CVE-2023-21411
📋 TL;DR
CVE-2023-21411 is an OS command injection vulnerability in Axis camera access control settings that allows authenticated attackers to execute arbitrary commands with system privileges. This affects Axis camera administrators who can access the web configuration interface. Successful exploitation could lead to complete system compromise.
💻 Affected Systems
- Axis network cameras with access control feature
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise allowing attacker to install persistent backdoors, pivot to internal networks, exfiltrate sensitive data, or disable security systems.
Likely Case
Unauthorized access to camera feeds, modification of security settings, installation of malware, or use of device as pivot point for lateral movement.
If Mitigated
Limited impact if network segmentation, strong authentication, and input validation are properly implemented.
🎯 Exploit Status
Exploitation requires authenticated access to the web interface. Attack complexity is low once authentication is bypassed or obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check Axis security advisory for specific patched firmware versions
Vendor Advisory: https://www.axis.com/dam/public/0b/1c/96/cve-2023-2140712-en-US-409778.pdf
Restart Required: Yes
Instructions:
1. Download latest firmware from Axis support portal. 2. Backup current configuration. 3. Upload firmware via web interface. 4. Apply update. 5. Reboot device. 6. Restore configuration if needed.
🔧 Temporary Workarounds
Disable Access Control Feature
allTemporarily disable the vulnerable access control feature until patching can be completed
Access web interface > Settings > Access Control > Disable
Restrict Web Interface Access
allLimit access to management interface to trusted IP addresses only
Configure firewall rules to restrict access to camera management ports (typically 80, 443)
🧯 If You Can't Patch
- Implement strict network segmentation to isolate cameras from critical networks
- Enforce strong authentication policies and consider multi-factor authentication for management interfaces
🔍 How to Verify
Check if Vulnerable:
Check firmware version against Axis advisory. Test if command injection is possible in Access Control settings (only in authorized testing environments).Check Version:
Access web interface > System Options > Support > System Overview to view firmware versionVerify Fix Applied:
Verify firmware version matches patched version from advisory. Test that input sanitization prevents command injection in Access Control fields.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed authentication attempts followed by configuration changes
- Unexpected processes running on camera
Network Indicators:
- Unusual outbound connections from camera to external IPs
- Traffic patterns inconsistent with normal camera operation
SIEM Query:
source="axis_camera" AND (event_type="config_change" OR process_execution="unusual")