CVE-2024-44776
📋 TL;DR
An open redirect vulnerability in vTiger CRM v7.4.0 allows attackers to craft malicious URLs that redirect users to untrusted external sites. This affects all users of vTiger CRM v7.4.0 who click on manipulated links, potentially leading to phishing attacks or malware distribution.
💻 Affected Systems
- vTiger CRM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Users are redirected to sophisticated phishing sites that steal credentials or install malware, leading to account compromise and data breaches.
Likely Case
Attackers use the vulnerability for phishing campaigns, tricking users into visiting malicious sites that mimic legitimate services.
If Mitigated
With proper user awareness training and URL filtering, the impact is limited to minor inconvenience with no data loss.
🎯 Exploit Status
Exploitation requires user interaction (clicking a link). Public proof-of-concept available on Packet Storm.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://vtiger.com
Restart Required: No
Instructions:
Check vTiger vendor website for security updates. Consider upgrading to a newer version if available.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to reject or sanitize URLs in the page parameter that point to external domains.
Web Application Firewall Rule
allConfigure WAF to block requests containing external URLs in the page parameter.
🧯 If You Can't Patch
- Implement strict URL filtering at network perimeter to block known malicious domains.
- Educate users to avoid clicking on untrusted links and verify URL destinations before accessing.
🔍 How to Verify
Check if Vulnerable:
Test by accessing a crafted URL with an external domain in the page parameter (e.g., http://target/vtigercrm/index.php?page=http://evil.com) and check if redirect occurs.Check Version:
Check vTiger CRM version in admin panel or configuration files.Verify Fix Applied:
After applying workarounds, retest with the same crafted URL; redirect should be blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- HTTP logs showing requests with external URLs in page parameter
- User reports of unexpected redirects
Network Indicators:
- Outbound connections to suspicious domains following vTiger access
SIEM Query:
source="web_logs" AND uri="*page=*" AND uri="*http://*"