CVE-2024-46481
📋 TL;DR
The login page of Venki Supravizio BPM up to version 18.1.1 contains an open redirect vulnerability that can be exploited to perform reflected cross-site scripting (XSS) attacks. This allows attackers to redirect users to malicious websites and execute arbitrary JavaScript in the victim's browser context. Organizations using affected versions of this business process management software are at risk.
💻 Affected Systems
- Venki Supravizio BPM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, credentials, or sensitive data from authenticated users, perform actions on their behalf, or redirect them to phishing sites that appear legitimate.
Likely Case
Attackers would use crafted URLs to redirect users to malicious sites for credential harvesting or execute limited JavaScript payloads to steal session information.
If Mitigated
With proper input validation and output encoding, the XSS impact would be eliminated, though open redirects might still allow phishing attempts.
🎯 Exploit Status
The vulnerability requires user interaction (clicking a malicious link) but does not require authentication to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 18.1.2 or later
Vendor Advisory: https://www.venki.com.br/ferramenta-bpm/supravizio/
Restart Required: No
Instructions:
1. Download the latest version from the vendor website. 2. Backup current installation. 3. Apply the update following vendor documentation. 4. Verify the fix is applied.
🔧 Temporary Workarounds
Input Validation Filter
allImplement server-side validation to reject or sanitize redirect URLs containing JavaScript or malicious characters
Content Security Policy
allImplement strict CSP headers to prevent execution of inline scripts and restrict redirect destinations
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with XSS and open redirect protection rules
- Educate users about phishing risks and not clicking untrusted links to the login page
🔍 How to Verify
Check if Vulnerable:
Test the login page with crafted URLs containing redirect parameters and XSS payloads to see if they executeCheck Version:
Check the software version in the application interface or configuration filesVerify Fix Applied:
After patching, test the same exploit attempts to confirm they are blocked or sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual redirect parameters in login page requests
- JavaScript payloads in URL parameters
Network Indicators:
- HTTP requests with suspicious redirect parameters to the login endpoint
SIEM Query:
source="web_server" AND (url="*login*" AND (url="*javascript:*" OR url="*data:*" OR url="*%3Cscript%3E*"))