Summary
A critical OS command injection vulnerability in the Kiloview E3 NDI encoder's network management service allows an authenticated web user with network-configuration privileges to execute arbitrary operating system commands.
The risk arises when an attacker-controlled network interface name reaches a shell command without the validation applied by related request handlers, potentially enabling root-level compromise.
A critical OS command injection vulnerability in the Kiloview E3 NDI encoder's network management service allows an authenticated web user with network-configuration privileges to execute arbitrary operating system commands.
The risk arises when an attacker-controlled network interface name reaches a shell command without the validation applied by related request handlers, potentially enabling root-level compromise.
Affected context
The vulnerability occurs in the link maintenance address configuration endpoint of affected Kiloview E3 NDI encoder firmware. It requires a deployment where the network management service exposes this endpoint to an authenticated web user who is authorized to configure network settings, and where the supplied interface name is passed to a shell command without equivalent validation.
The vulnerability occurs in the link maintenance address configuration endpoint of affected Kiloview E3 NDI encoder firmware. It requires a deployment where the network management service exposes this endpoint to an authenticated web user who is authorized to configure network settings, and where the supplied interface name is passed to a shell command without equivalent validation.
Exploit preconditions
- Attack surface: The web-accessible network management service and its link maintenance address configuration endpoint
- Required access: An authenticated account with permission to configure network settings
- Trigger point: Processing the network interface name supplied to the address configuration operation
- Why exploitation is possible: The interface name is not adequately validated before being incorporated into a shell command, allowing command syntax to alter the intended operation
- Execution context: The affected service performs the operation with root privileges
- Attack surface: The web-accessible network management service and its link maintenance address configuration endpoint
- Required access: An authenticated account with permission to configure network settings
- Trigger point: Processing the network interface name supplied to the address configuration operation
- Why exploitation is possible: The interface name is not adequately validated before being incorporated into a shell command, allowing command syntax to alter the intended operation
- Execution context: The affected service performs the operation with root privileges
Why this happens
The underlying bug is an OS command injection caused by passing insufficiently validated input into a shell command. The network interface name is treated as a trusted value even though it can be influenced by a privileged web request, and the endpoint does not apply the same validation performed by sibling handlers.
This maps to CWE-78: Improper Neutralization of Special Elements used in an OS Command, where externally influenced data changes the meaning of a command interpreted by the operating system.
The underlying bug is an OS command injection caused by passing insufficiently validated input into a shell command. The network interface name is treated as a trusted value even though it can be influenced by a privileged web request, and the endpoint does not apply the same validation performed by sibling handlers.
This maps to CWE-78: Improper Neutralization of Special Elements used in an OS Command, where externally influenced data changes the meaning of a command interpreted by the operating system.
Potential impact
- An attacker may execute arbitrary operating system commands
- The device could be fully compromised with root privileges
- Configuration, credentials, logs, or stored data could be accessed or modified
- Network traffic could be disrupted or redirected
- The compromised device could be used for lateral movement or further attacks
- An attacker may execute arbitrary operating system commands
- The device could be fully compromised with root privileges
- Configuration, credentials, logs, or stored data could be accessed or modified
- Network traffic could be disrupted or redirected
- The compromised device could be used for lateral movement or further attacks
General mitigation guidance
Mitigation generally focuses on preventing user-controlled values from reaching shell interpreters and keeping privileged operations narrowly constrained.
Common defensive patterns include:
- Avoiding shell invocation when a direct system API or argument-based process interface is available
- Enforcing strict allowlists for network interface names and validating them consistently across all related handlers
- Separating validation from command construction and rejecting unexpected characters, formats, and values
- Applying least privilege to the network management service and isolating privileged operations behind narrowly scoped helpers
- Restricting network-management access to trusted administrative interfaces and reducing unnecessary account privileges
- Using secure-by-default service configurations that do not expose administrative endpoints broadly
Mitigation generally focuses on preventing user-controlled values from reaching shell interpreters and keeping privileged operations narrowly constrained.
Common defensive patterns include:
- Avoiding shell invocation when a direct system API or argument-based process interface is available
- Enforcing strict allowlists for network interface names and validating them consistently across all related handlers
- Separating validation from command construction and rejecting unexpected characters, formats, and values
- Applying least privilege to the network management service and isolating privileged operations behind narrowly scoped helpers
- Restricting network-management access to trusted administrative interfaces and reducing unnecessary account privileges
- Using secure-by-default service configurations that do not expose administrative endpoints broadly
How teams detect issues like this
Organizations can look for command injection risks through:
- Static analysis rules that identify shell execution APIs receiving request-derived values
- Code review checks for string concatenation or interpolation in commands
- Comparisons between sibling handlers to identify inconsistent validation of equivalent parameters
- Runtime monitoring for unexpected child processes, command interpreters, or unusual root-level process activity
- Web and audit-log review for anomalous network configuration requests
- Policy enforcement requiring allowlisted identifiers and non-shell process execution for administrative services
Automated security review tools may help identify unsafe command construction and missing input validation during development.
Organizations can look for command injection risks through:
- Static analysis rules that identify shell execution APIs receiving request-derived values
- Code review checks for string concatenation or interpolation in commands
- Comparisons between sibling handlers to identify inconsistent validation of equivalent parameters
- Runtime monitoring for unexpected child processes, command interpreters, or unusual root-level process activity
- Web and audit-log review for anomalous network configuration requests
- Policy enforcement requiring allowlisted identifiers and non-shell process execution for administrative services
Automated security review tools may help identify unsafe command construction and missing input validation during development.
