function calls.
// JavaScript example: Validate input contains only valid MAC/IP patterns
const isValidInput = (input) => /^[0-9a-fA-F.:\/]+$/.test(input);
Remove or Disable macfromip
allTemporarily remove the macfromip package if not essential, or disable its usage.
npm uninstall macfromip
🧯 If You Can't Patch
- Implement strict network segmentation to isolate systems using macfromip from critical assets.
- Deploy application-level firewalls or WAF rules to block suspicious command patterns in input to macfromip functions.
🔍 How to Verify
Check if Vulnerable:
Check package.json or run: npm list macfromip | grep macfromipCheck Version:
npm list macfromip | grep macfromipVerify Fix Applied:
Verify installed version is 1.1.5 or higher: npm list macfromip📡 Detection & Monitoring
Log Indicators:
- Unusual child process spawns from Node.js applications, especially with shell commands
- Error logs showing command execution failures from macfromip
Network Indicators:
- Unexpected outbound connections from Node.js processes to external IPs
SIEM Query:
process.name:node AND process.args:*macfromip* AND process.args:*sh* OR process.args:*cmd*