Summary
Ziroom ZHOME A0101 1.0.1.0 contains a command injection vulnerability in the /api/ZRQos/set_online_client endpoint. An attacker who can send requests to the remotely reachable endpoint may be able to influence operating-system command execution through the ip argument.
Affected context
The vulnerability occurs in the Ziroom ZHOME A0101 1.0.1.0 API, specifically in the handler for /api/ZRQos/set_online_client. Risk arises when the endpoint accepts attacker-controlled input through the ip argument and incorporates that input into an operating-system command without adequate separation, validation, or escaping.
Exploit preconditions
- Attack surface: The remotely accessible
/api/ZRQos/set_online_clientAPI endpoint - Required access: Ability to send requests to the affected service; the available description does not establish whether authentication is required
- Trigger point: Processing of the
ipargument by the endpoint - Why exploitation is possible: User-controlled input may reach command execution logic without sufficient controls to prevent command syntax from being interpreted
Why this happens
The underlying bug is an injection flaw in which externally supplied data is combined with an operating-system command. If the application constructs commands through string concatenation, insufficient escaping, or an unrestricted shell invocation, command syntax can be interpreted as executable instructions rather than treated solely as data. This behavior maps primarily to CWE-77: Command Injection, with CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component describing the broader injection pattern.
Potential impact
- An attacker may execute arbitrary operating-system commands in the service context
- The service process or underlying device could be compromised
- Sensitive configuration or device data could be exposed
- The attacker could alter application behavior or stored data
- A compromised device could be used for further attacks on connected systems
General mitigation guidance
Mitigation generally focuses on ensuring that network-provided values are never interpreted as command syntax.
Common defensive patterns include:
- Avoiding shell execution when a direct library or system API can perform the required operation
- Passing command arguments as structured argument arrays rather than concatenated command strings
- Applying strict allowlist validation for IP-address input using a dedicated parser
- Separating validation from execution and rejecting unexpected formats before any system interaction
- Running the service with the minimum operating-system privileges and restricting its filesystem and network access
- Reducing trust in client-supplied network parameters by deriving values from trusted application state where practical
- Enforcing authentication, authorization, and network policy controls around administrative API endpoints
How teams detect issues like this
Detection can combine source review, runtime monitoring, and policy enforcement:
- Use static analysis rules to identify shell invocation, command construction, and string concatenation involving request parameters
- Review API handlers for direct or indirect flows from
ipor other request fields into process execution functions - Flag shell-enabled subprocess calls and command interpreters in security-focused code review
- Monitor endpoint requests and process activity for unusual command execution, unexpected child processes, or shell metacharacter patterns
- Enforce API schemas and input-validation policies at service boundaries
- Use automated code review and software composition analysis tools as supplemental controls for injection-risk patterns
