Horizon Alert
Summary of the vulnerability and why it matters
Ubiquiti devices running AirOS are affected by a command injection vulnerability. This flaw exists when an attacker sends a GET request to a specific script on the device. The input is not properly checked, allowing malicious commands to be executed. This could potentially lead to unauthorized access or control of the affected devices.
- Ubiquiti AirOS devices
- Unsanitized input in CGI script
- Unauthorized access and control
Attack Path
How an attacker could exploit the issue
This vulnerability allows for command injection on affected Ubiquiti devices. An attacker can exploit this by sending a specially crafted GET request to the `stainfo.cgi` script. This script does not properly sanitize the `ifname` variable, allowing the attacker to inject shell metacharacters. Successful exploitation could lead to an attacker gaining control over the affected device.
- Web interface is exposed.
- Attacker sends a malicious GET request.
- Command injection results in device control.
Live Threat
Current exploitation, exposure, and threat context
This vulnerability presents a significant risk to organizations utilizing specific Ubiquiti devices running AirOS. Attackers could remotely inject commands, potentially leading to unauthorized access, system compromise, or data manipulation. The severity of this issue, rated as Critical, indicates a high potential for widespread impact. Organizations are advised to prioritize remediation efforts.
- Likely attacker skill level: Low.
- Required access or conditions: Network access.
- Business risk or urgency: High.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
Command injection vulnerabilities have been identified in certain Ubiquiti devices, impacting the integrity and availability of affected systems. These vulnerabilities stem from un-sanitized variable inputs within the stainfo.cgi script, potentially allowing unauthorized command execution through specially crafted GET requests. The potential for attackers to gain elevated privileges or execute arbitrary commands poses a significant risk to organizational data and network operations.
- Find affected Ubiquiti devices.
- Isolate vulnerable devices from the network.
- Apply vendor firmware updates and validate.
- Monitor for anomalous network activity.
