CVE-2022-1295
📋 TL;DR
CVE-2022-1295 is a prototype pollution vulnerability in fullpage.js that allows attackers to modify JavaScript object prototypes, potentially leading to remote code execution or denial of service. This affects websites using fullpage.js versions before 4.0.2. Attackers can exploit this by injecting malicious payloads through user-controlled inputs.
💻 Affected Systems
- fullpage.js
📦 What is this software?
Fullpage by Fullpage Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution leading to complete system compromise, data theft, or website defacement.
Likely Case
Denial of service, website manipulation, or client-side attacks affecting user sessions.
If Mitigated
Limited impact with proper input validation and Content Security Policy (CSP) in place.
🎯 Exploit Status
Exploitation requires user interaction or malicious input injection but is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.0.2
Vendor Advisory: https://github.com/alvarotrigo/fullpage.js/commit/bf62492a22e5d296e63c3ed918a42fc5645a0d48
Restart Required: No
Instructions:
1. Update fullpage.js to version 4.0.2 or later. 2. Replace the fullpage.js file in your project with the patched version. 3. Test your application for compatibility.
🔧 Temporary Workarounds
Input Sanitization
allImplement strict input validation and sanitization for user-controlled data passed to fullpage.js.
Content Security Policy (CSP)
allEnforce a strict CSP to mitigate potential code execution.
🧯 If You Can't Patch
- Disable or remove fullpage.js if not essential.
- Implement network segmentation and web application firewalls (WAF) to block malicious payloads.
🔍 How to Verify
Check if Vulnerable:
Check the fullpage.js version in your HTML source or package.json; versions <4.0.2 are vulnerable.Check Version:
grep -r 'fullpage.js' your_project_directory | grep -o 'v[0-9.]\+'Verify Fix Applied:
Confirm fullpage.js version is 4.0.2 or later and test for prototype pollution using security tools.📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript errors, unexpected object modifications, or payloads in user inputs.
Network Indicators:
- HTTP requests with malicious strings targeting fullpage.js endpoints.
SIEM Query:
source="web_logs" AND (fullpage.js OR prototype) AND (error OR malicious)🔗 References
- https://github.com/alvarotrigo/fullpage.js/commit/bf62492a22e5d296e63c3ed918a42fc5645a0d48
- https://huntr.dev/bounties/3b9d450c-24ac-4037-b04d-4d4dafbf593a
- https://github.com/alvarotrigo/fullpage.js/commit/bf62492a22e5d296e63c3ed918a42fc5645a0d48
- https://huntr.dev/bounties/3b9d450c-24ac-4037-b04d-4d4dafbf593a
