Medium Risk

rename_function_by_address

Rename a function by its memory address

Risk signalsModifies binary analysis metadata

Part of the Ghidra server.

rename_function_by_address can modify Ghidra data, with no limits today. PolicyLayer puts allow, deny, and rate-limit rules on every call. Live in minutes.

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AI agents use rename_function_by_address to create or modify resources in Ghidra. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

Without a policy, an AI agent could call rename_function_by_address repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Ghidra.

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "rename_function_by_address": {
      "limits": [
        {
          "counter": "rename_function_by_address_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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These attack patterns abuse exactly the kind of access rename_function_by_address gives an agent. Each links to the full case and the policy that stops it:

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Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so rename_function_by_address only ever does what you allow.

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Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.

What does the rename_function_by_address tool do? +

Rename a function by its memory address. It is categorised as a Write tool in the Ghidra MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on rename_function_by_address? +

Register the Ghidra MCP server in PolicyLayer and add a rule for rename_function_by_address: 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 Ghidra. Nothing to install.

What risk level is rename_function_by_address? +

rename_function_by_address is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit rename_function_by_address? +

Yes. Add a rate_limit block to the rename_function_by_address 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.

How do I block rename_function_by_address completely? +

Set action: deny in the PolicyLayer policy for rename_function_by_address. 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.

What MCP server provides rename_function_by_address? +

rename_function_by_address is provided by the Ghidra MCP server (@LaurieWired/GhidraMCP). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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