CVE-2024-4598
📋 TL;DR
This CVE describes an information disclosure vulnerability in WSO2 products where authenticated users can access sensitive business data from other mediation contexts due to improper state isolation in the enrich mediator. It affects organizations using vulnerable WSO2 products for message processing. The vulnerability does not compromise credentials but exposes business information handled during message flows.
💻 Affected Systems
- WSO2 API Manager
- WSO2 Enterprise Integrator
- WSO2 Micro Integrator
- WSO2 Streaming Integrator
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Authenticated attackers could systematically extract sensitive business data from multiple mediation contexts, potentially exposing confidential customer information, financial data, or proprietary business logic.
Likely Case
Authenticated users accidentally or intentionally viewing limited amounts of business data from other contexts they shouldn't have access to, leading to data privacy violations.
If Mitigated
With proper access controls and monitoring, impact is limited to minimal data leakage that can be quickly detected and contained.
🎯 Exploit Status
Exploitation requires authenticated access and understanding of WSO2 mediation flows. Attackers need to craft specific requests to trigger the enrich mediator in vulnerable patterns.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisory for specific patched versions of each product
Vendor Advisory: https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2025/WSO2-2024-3355/
Restart Required: No
Instructions:
1. Review the vendor advisory for exact patched versions. 2. Apply the security patch or upgrade to the patched version. 3. Test the fix in a non-production environment first. 4. Deploy to production systems.
🔧 Temporary Workarounds
Disable or restrict enrich mediator usage
allTemporarily disable or restrict usage of the enrich mediator in mediation flows until patching can be completed.
Review and modify mediation flows to avoid enrich mediator usage where possible
Implement strict access controls
allEnforce strict authentication and authorization controls to limit which users can access mediation flows.
Configure WSO2 identity provider with minimal necessary permissions
Implement role-based access controls for mediation flows
🧯 If You Can't Patch
- Implement network segmentation to isolate WSO2 instances from sensitive data sources
- Enable comprehensive logging and monitoring of all mediation flow executions and enrich mediator usage
🔍 How to Verify
Check if Vulnerable:
Check if your WSO2 product version falls within the vulnerable range specified in the vendor advisory and if you use the enrich mediator in mediation flows.Check Version:
Check WSO2 product documentation for version check command specific to your deployment (typically in management console or via CLI)Verify Fix Applied:
After applying patches, verify the version is updated to a patched version and test that enrich mediator properly isolates state between executions.📡 Detection & Monitoring
Log Indicators:
- Unusual patterns of enrich mediator usage
- Multiple mediation contexts accessed by single user in short timeframes
- Access to mediation flows that should be isolated
Network Indicators:
- Increased traffic to mediation endpoints from authenticated users
- Patterns of repeated requests to enrich mediator endpoints
SIEM Query:
Example: 'source="wso2-logs" AND (enrich_mediator OR mediation_context) AND user_activity="suspicious"'