CVE-2025-27103
📋 TL;DR
This vulnerability allows authenticated users in DataEase to bypass a previous security patch and read/deserialize arbitrary files through the background JDBC connection. It affects DataEase installations prior to version 2.10.6. The vulnerability requires authenticated access but can lead to sensitive file disclosure.
💻 Affected Systems
- DataEase
📦 What is this software?
Dataease by Dataease
⚠️ Risk & Real-World Impact
Worst Case
Authenticated attackers could read sensitive system files, configuration files, or database credentials, potentially leading to full system compromise through credential theft or further exploitation.
Likely Case
Authenticated users with malicious intent could access sensitive business data, configuration files, or other restricted files within the application's accessible filesystem paths.
If Mitigated
With proper access controls and network segmentation, the impact is limited to files accessible by the DataEase application process, but sensitive data could still be exposed.
🎯 Exploit Status
Exploitation requires authenticated access. The vulnerability is a bypass of a previous patch, suggesting attackers may have existing knowledge of exploitation techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.10.6
Vendor Advisory: https://github.com/dataease/dataease/security/advisories/GHSA-v4gg-8rp3-ccjx
Restart Required: Yes
Instructions:
1. Backup your DataEase installation and data. 2. Download version 2.10.6 from the official repository. 3. Stop the DataEase service. 4. Replace the installation with version 2.10.6. 5. Restart the DataEase service. 6. Verify the version is now 2.10.6.
🧯 If You Can't Patch
- Restrict access to DataEase to only trusted, authenticated users with minimal necessary privileges.
- Implement network segmentation to isolate DataEase servers from sensitive systems and limit file system access through application permissions.
🔍 How to Verify
Check if Vulnerable:
Check the DataEase version. If it's below 2.10.6, the system is vulnerable.Check Version:
Check the DataEase web interface admin panel or application logs for version information. For Docker deployments: docker exec [container_name] cat /opt/dataease/version.txtVerify Fix Applied:
After patching, verify the version is 2.10.6 or higher using the version check command.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in application logs
- Multiple failed or unusual JDBC connection attempts from authenticated users
- Access to files outside expected data directories
Network Indicators:
- Unusual outbound connections from DataEase server to unexpected destinations
- Suspicious JDBC connection patterns
SIEM Query:
source="dataease.logs" AND (event="file_access" OR event="jdbc_connection") AND (path NOT CONTAINS "/expected/path/" OR destination_ip NOT IN [allowed_ips])