CVE-2025-60828
📋 TL;DR
WukongCRM 9.0-JAVA contains a fastjson deserialization vulnerability in the /OaExamine/setOaExamine interface that allows remote code execution. This affects organizations using this specific CRM version. Attackers can exploit this to execute arbitrary code on affected systems.
💻 Affected Systems
- WukongCRM
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the server, data exfiltration, and lateral movement within the network.
Likely Case
Remote code execution leading to web shell deployment, credential theft, and installation of persistence mechanisms.
If Mitigated
Limited impact with proper network segmentation and input validation preventing successful exploitation.
🎯 Exploit Status
Requires understanding of fastjson deserialization payloads and access to the vulnerable endpoint.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.0.1 or later
Vendor Advisory: https://github.com/ChangeYourWay/post/blob/main/WukongCRM-9.0-JAVA.md
Restart Required: No
Instructions:
1. Update to WukongCRM version 9.0.1 or later. 2. Replace the vulnerable fastjson library with a patched version. 3. Restart the application service.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation for the /OaExamine/setOaExamine endpoint to reject malicious payloads.
Endpoint Restriction
allRestrict access to the vulnerable endpoint using firewall rules or web application firewall.
🧯 If You Can't Patch
- Implement network segmentation to isolate the CRM system from critical infrastructure.
- Deploy a web application firewall with rules to detect and block fastjson deserialization attempts.
🔍 How to Verify
Check if Vulnerable:
Check if WukongCRM version is 9.0-JAVA and the /OaExamine/setOaExamine endpoint is accessible.Check Version:
Check application configuration files or admin panel for version information.Verify Fix Applied:
Verify the application version is 9.0.1 or later and test the endpoint with safe payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /OaExamine/setOaExamine with JSON payloads containing Java class names
Network Indicators:
- HTTP requests to /OaExamine/setOaExamine with Content-Type: application/json
SIEM Query:
source="web_server" AND uri="/OaExamine/setOaExamine" AND method="POST" AND content_type="application/json"