Download file content from a remote host via SSH as base64.
AI agents call ssh_session_download_content to retrieve information from Zebbern Kali MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs data retrieval (Read category) with no side effects on the target system. However, the severity is high rather than low because: (1) it operates on remote systems via SSH, (2) when combined with other tools in the Kali toolkit (ad_psexec, ad_wmiexec, ad_secretsdump), it could exfiltrate sensitive data or credentials from compromised hosts, and (3) in a penetration testing context, unauthorized…
From the tool's definition Tool description states it 'Download file content from a remote host via SSH as base64' — this retrieves data from a remote system with no modification or deletion.
Documented attack patterns abuse exactly the kind of access ssh_session_download_content gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Zebbern Kali MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for ssh_session_download_content:
{
"version": "1",
"default": "deny",
"tools": {
"ssh_session_download_content": {}
}
}ssh_session_download_content is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Download file content from a remote host via SSH as base64. It is categorised as a Read tool in the Zebbern Kali MCP MCP Server, which means it retrieves data without modifying state.
Register the Zebbern Kali MCP server in PolicyLayer and add a rule for ssh_session_download_content: 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 Zebbern Kali MCP. Nothing to install.
ssh_session_download_content 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 ssh_session_download_content 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 ssh_session_download_content. 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.
ssh_session_download_content is provided by the Zebbern Kali MCP server (zebbern/zebbern-kali-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 128 Zebbern Kali MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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128 Zebbern Kali MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.