CVE-2020-7172
📋 TL;DR
CVE-2020-7172 is a critical template expression language injection vulnerability in HPE Intelligent Management Center (iMC) that allows remote attackers to execute arbitrary code. This affects iMC PLAT versions prior to 7.3 (E0705P07). Attackers can exploit this without authentication to gain complete control of affected systems.
💻 Affected Systems
- HPE Intelligent Management Center (iMC)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining root/administrator privileges, deploying ransomware, stealing sensitive data, and using the system as a pivot point for lateral movement.
Likely Case
Remote code execution leading to data exfiltration, installation of backdoors, or deployment of cryptocurrency miners on vulnerable iMC servers.
If Mitigated
Limited impact if proper network segmentation, web application firewalls, and intrusion detection systems are in place to block exploitation attempts.
🎯 Exploit Status
Exploitation is straightforward with publicly available proof-of-concept code. The vulnerability is in the template selection mechanism that processes user input without proper sanitization.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: iMC PLAT 7.3 (E0705P07) or later
Vendor Advisory: https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbnw04036en_us
Restart Required: Yes
Instructions:
1. Download the patch from HPE Support Center. 2. Backup your iMC configuration and database. 3. Apply the patch following HPE's installation guide. 4. Restart the iMC services. 5. Verify the patch was successfully applied.
🔧 Temporary Workarounds
Network Access Restriction
linuxRestrict network access to iMC management interface to only trusted IP addresses
Use firewall rules to limit access: iptables -A INPUT -p tcp --dport [iMC-port] -s [trusted-IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [iMC-port] -j DROP
Web Application Firewall
allDeploy a WAF with rules to detect and block template injection attempts
🧯 If You Can't Patch
- Isolate the iMC server in a separate network segment with strict access controls
- Implement network-based intrusion detection/prevention systems to monitor for exploitation attempts
🔍 How to Verify
Check if Vulnerable:
Check iMC version via web interface or command line: On Windows: Check iMC installation directory version files. On Linux: Check /opt/iMC/version or similar.Check Version:
On Windows: type "%IMC_HOME%\version.txt" or check iMC web interface. On Linux: cat /opt/iMC/version.txtVerify Fix Applied:
Verify version is 7.3 (E0705P07) or later and test template functionality to ensure no code execution occurs.📡 Detection & Monitoring
Log Indicators:
- Unusual template processing requests
- Suspicious Java class loading in iMC logs
- Unexpected system command execution
Network Indicators:
- HTTP requests containing template expression payloads to iMC endpoints
- Outbound connections from iMC server to unknown destinations
SIEM Query:
source="iMC-logs" AND ("template" OR "expression") AND ("exec" OR "Runtime.getRuntime" OR "ProcessBuilder")