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Security audit

DNS Doctor

Security checks for vulnerabilities and agentic risk

Overview

This is a disclosed DNS troubleshooting skill that sends requested DNS data to DNS Doctor and does not modify DNS or local files, though scans create public reports.

Install this only if you are comfortable sending the domains and DNS records you ask about to dnsdoctor.dev. Do not scan domains you need to keep private because the skill says scan results are public report pages. Use the optional DNSDOCTOR_API_TOKEN only through your environment, and be aware that x402-capable clients may encounter disclosed per-call payments after free limits.

A.I.G

Vulnerability Patterns
  • Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
  • Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
  • Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

SkillSpector

Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
  • Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep
Findings (2)

External Transmission

Medium
Category
Data Exfiltration
Content
caller; past the limit an x402-capable agent can pay per call (USDC on Base),
  no account needed.
license: Apache-2.0
compatibility: Requires curl and outbound HTTPS to dnsdoctor.dev.
metadata:
  {
    "homepage": "https://dnsdoctor.dev/methodology",
Confidence
60% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

External Transmission

Medium
Category
Data Exfiltration
Content
```bash
# Did the change land? (kind: spf|dmarc|txt|mx|cname|a|aaaa)
curl -s -X POST https://dnsdoctor.dev/api/tools/check-record \
  -H 'Content-Type: application/json' -d '{"domain": "example.com", "kind": "dmarc"}'

# Forward-confirmed reverse DNS for one sending IP:
Confidence
60% confidence
Finding
Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.

Static analysis

No suspicious patterns detected.