CVE-2024-24293
📋 TL;DR
This CVE describes a prototype pollution vulnerability in @bit/loader v10.0.3 that allows attackers to modify JavaScript object prototypes, potentially leading to arbitrary code execution. It affects applications using this specific version of the @bit/loader package for module loading. Attackers can exploit this by manipulating the 'M' function's 'e' argument in index.js.
💻 Affected Systems
- @bit/loader
⚠️ 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
Application compromise allowing data manipulation, privilege escalation, or denial of service.
If Mitigated
Limited impact with proper input validation and sandboxing, potentially causing application crashes.
🎯 Exploit Status
Public proof-of-concept exists in the provided GitHub gist. Exploitation requires attacker-controlled input to the vulnerable function.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v10.0.4 or later
Vendor Advisory: https://github.com/MiguelCastillo/bit-loader
Restart Required: Yes
Instructions:
1. Check current version: npm list @bit/loader
2. Update package: npm update @bit/loader
3. Verify update: npm list @bit/loader
4. Restart application services
🔧 Temporary Workarounds
Input Validation
allImplement strict input validation for the 'M' function arguments
Package Lock
allPin @bit/loader to a safe version in package.json
npm install @bit/loader@10.0.4
🧯 If You Can't Patch
- Implement network segmentation to isolate vulnerable systems
- Deploy web application firewall (WAF) rules to detect prototype pollution attempts
🔍 How to Verify
Check if Vulnerable:
Check package.json or run: npm list @bit/loader | grep 10.0.3Check Version:
npm list @bit/loaderVerify Fix Applied:
Verify installed version is 10.0.4 or later: npm list @bit/loader📡 Detection & Monitoring
Log Indicators:
- Unusual function calls to 'M' with unexpected arguments
- Application crashes or abnormal behavior
Network Indicators:
- HTTP requests containing malicious payloads targeting the vulnerable endpoint
SIEM Query:
source="application.logs" AND "M function" AND ("prototype" OR "__proto__")