CVE-2024-50319
📋 TL;DR
CVE-2024-50319 is an infinite loop vulnerability in Ivanti Avalanche that allows remote unauthenticated attackers to cause denial of service by crashing the service. This affects all Ivanti Avalanche installations before version 6.4.6. Organizations using vulnerable versions of this enterprise mobility management platform are at risk.
💻 Affected Systems
- Ivanti Avalanche
📦 What is this software?
Avalanche by Ivanti
⚠️ Risk & Real-World Impact
Worst Case
Complete service outage of Ivanti Avalanche, disrupting all mobile device management capabilities including configuration, deployment, and security management for enterprise mobile fleets.
Likely Case
Service disruption requiring manual restart of Avalanche services, causing temporary loss of mobile device management capabilities.
If Mitigated
Minimal impact with proper network segmentation and monitoring allowing quick detection and service restoration.
🎯 Exploit Status
The advisory confirms remote unauthenticated exploitation is possible. While no public PoC exists, the vulnerability type suggests straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.4.6
Vendor Advisory: https://forums.ivanti.com/s/article/Security-Advisory-Ivanti-Avalanche-Multiple-CVEs-Q4-2024-Release
Restart Required: Yes
Instructions:
1. Download Ivanti Avalanche 6.4.6 from the Ivanti portal. 2. Backup current configuration and database. 3. Run the installer to upgrade to version 6.4.6. 4. Restart the Avalanche service and verify functionality.
🔧 Temporary Workarounds
Network Access Control
allRestrict network access to the Avalanche server to only trusted management networks and required client subnets.
Load Balancer/Proxy Protection
allImplement rate limiting and request filtering at network perimeter devices to block malicious traffic patterns.
🧯 If You Can't Patch
- Implement strict network segmentation to isolate the Avalanche server from untrusted networks
- Deploy monitoring and alerting for Avalanche service health with automated restart procedures
🔍 How to Verify
Check if Vulnerable:
Check the Avalanche version in the web interface under Help > About, or check the installed version in Windows Programs and Features.Check Version:
Not applicable - version check is performed through the Avalanche web interface or Windows control panel.Verify Fix Applied:
Verify version shows 6.4.6 or higher in the Avalanche web interface and test service functionality remains operational.📡 Detection & Monitoring
Log Indicators:
- Avalanche service crash logs
- Unexpected service restarts in Windows Event Logs
- High CPU usage followed by service termination
Network Indicators:
- Unusual traffic patterns to Avalanche ports (typically 1777, 1778)
- Multiple connection attempts from single sources
SIEM Query:
source="windows" AND (EventID=7036 OR EventID=7034) AND ServiceName="Avalanche*"