Summary
A command injection vulnerability in affected Kiloview E3 NDI encoder firmware allows an authenticated web user to influence a hostname value that is passed unsafely to a shell command.
Under conditions where the vulnerable device-naming endpoint is reachable and the user has access to it, an attacker may execute operating system commands with root privileges and fully compromise the device.
A command injection vulnerability in affected Kiloview E3 NDI encoder firmware allows an authenticated web user to influence a hostname value that is passed unsafely to a shell command.
Under conditions where the vulnerable device-naming endpoint is reachable and the user has access to it, an attacker may execute operating system commands with root privileges and fully compromise the device.
Affected context
The vulnerability occurs in the system control service of affected Kiloview E3 NDI encoder firmware. It requires the device-naming endpoint to be enabled and reachable by a web user who has authenticated access to that function. Risk is increased when the device exposes the management interface beyond a trusted administrative network or when authenticated accounts have unnecessarily broad privileges.
The vulnerability occurs in the system control service of affected Kiloview E3 NDI encoder firmware. It requires the device-naming endpoint to be enabled and reachable by a web user who has authenticated access to that function. Risk is increased when the device exposes the management interface beyond a trusted administrative network or when authenticated accounts have unnecessarily broad privileges.
Exploit preconditions
- Attack surface: Authenticated web management endpoint used for device naming
- Required access: Valid credentials and authorization to access the naming function
- Trigger point: Processing of the hostname parameter by the system control service
- Why exploitation is possible: The parameter is passed unquoted into a shell command without adequate sanitization, allowing command syntax to alter the intended command execution
- Attack surface: Authenticated web management endpoint used for device naming
- Required access: Valid credentials and authorization to access the naming function
- Trigger point: Processing of the hostname parameter by the system control service
- Why exploitation is possible: The parameter is passed unquoted into a shell command without adequate sanitization, allowing command syntax to alter the intended command execution
Why this happens
The underlying bug is improper neutralization of special elements in an operating system command. A user-controlled hostname is incorporated into a shell command without strict validation, quoting, or avoidance of shell interpretation.
This maps to CWE-78: Improper Neutralization of Special Elements used in an OS Command, commonly known as OS command injection. The insecure pattern occurs when application data is combined with a shell command instead of being handled through a safe process-execution interface with fixed arguments.
The underlying bug is improper neutralization of special elements in an operating system command. A user-controlled hostname is incorporated into a shell command without strict validation, quoting, or avoidance of shell interpretation.
This maps to CWE-78: Improper Neutralization of Special Elements used in an OS Command, commonly known as OS command injection. The insecure pattern occurs when application data is combined with a shell command instead of being handled through a safe process-execution interface with fixed arguments.
Potential impact
- An attacker may execute arbitrary operating system commands
- Device services and configuration could be modified or disabled
- Sensitive device data or credentials could be exposed
- The encoder may be used to access or attack connected network resources
- Full device compromise could enable persistence, disruption, or unauthorized media operations
- An attacker may execute arbitrary operating system commands
- Device services and configuration could be modified or disabled
- Sensitive device data or credentials could be exposed
- The encoder may be used to access or attack connected network resources
- Full device compromise could enable persistence, disruption, or unauthorized media operations
General mitigation guidance
Mitigation generally focuses on eliminating shell interpretation and reducing the trust placed in management inputs.
Defensive patterns include:
- Replacing shell-based command construction with direct process APIs and fixed argument arrays
- Applying strict allowlist validation for hostnames based on the intended naming format
- Treating all web-provided values as untrusted, including values submitted by authenticated users
- Separating naming functionality from privileged system operations
- Running management services with the least privileges necessary and limiting root-level execution
- Restricting administrative interfaces to trusted networks and using strong account protections
Mitigation generally focuses on eliminating shell interpretation and reducing the trust placed in management inputs.
Defensive patterns include:
- Replacing shell-based command construction with direct process APIs and fixed argument arrays
- Applying strict allowlist validation for hostnames based on the intended naming format
- Treating all web-provided values as untrusted, including values submitted by authenticated users
- Separating naming functionality from privileged system operations
- Running management services with the least privileges necessary and limiting root-level execution
- Restricting administrative interfaces to trusted networks and using strong account protections
How teams detect issues like this
Detection can include static analysis for shell invocation APIs, string concatenation involving request parameters, and subprocess calls that pass user-controlled values through a command interpreter.
Code review should look for hostname, device-name, or other form fields reaching system-control functions without allowlist validation or argument separation. Runtime monitoring can alert on unexpected child processes, shell launches, command execution by management services, and changes to device configuration. Policy enforcement may require authenticated management endpoints to prohibit shell commands unless explicitly reviewed. Automated security scanning and code-review tools can help identify these patterns.
Detection can include static analysis for shell invocation APIs, string concatenation involving request parameters, and subprocess calls that pass user-controlled values through a command interpreter.
Code review should look for hostname, device-name, or other form fields reaching system-control functions without allowlist validation or argument separation. Runtime monitoring can alert on unexpected child processes, shell launches, command execution by management services, and changes to device configuration. Policy enforcement may require authenticated management endpoints to prohibit shell commands unless explicitly reviewed. Automated security scanning and code-review tools can help identify these patterns.
