Horizon Alert
Summary of the vulnerability and why it matters
This vulnerability affects Sierra Wireless AirLink devices. The flaw allows an attacker with authentication to upload executable code to the web server. Such an attack could compromise device integrity and enable unauthorized access to the network.
- Vulnerable upload functionality
- Unrestricted file upload
- Unauthorized code execution
Attack Path
How an attacker could exploit the issue
A vulnerability in the upload functionality allows for code execution. An authenticated attacker can exploit this by sending a malicious HTTP request that uploads an executable file to the webserver. This can lead to unauthorized control over the affected system.
- Vulnerable upload functionality exposed.
- Authenticated attacker sends crafted request.
- Executable code uploaded, resulting in control.
Live Threat
Current exploitation, exposure, and threat context
A vulnerability in Sierra Wireless AirLink devices could allow an attacker to upload and execute malicious code. This could lead to unauthorized control of the affected device and potential compromise of the network it serves. Given that this vulnerability is listed on the CISA Known Exploited Vulnerabilities catalog, organizations should treat it with a high degree of urgency.
- Likely attacker skill level: Authenticated user.
- Required access or conditions: Authenticated HTTP request.
- Business risk or urgency: High, urgent action required.
Priority actions
Operational Fix
Recommended remediation, mitigation, and detection steps
An exploitable remote code execution vulnerability exists in specific Sierra Wireless AirLink devices. This vulnerability allows an authenticated attacker to upload a file, potentially leading to the execution of malicious code on the affected webserver. This could pose a significant risk to organizational systems and data by enabling unauthorized access and control.
- Identify exposed Sierra Wireless AirLink assets.
- Isolate affected devices or restrict network access.
- Apply vendor fixes, verify, and monitor.
