CVE-2020-7717
📋 TL;DR
CVE-2020-7717 is a prototype pollution vulnerability in the dot-notes npm package that allows attackers to inject arbitrary properties into JavaScript objects, potentially leading to remote code execution or denial of service. This affects all applications using any version of the dot-notes package. The vulnerability is particularly dangerous because it can be exploited through user-controlled input.
💻 Affected Systems
- dot-notes npm package
📦 What is this software?
Dot Notes by Dot Notes 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, privilege escalation, or data manipulation through prototype pollution attacks.
If Mitigated
Limited impact if input validation and sanitization prevent malicious payloads from reaching vulnerable functions.
🎯 Exploit Status
Proof-of-concept code is publicly available, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.0 and later
Vendor Advisory: https://www.npmjs.com/advisories/1548
Restart Required: Yes
Instructions:
1. Update package.json to specify dot-notes version 1.1.0 or higher. 2. Run 'npm update dot-notes' or 'yarn upgrade dot-notes'. 3. Restart your application to load the patched version.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation to prevent malicious payloads from reaching the create() function.
Package Locking
allUse npm-shrinkwrap.json or package-lock.json to lock to a safe version until patching is possible.
npm shrinkwrap
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs passed to dot-notes functions.
- Use application firewalls or middleware to filter and block suspicious payloads targeting prototype pollution patterns.
🔍 How to Verify
Check if Vulnerable:
Check package.json or package-lock.json for dot-notes version. If version is below 1.1.0, the system is vulnerable.Check Version:
npm list dot-notes | grep dot-notesVerify Fix Applied:
Verify dot-notes version is 1.1.0 or higher using 'npm list dot-notes' or checking package.json.📡 Detection & Monitoring
Log Indicators:
- Unusual error messages related to object property assignments
- Unexpected property injections in JavaScript objects
- Crashes or abnormal behavior in applications using dot-notes
Network Indicators:
- HTTP requests containing specially crafted payloads with __proto__ or constructor properties
- Unusual patterns of requests to endpoints using dot-notes functionality
SIEM Query:
source="application_logs" AND ("dot-notes" OR "prototype pollution" OR "__proto__" OR "constructor")