CVE-2020-7715
📋 TL;DR
CVE-2020-7715 is a prototype pollution vulnerability in the deep-get-set npm package that allows attackers to modify object prototypes, potentially leading to denial of service, remote code execution, or privilege escalation. Any application using this package is affected, particularly Node.js applications that process untrusted user input. The vulnerability exists in all versions of the package.
💻 Affected Systems
- deep-get-set npm package
📦 What is this software?
Deep Get Set by Deep Get Set 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
Remote code execution leading to complete system compromise, data theft, or ransomware deployment.
Likely Case
Denial of service, application crashes, or unauthorized data manipulation through prototype pollution.
If Mitigated
Limited impact if input validation and sanitization are implemented, though the core vulnerability remains.
🎯 Exploit Status
Exploitation requires attacker-controlled input to the vulnerable function. Public proof-of-concept code exists demonstrating prototype pollution.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.2
Vendor Advisory: https://www.npmjs.com/advisories/1321
Restart Required: Yes
Instructions:
1. Update package.json to specify 'deep-get-set': '^1.1.2'. 2. Run 'npm update deep-get-set'. 3. Restart the application. 4. Test functionality.
🔧 Temporary Workarounds
Input validation and sanitization
allImplement strict input validation to prevent malicious payloads from reaching the deep-get-set function.
Object.freeze on Object.prototype
allPrevent prototype pollution by freezing Object.prototype (may break legitimate functionality).
Object.freeze(Object.prototype)
🧯 If You Can't Patch
- Remove deep-get-set dependency and replace with alternative libraries like lodash.get
- Implement strict input validation and sanitization for all user inputs
🔍 How to Verify
Check if Vulnerable:
Check package.json or run 'npm list deep-get-set' to see if version is below 1.1.2.Check Version:
npm list deep-get-setVerify Fix Applied:
Verify package.json specifies 'deep-get-set': '^1.1.2' and 'npm list deep-get-set' shows version 1.1.2 or higher.📡 Detection & Monitoring
Log Indicators:
- Unexpected application crashes
- Unusual prototype modifications in logs
- Error messages related to object property access
Network Indicators:
- Unusual HTTP requests with crafted payloads targeting deep-get-set functionality
SIEM Query:
source='application.log' AND (message LIKE '%deep-get-set%' OR message LIKE '%prototype%' OR message LIKE '%unexpected property%')