CVE-2024-39014
📋 TL;DR
CVE-2024-39014 is a prototype pollution vulnerability in ahilfoley cahil/utils v2.3.2 that allows attackers to inject arbitrary properties into object prototypes. This can lead to remote code execution or denial of service. Anyone using the vulnerable version of this utility library is affected.
💻 Affected Systems
- ahilfoley cahil/utils
⚠️ 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 persistent backdoor installation.
Likely Case
Denial of service through application crashes or memory corruption, potentially disrupting services.
If Mitigated
Limited impact if input validation and sanitization are implemented, though prototype pollution remains dangerous.
🎯 Exploit Status
Proof of concept available in references, exploitation is straightforward once the vulnerable endpoint is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v2.3.3 or later
Vendor Advisory: https://gist.github.com/mestrtee/0501db31c1a6864a169e47097f26ac57
Restart Required: Yes
Instructions:
1. Update cahil/utils to v2.3.3 or later using npm update cahil/utils. 2. Restart all applications using this library. 3. Verify the update with npm list cahil/utils.
🔧 Temporary Workarounds
Input validation and sanitization
allImplement strict input validation to reject unexpected properties in objects passed to the set function.
Object.freeze on prototypes
allFreeze Object.prototype and other base prototypes to prevent pollution.
Object.freeze(Object.prototype);
🧯 If You Can't Patch
- Implement WAF rules to detect and block prototype pollution patterns in HTTP requests.
- Isolate affected applications in network segments with strict egress filtering to limit lateral movement.
🔍 How to Verify
Check if Vulnerable:
Check package.json or run npm list cahil/utils to see if version 2.3.2 is installed.Check Version:
npm list cahil/utilsVerify Fix Applied:
After update, verify npm list cahil/utils shows version 2.3.3 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual property assignments in object operations
- Application crashes with prototype-related errors
Network Indicators:
- HTTP requests with unusual nested property patterns attempting object manipulation
SIEM Query:
source="application_logs" AND ("prototype" OR "__proto__") AND error