CVE-2024-29504
📋 TL;DR
This CVE describes a Cross-Site Scripting (XSS) vulnerability in Summernote versions 0.8.18 and earlier. An attacker can inject malicious JavaScript via the codeview parameter, potentially compromising user sessions or stealing sensitive data. Any application using vulnerable Summernote versions is affected.
💻 Affected Systems
- Summernote
📦 What is this software?
Summernote by Summernote
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover, session hijacking, credential theft, and unauthorized actions performed on behalf of authenticated users.
Likely Case
Session hijacking, credential theft, defacement of web pages, and client-side data exfiltration.
If Mitigated
Limited impact with proper Content Security Policy (CSP) headers and input validation, though XSS could still execute in some contexts.
🎯 Exploit Status
Exploitation requires user interaction (e.g., clicking a malicious link) but is straightforward with public proof-of-concept available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v0.8.19 or later
Vendor Advisory: https://github.com/summernote/summernote/pull/3782
Restart Required: No
Instructions:
1. Update Summernote to version 0.8.19 or later via package manager (e.g., npm update summernote). 2. Verify the update in your application's dependencies. 3. Test functionality to ensure compatibility.
🔧 Temporary Workarounds
Input Sanitization
allImplement server-side input validation and sanitization for the codeview parameter to strip or escape malicious scripts.
Content Security Policy (CSP)
allDeploy a strict CSP header to mitigate XSS impact by restricting script execution sources.
🧯 If You Can't Patch
- Disable or restrict access to the codeview feature in Summernote configuration.
- Implement a Web Application Firewall (WAF) with XSS protection rules.
🔍 How to Verify
Check if Vulnerable:
Check the Summernote version in your project's package.json or dependency files; if version is 0.8.18 or earlier, it is vulnerable.Check Version:
npm list summernoteVerify Fix Applied:
After updating, confirm the Summernote version is 0.8.19 or later and test the codeview parameter with a safe payload to ensure no script execution.📡 Detection & Monitoring
Log Indicators:
- Unusual or malicious script patterns in HTTP request logs targeting the codeview parameter.
Network Indicators:
- HTTP requests with suspicious JavaScript payloads in the codeview parameter.
SIEM Query:
source="web_logs" AND (url="*codeview*" AND (content="<script>" OR content="javascript:"))