CVE-2023-1580
📋 TL;DR
This vulnerability allows attackers to cause denial of service by exploiting uncontrolled resource consumption in Devolutions Gateway's logging feature. Attackers can fill up the disk, rendering the system unusable. Organizations running Devolutions Gateway 2023.1.1 or earlier are affected.
💻 Affected Systems
- Devolutions Gateway
📦 What is this software?
Devolutions Gateway by Devolutions
⚠️ Risk & Real-World Impact
Worst Case
Complete system unavailability due to disk exhaustion, requiring manual intervention to restore service and potentially causing extended downtime.
Likely Case
Service disruption and degraded performance as disk space fills, impacting legitimate users until the attack stops or space is cleared.
If Mitigated
Minimal impact with proper monitoring and disk space management, though some performance degradation may occur during attack attempts.
🎯 Exploit Status
The vulnerability requires no authentication and involves simple resource exhaustion techniques that are easy to implement.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2023.1.2 or later
Vendor Advisory: https://devolutions.net/security/advisories/DEVO-2023-0007
Restart Required: Yes
Instructions:
1. Download Devolutions Gateway 2023.1.2 or later from the official website. 2. Backup current configuration. 3. Stop the Gateway service. 4. Install the updated version. 5. Restart the Gateway service. 6. Verify the update was successful.
🔧 Temporary Workarounds
Implement Log Rotation and Disk Monitoring
allConfigure aggressive log rotation and implement disk space monitoring to detect and prevent disk exhaustion.
# Configure log rotation in Devolutions Gateway settings
# Set up disk monitoring with tools like df, du, or monitoring solutions
Restrict Network Access
linuxLimit access to the Gateway service to trusted networks only to reduce attack surface.
# Configure firewall rules to restrict access
# Example: iptables -A INPUT -p tcp --dport [GATEWAY_PORT] -s [TRUSTED_NETWORK] -j ACCEPT
🧯 If You Can't Patch
- Implement strict disk space monitoring with automated alerts when usage exceeds 80%
- Configure log rotation to keep only minimal logs and implement rate limiting on logging inputs
🔍 How to Verify
Check if Vulnerable:
Check the Devolutions Gateway version in the administration interface or configuration files. If version is 2023.1.1 or earlier, the system is vulnerable.Check Version:
Check the Gateway web interface or configuration files for version information. On Windows: Check installed programs list. On Linux: Check service status or configuration files.Verify Fix Applied:
Verify the Gateway version is 2023.1.2 or later in the administration interface and test logging functionality to ensure it properly manages disk space.📡 Detection & Monitoring
Log Indicators:
- Rapid increase in log file sizes
- Unusual volume of log entries from single sources
- Disk space warnings in system logs
Network Indicators:
- High volume of requests to logging endpoints
- Unusual traffic patterns to Gateway service
SIEM Query:
source="devolutions_gateway" AND (disk_usage > 90% OR log_size_growth_rate > 100MB_per_minute)