CVE-2024-1440
📋 TL;DR
An open redirection vulnerability in WSO2 products allows attackers to craft malicious authentication links that redirect users to attacker-controlled sites. This affects WSO2 products with multi-option authentication enabled, potentially enabling phishing attacks against users.
💻 Affected Systems
- WSO2 Identity Server
- WSO2 API Manager
- WSO2 Enterprise Integrator
- WSO2 Micro Integrator
- WSO2 Streaming Integrator
- WSO2 Micro Gateway
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Users are redirected to sophisticated phishing sites that harvest credentials, session tokens, or install malware, leading to account compromise and data breaches.
Likely Case
Users are tricked into visiting phishing pages that attempt to steal login credentials or personal information.
If Mitigated
With proper user awareness training and browser security controls, users may recognize suspicious redirects, limiting successful attacks.
🎯 Exploit Status
Exploitation requires crafting a malicious URL with a redirect parameter, which is straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply security updates: WSO2 Identity Server 6.1.0.1, WSO2 API Manager 4.2.0.1, WSO2 Enterprise Integrator 7.2.0.1, WSO2 Micro Integrator 4.2.0.1, WSO2 Streaming Integrator 2.2.0.1, WSO2 Micro Gateway 4.2.0.1
Vendor Advisory: https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2024/WSO2-2024-3171/
Restart Required: Yes
Instructions:
1. Download the security update from WSO2's official repository. 2. Backup your current installation. 3. Apply the patch according to WSO2's update documentation. 4. Restart the affected services. 5. Verify the fix is applied.
🔧 Temporary Workarounds
Disable Multi-Option Authentication
allTemporarily disable multi-option authentication feature until patching is complete.
Edit authentication.xml configuration file and set <MultiOptionAuthenticator> to disabled
Implement URL Validation Filter
allAdd a web application filter to validate and sanitize redirect URLs.
Configure web.xml with a custom filter that validates redirect parameters against allowed domains
🧯 If You Can't Patch
- Implement strict input validation for all URL parameters in authentication endpoints
- Deploy web application firewall (WAF) rules to detect and block open redirect attempts
🔍 How to Verify
Check if Vulnerable:
Check if multi-option authentication is enabled and test with crafted redirect URLs containing external domains.Check Version:
Check product version via management console or review product documentation for version detailsVerify Fix Applied:
After patching, test that redirect URLs are properly validated and external domains are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual redirect patterns in authentication logs
- Requests with suspicious redirect parameters
Network Indicators:
- HTTP 302 redirects to external domains from authentication endpoints
SIEM Query:
source="wso2-auth.log" AND (url="*redirect=*" OR status=302) AND NOT dest_domain="*.yourdomain.com"