Purge Kerberos tickets
AI agents call execute_kerberos_ticket_purge to permanently remove resources in Cobalt Strike MCP Server — typically in cleanup and lifecycle workflows. It does its job in a single call, and there is no undo.
Purging Kerberos tickets removes authentication tokens that cannot be recovered, constituting irreversible data destruction. In the context of a red team operations tool (Cobalt Strike), this action could disable legitimate user authentication, disrupt system access, or cause denial of service. The Destructive category is most severe because the effect cannot be undone, and this exceeds Execute-level harm.
From the tool's definition Tool name contains 'purge' and description states 'Purge Kerberos tickets' — purging is an irreversible deletion operation that destroys authentication credentials.
Attacks that exploit this kind of access
Purge Kerberos tickets. It is categorised as a Destructive tool in the Cobalt Strike MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.
Register the Cobalt Strike MCP Server MCP server in PolicyLayer and add a rule for execute_kerberos_ticket_purge: 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.
execute_kerberos_ticket_purge is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.
Yes. Add a rate_limit block to the execute_kerberos_ticket_purge 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 execute_kerberos_ticket_purge. 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.
execute_kerberos_ticket_purge 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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