CVE-2024-36573
📋 TL;DR
CVE-2024-36573 is a prototype pollution vulnerability in almela obx versions before 0.0.4 that allows attackers to modify JavaScript object prototypes, potentially leading to arbitrary code execution. This affects any application using vulnerable versions of the @almela/obx library. The vulnerability is particularly dangerous because it can be exploited to compromise the entire application environment.
💻 Affected Systems
- @almela/obx
⚠️ 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
Full system compromise with remote code execution, allowing attackers to execute arbitrary commands, steal sensitive data, or deploy malware.
Likely Case
Application compromise leading to data theft, privilege escalation, or denial of service through prototype pollution.
If Mitigated
Limited impact with proper input validation and security controls, potentially reduced to denial of service.
🎯 Exploit Status
Proof of concept available in GitHub gist references. Exploitation requires attacker to control input to vulnerable functions.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.0.4
Vendor Advisory: https://gist.github.com/mestrtee/fd8181bbc180d775f8367a2b9e0ffcd1
Restart Required: Yes
Instructions:
1. Update package.json to specify @almela/obx version 0.0.4 or higher. 2. Run 'npm update @almela/obx' or 'yarn upgrade @almela/obx'. 3. Restart all affected applications and services.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation and sanitization for all user-controlled data passed to obx functions.
Object.freeze on Prototypes
allUse Object.freeze() on critical object prototypes to prevent pollution.
Object.freeze(Object.prototype);
Object.freeze(Array.prototype);
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs
- Use web application firewall (WAF) rules to detect and block prototype pollution attempts
🔍 How to Verify
Check if Vulnerable:
Check package.json or package-lock.json for @almela/obx version. If version is <0.0.4, system is vulnerable.Check Version:
npm list @almela/obx | grep @almela/obxVerify Fix Applied:
Verify @almela/obx version is 0.0.4 or higher in package.json and node_modules/@almela/obx/package.json.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript errors related to object properties
- Unexpected modifications to object prototypes
- Suspicious input patterns in obx function calls
Network Indicators:
- Unusual HTTP requests containing prototype pollution patterns
- Requests with nested object structures targeting obx endpoints
SIEM Query:
source="application_logs" AND ("prototype" OR "__proto__" OR "constructor") AND ("obx" OR "@almela/obx")