CVE-2019-14480
📋 TL;DR
CVE-2019-14480 is an improper session handling vulnerability in AdRem NetCrunch's web client that allows attackers to bypass authentication or escalate privileges without valid credentials. This affects organizations using NetCrunch 10.6.0.4587 for network monitoring and management. The vulnerability enables unauthorized access to sensitive network monitoring data and administrative functions.
💻 Affected Systems
- AdRem NetCrunch
📦 What is this software?
Netcrunch by Adremsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the NetCrunch system allowing attackers to gain administrative privileges, manipulate network monitoring data, disable alerts, and potentially pivot to other network systems.
Likely Case
Unauthorized access to sensitive network monitoring information, modification of alert configurations, and potential data exfiltration from monitored systems.
If Mitigated
Limited impact with proper network segmentation and access controls preventing external access to the NetCrunch web interface.
🎯 Exploit Status
The vulnerability is well-documented in public advisories with technical details that make exploitation straightforward. No authentication is required to exploit.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Update to version 10.6.0.4588 or later
Vendor Advisory: https://www.adremsoft.com/support/
Restart Required: Yes
Instructions:
1. Download the latest NetCrunch update from AdRemSoft support portal. 2. Backup current configuration. 3. Apply the update package. 4. Restart NetCrunch services. 5. Verify web client functionality.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict network access to the NetCrunch web interface to only trusted administrative networks
# Example firewall rule (adjust IP ranges):
iptables -A INPUT -p tcp --dport 80,443 -s 10.0.0.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80,443 -j DROP
Web Interface Disablement
allTemporarily disable the web interface and use only the desktop client for administration
# Stop web service:
net stop NetCrunchWeb
# Or on Linux:
systemctl stop netcrunch-web
🧯 If You Can't Patch
- Implement strict network segmentation to isolate NetCrunch server from untrusted networks
- Enable detailed logging and monitoring for unauthorized access attempts to the web interface
🔍 How to Verify
Check if Vulnerable:
Check NetCrunch version via web interface or configuration files. Version 10.6.0.4587 is vulnerable.Check Version:
Check web interface footer or run: netcrunch --version (Windows) or /opt/netcrunch/bin/netcrunch --version (Linux)Verify Fix Applied:
Verify version is 10.6.0.4588 or later and test authentication bypass attempts fail.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful administrative actions
- Session ID manipulation patterns in web logs
- Unauthorized user accessing administrative endpoints
Network Indicators:
- Unusual HTTP requests to session management endpoints
- Traffic to NetCrunch web interface from unexpected sources
SIEM Query:
source="netcrunch.log" AND (event="AUTH_FAILURE" OR event="SESSION_CREATE") | stats count by src_ip, user🔗 References
- https://compass-security.com/fileadmin/Research/Advisories/2020-14_CSNC-2019-015_AdRem_NetCrunch_Improper_Session_Handling.txt
- https://www.adremsoft.com/support/
- https://compass-security.com/fileadmin/Research/Advisories/2020-14_CSNC-2019-015_AdRem_NetCrunch_Improper_Session_Handling.txt
- https://www.adremsoft.com/support/
