CVE-2024-57766
📋 TL;DR
This vulnerability allows remote code execution through fastjson deserialization in MSFM's table editing component. Attackers can exploit this to execute arbitrary code on affected systems. All systems running vulnerable versions of MSFM are affected.
💻 Affected Systems
- MSFM
📦 What is this software?
Mysiteforme by Wangl1989
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining full control over the server, allowing data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Remote code execution leading to web server compromise, data exfiltration, and lateral movement within the network.
If Mitigated
Limited impact if proper network segmentation and application firewalls block malicious payloads before reaching the vulnerable endpoint.
🎯 Exploit Status
Fastjson deserialization vulnerabilities are well-understood and frequently exploited. The component appears to be accessible without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2025.01.01 or later
Vendor Advisory: https://gitee.com/wanglingxiao/mysiteforme/issues/IBFVHR
Restart Required: Yes
Instructions:
1. Download MSFM version 2025.01.01 or later from the official repository. 2. Backup current installation and configuration. 3. Replace the vulnerable files with patched versions. 4. Restart the MSFM service.
🔧 Temporary Workarounds
Disable vulnerable endpoint
linuxBlock or disable access to the system/table/editField component
# Add firewall rule to block access to vulnerable endpoint
iptables -A INPUT -p tcp --dport [MSFM_PORT] -m string --string "system/table/editField" --algo bm -j DROP
Input validation filter
allImplement WAF rules to filter malicious fastjson payloads
# Example mod_security rule
SecRule REQUEST_BODY "@rx \\"@type\\"" "id:1001,phase:2,deny,msg:'Fastjson deserialization attempt'"
# Add to web server configuration
🧯 If You Can't Patch
- Implement strict network segmentation to isolate MSFM from critical systems
- Deploy web application firewall with rules specifically targeting fastjson deserialization patterns
🔍 How to Verify
Check if Vulnerable:
Check MSFM version and verify if system/table/editField endpoint accepts fastjson payloads. Test with safe deserialization payloads if possible.Check Version:
Check MSFM configuration files or admin interface for version information. Look for version.txt or similar files in installation directory.Verify Fix Applied:
Verify MSFM version is 2025.01.01 or later. Test that system/table/editField endpoint properly validates input and rejects malicious fastjson payloads.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to system/table/editField endpoint
- Java process spawning unexpected child processes
- Error logs containing fastjson deserialization exceptions
Network Indicators:
- HTTP requests containing fastjson payloads with @type parameters
- Unusual outbound connections from MSFM server
SIEM Query:
source="msfm.logs" AND (uri="/system/table/editField" OR message="fastjson")