CVE-2024-49368
📋 TL;DR
CVE-2024-49368 is a critical command injection vulnerability in Nginx UI that allows attackers to execute arbitrary commands on the server. This affects all Nginx UI installations prior to version 2.0.0-beta.36 where logrotate configuration is used. Attackers can gain complete control of affected systems.
💻 Affected Systems
- Nginx UI
📦 What is this software?
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
Nginx Ui by Nginxui
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with root-level access, data exfiltration, lateral movement, and persistent backdoor installation.
Likely Case
Remote code execution leading to web server compromise, data theft, and potential ransomware deployment.
If Mitigated
Limited impact with proper network segmentation, minimal privileges, and monitoring in place.
🎯 Exploit Status
Exploitation requires access to the logrotate configuration interface, which typically requires authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.0-beta.36
Vendor Advisory: https://github.com/0xJacky/nginx-ui/security/advisories/GHSA-66m6-27r9-77vm
Restart Required: Yes
Instructions:
1. Backup current configuration. 2. Stop Nginx UI service. 3. Update to version 2.0.0-beta.36 or later. 4. Restart Nginx UI service. 5. Verify the update was successful.
🔧 Temporary Workarounds
Disable logrotate configuration
linuxPrevent exploitation by disabling logrotate configuration functionality in Nginx UI
# Edit Nginx UI configuration to disable logrotate features
# Check documentation for specific configuration options
Network isolation
linuxRestrict access to Nginx UI administration interface
iptables -A INPUT -p tcp --dport [NGINX_UI_PORT] -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport [NGINX_UI_PORT] -j DROP
🧯 If You Can't Patch
- Implement strict network access controls to limit who can access the Nginx UI interface
- Monitor system logs for suspicious command execution attempts and implement intrusion detection
🔍 How to Verify
Check if Vulnerable:
Check Nginx UI version: if version is earlier than 2.0.0-beta.36 and logrotate configuration is enabled, the system is vulnerable.Check Version:
nginx-ui --version or check the web interface version informationVerify Fix Applied:
Verify Nginx UI version is 2.0.0-beta.36 or later and test logrotate configuration functionality.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Suspicious processes spawned from Nginx UI
- Failed authentication attempts to Nginx UI
Network Indicators:
- Unexpected outbound connections from Nginx UI server
- Traffic to suspicious IPs/domains
SIEM Query:
source="nginx-ui" AND (event="command_execution" OR event="logrotate_config")