Get DNS listener details
AI agents call get_listener_dns to retrieve information from Cobalt Strike MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves information about DNS listener configuration in a Cobalt Strike red team framework. While it is a read-only operation, severity is elevated to 'high' because: (1) the server context is Cobalt Strike, a sophisticated command-and-control platform used in adversarial operations; (2) DNS listener details could reveal active C2 infrastructure, operational tactics, or enable coordination of attacks;…
From the tool's definition Tool name 'get_listener_dns' with description 'Get DNS listener details' performs a retrieval operation with no side effects. The verb 'Get' and context of querying listener configuration data align with the Read category.
Attacks that exploit this kind of access
Get DNS listener details. It is categorised as a Read tool in the Cobalt Strike MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Cobalt Strike MCP Server MCP server in PolicyLayer and add a rule for get_listener_dns: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Cobalt Strike MCP Server. Nothing to install.
get_listener_dns is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the get_listener_dns rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for get_listener_dns. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
get_listener_dns is provided by the Cobalt Strike MCP Server MCP server (mickeydb/cobalt-strike-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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