CVE-2022-37830
📋 TL;DR
CVE-2022-37830 is a cross-site scripting (XSS) vulnerability in Interway a.s WebJET CMS version 8.6.896 that allows attackers to inject malicious scripts into web pages viewed by users. This affects organizations using this specific CMS version, potentially compromising user sessions and data. The high CVSS score reflects the significant impact when exploited.
💻 Affected Systems
- Interway a.s WebJET CMS
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, perform actions on behalf of authenticated users, or install malware on client systems.
Likely Case
Session hijacking, credential theft, defacement of web pages, or redirection to phishing sites.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
XSS vulnerabilities are commonly exploited; public proof-of-concept details likely in referenced PDF.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified in references; check vendor for updates beyond 8.6.896.
Vendor Advisory: http://webjet.com
Restart Required: No
Instructions:
1. Visit vendor website for latest patches. 2. Apply patch per vendor instructions. 3. Test functionality post-patch.
🔧 Temporary Workarounds
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources.
Add 'Content-Security-Policy' header in web server config with appropriate directives.
Input Validation and Output Encoding
allSanitize user inputs and encode outputs in the CMS.
Modify CMS code to filter/escape user inputs before rendering.
🧯 If You Can't Patch
- Deploy a web application firewall (WAF) with XSS protection rules.
- Restrict access to the CMS admin interface to trusted IP addresses only.
🔍 How to Verify
Check if Vulnerable:
Check CMS version in admin panel or via version file; if 8.6.896, assume vulnerable.Check Version:
Check admin dashboard or config files for version number.Verify Fix Applied:
Test for XSS by attempting to inject scripts in user inputs; if blocked or encoded, fix likely applied.📡 Detection & Monitoring
Log Indicators:
- Unusual script tags or JavaScript in HTTP requests
- Multiple failed login attempts from same IP
Network Indicators:
- HTTP requests with malicious payloads in parameters
- Unexpected redirects in traffic
SIEM Query:
Search for patterns like '<script>' or 'javascript:' in web server logs.