CVE-2022-28719
📋 TL;DR
CVE-2022-28719 is a critical authentication bypass vulnerability in AssetView management software that allows unauthenticated remote attackers to upload malicious configuration files. This can lead to remote code execution with administrative privileges on managed client systems. Organizations using AssetView versions before 13.2.0 are affected.
💻 Affected Systems
- AssetView
📦 What is this software?
Assetview by Hammock
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all managed client systems with administrative privileges, enabling data theft, ransomware deployment, or persistent backdoor installation across the entire managed environment.
Likely Case
Attacker gains administrative control over managed clients, potentially leading to data exfiltration, lateral movement within the network, or deployment of malware.
If Mitigated
If proper network segmentation and access controls are in place, impact may be limited to isolated management segments, though compromised clients could still be used for further attacks.
🎯 Exploit Status
Exploitation requires some knowledge of the system configuration but no authentication. The attack vector is straightforward once the attacker understands the configuration structure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 13.2.0
Vendor Advisory: https://www.hammock.jp/assetview/info/220422.html
Restart Required: Yes
Instructions:
1. Download AssetView version 13.2.0 or later from the vendor website. 2. Backup current configuration and data. 3. Stop AssetView services. 4. Install the updated version. 5. Restart services and verify functionality.
🔧 Temporary Workarounds
Network Segmentation
allIsolate AssetView management server from untrusted networks and restrict access to authorized IP addresses only.
Firewall Rules
allImplement strict firewall rules to block external access to AssetView management ports (default ports vary by installation).
🧯 If You Can't Patch
- Implement strict network access controls to limit who can reach the AssetView management server
- Monitor for unusual configuration file uploads or changes to AssetView server configuration
🔍 How to Verify
Check if Vulnerable:
Check AssetView version in administration console or configuration files. Versions below 13.2.0 are vulnerable.Check Version:
Check AssetView administration interface or configuration files for version information (specific command varies by installation)Verify Fix Applied:
Verify AssetView version is 13.2.0 or higher and test that unauthenticated configuration uploads are properly rejected.📡 Detection & Monitoring
Log Indicators:
- Unauthenticated configuration upload attempts
- Unexpected configuration file changes
- Unusual administrative activity from non-standard sources
Network Indicators:
- Unusual traffic to AssetView management ports from unauthorized sources
- Configuration file uploads from unexpected IP addresses
SIEM Query:
source="AssetView" AND (event_type="config_upload" AND user="anonymous") OR (version < "13.2.0")