CVE-2024-57079
📋 TL;DR
This vulnerability is a prototype pollution flaw in the lib.deepMerge function of @zag-js/core v0.50.0 that allows attackers to supply crafted payloads to cause Denial of Service (DoS). It affects applications using this specific version of the @zag-js/core library for JavaScript component development. The attack disrupts service availability by exploiting object manipulation.
💻 Affected Systems
- @zag-js/core
⚠️ 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
Complete application unavailability due to DoS, potentially affecting all users and causing service disruption.
Likely Case
Partial or intermittent service degradation affecting specific application functions that use the vulnerable deepMerge function.
If Mitigated
Minimal impact with proper input validation and updated library versions.
🎯 Exploit Status
Exploitation requires understanding of prototype pollution techniques and ability to supply crafted payloads to the deepMerge function.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.50.1 or later
Vendor Advisory: https://github.com/chakra-ui/zag/releases
Restart Required: No
Instructions:
1. Update @zag-js/core dependency to v0.50.1 or later. 2. Run npm update @zag-js/core or yarn upgrade @zag-js/core. 3. Rebuild and redeploy application.
🔧 Temporary Workarounds
Input Validation
allImplement strict input validation for objects passed to deepMerge function to reject malicious payloads.
Function Wrapper
allWrap deepMerge calls with sanitization logic to prevent prototype pollution.
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) rules to detect and block prototype pollution patterns
- Isolate affected services and implement rate limiting to reduce DoS impact
🔍 How to Verify
Check if Vulnerable:
Check package.json or package-lock.json for @zag-js/core version 0.50.0Check Version:
npm list @zag-js/core or grep @zag-js/core package.jsonVerify Fix Applied:
Verify @zag-js/core version is 0.50.1 or higher after update📡 Detection & Monitoring
Log Indicators:
- Unusual application crashes
- High memory consumption alerts
- DeepMerge function error logs
Network Indicators:
- Increased error responses (5xx)
- Unusual payload patterns in requests
SIEM Query:
source="application_logs" AND ("deepMerge" OR "prototype") AND (error OR crash)