CVE-2017-14702
📋 TL;DR
CVE-2017-14702 is a critical remote code execution vulnerability in ERS Data System 1.8.1.0 caused by insecure deserialization of the 'com.branaghgroup.ecers.update.UpdateRequest' object. Attackers can exploit this to execute arbitrary code on affected systems, potentially gaining full control. Organizations using ERS Data System 1.8.1.0 are affected.
💻 Affected Systems
- ERS Data System
📦 What is this software?
Ers Data System by Branaghgroup
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining administrative privileges, data exfiltration, ransomware deployment, and persistent backdoor installation.
Likely Case
Remote code execution leading to system takeover, data theft, and lateral movement within the network.
If Mitigated
Limited impact if proper network segmentation, application whitelisting, and deserialization controls are implemented.
🎯 Exploit Status
Public exploit code is available on Exploit-DB and GitHub, making exploitation trivial for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown - No official patch documented
Vendor Advisory: No vendor advisory found
Restart Required: No
Instructions:
1. Upgrade to a newer version if available from vendor. 2. If no patch exists, implement workarounds and consider replacing the software.
🔧 Temporary Workarounds
Network Segmentation
allIsolate ERS Data System from internet and restrict network access to trusted sources only.
Java Security Manager Configuration
allConfigure Java Security Manager to restrict deserialization operations and limit permissions.
java -Djava.security.manager -Djava.security.policy=restrictive.policy -jar ecers.jar
🧯 If You Can't Patch
- Implement strict network access controls and firewall rules to limit exposure
- Deploy runtime application self-protection (RASP) or web application firewall (WAF) with deserialization protection
🔍 How to Verify
Check if Vulnerable:
Check application version in interface or configuration files. If version is 1.8.1.0, assume vulnerable.Check Version:
Check application.properties or version.txt files in installation directoryVerify Fix Applied:
Verify version has been upgraded from 1.8.1.0 or workarounds have been implemented.📡 Detection & Monitoring
Log Indicators:
- Unusual deserialization errors
- Unexpected network connections from ERS process
- Suspicious Java class loading
Network Indicators:
- Malformed serialized objects sent to ERS update endpoints
- Unexpected outbound connections post-exploitation
SIEM Query:
source="ERS_Logs" AND ("deserialization" OR "UpdateRequest" OR "ClassNotFoundException")