CVE-2023-32560
📋 TL;DR
This vulnerability in Wavelink Avalanche Manager allows an attacker to send a specially crafted message, potentially leading to service disruption or arbitrary code execution. It affects systems running vulnerable versions of the software, particularly those exposed to network traffic. The high CVSS score indicates severe risk.
💻 Affected Systems
- Wavelink Avalanche Manager
- Ivanti Avalanche MDM
📦 What is this software?
Avalanche by Ivanti
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, enabling data theft, lateral movement, or persistent access.
Likely Case
Service disruption or denial of service, impacting mobile device management operations.
If Mitigated
Limited impact if network segmentation and access controls restrict attacker access, but risk remains if unpatched.
🎯 Exploit Status
Public proof-of-concept code is available, and the vulnerability involves a buffer overflow (CWE-787), making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.4.1
Vendor Advisory: https://forums.ivanti.com/s/article/Avalanche-Vulnerabilities-Addressed-in-6-4-1?language=en_US
Restart Required: Yes
Instructions:
1. Download version 6.4.1 from the official Ivanti portal. 2. Backup configuration and data. 3. Install the update following vendor instructions. 4. Restart the Avalanche Manager service.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to the Avalanche Manager to trusted IPs only, reducing exposure.
Use firewall rules to allow only necessary traffic (e.g., from management stations).
🧯 If You Can't Patch
- Implement strict network access controls and monitor for anomalous traffic to the Avalanche Manager port.
- Deploy intrusion detection systems (IDS) to alert on exploit attempts and consider isolating the system.
🔍 How to Verify
Check if Vulnerable:
Check the Avalanche Manager version in the admin interface or via system logs; if below 6.4.1, it is vulnerable.Check Version:
On Windows: Check the application version in Programs and Features. On Linux: Check the installed package version (e.g., rpm -qa | grep avalanche).Verify Fix Applied:
Confirm the version is 6.4.1 or higher in the admin interface and test service functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual network connections or error logs related to buffer overflows in Avalanche Manager logs.
Network Indicators:
- Suspicious traffic patterns or exploit attempts on the Avalanche Manager port (default 1777/TCP).
SIEM Query:
Example: source="avalanche.log" AND (message="buffer overflow" OR message="malformed packet")🔗 References
- http://packetstormsecurity.com/files/174459/Ivanti-Avalance-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/174698/Ivanti-Avalanche-MDM-Buffer-Overflow.html
- https://forums.ivanti.com/s/article/Avalanche-Vulnerabilities-Addressed-in-6-4-1?language=en_US
- http://packetstormsecurity.com/files/174459/Ivanti-Avalance-Remote-Code-Execution.html
- http://packetstormsecurity.com/files/174698/Ivanti-Avalanche-MDM-Buffer-Overflow.html
- https://forums.ivanti.com/s/article/Avalanche-Vulnerabilities-Addressed-in-6-4-1?language=en_US
