CVE-2024-7552
📋 TL;DR
This critical vulnerability in DataGear allows remote attackers to execute arbitrary code through expression language injection in the Data Schema Page component. Attackers can exploit improper neutralization of special elements in the evaluateVariableExpression function to achieve remote code execution. All DataGear users up to version 5.0.0 are affected.
💻 Affected Systems
- DataGear
📦 What is this software?
Datagear by Datagear
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with remote code execution leading to data theft, system takeover, and lateral movement within the network.
Likely Case
Remote code execution allowing attackers to execute arbitrary commands, access sensitive data, and potentially pivot to other systems.
If Mitigated
Limited impact if proper network segmentation and least privilege principles are implemented, though the vulnerability still presents significant risk.
🎯 Exploit Status
Exploit details have been publicly disclosed and the vulnerability can be exploited remotely without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.0.1 or later
Vendor Advisory: https://gitee.com/datagear/datagear/issues/IAF3H7
Restart Required: Yes
Instructions:
1. Download DataGear version 5.0.1 or later from the official repository. 2. Backup your current installation and configuration. 3. Stop the DataGear service. 4. Replace the installation with the patched version. 5. Restart the DataGear service.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to DataGear instances to only trusted IP addresses
iptables -A INPUT -p tcp --dport [DATAGEAR_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [DATAGEAR_PORT] -j DROP
Disable Data Schema Page
allTemporarily disable or restrict access to the vulnerable Data Schema Page component
🧯 If You Can't Patch
- Implement strict network segmentation and firewall rules to limit access to DataGear instances
- Deploy web application firewall (WAF) rules to detect and block expression language injection attempts
🔍 How to Verify
Check if Vulnerable:
Check the DataGear version. If it's 5.0.0 or earlier, the system is vulnerable.Check Version:
Check the DataGear web interface or installation directory for version informationVerify Fix Applied:
Verify the installation is running DataGear version 5.0.1 or later.📡 Detection & Monitoring
Log Indicators:
- Unusual expression language patterns in Data Schema Page requests
- Multiple failed expression evaluation attempts
- Suspicious payloads containing expression language syntax
Network Indicators:
- HTTP requests to Data Schema Page endpoints with unusual expression language payloads
- Traffic patterns indicating expression injection attempts
SIEM Query:
source="datagear" AND ("evaluateVariableExpression" OR "Data Schema Page") AND (payload="${*" OR payload="#{*" OR payload="${" OR payload="#{")