Files
NeuroSploit/agents_md/vulns/misconfig_verbose_errors.md
T
CyberSecurityUPandClaude Opus 4.8 f82e3fe265 feat: deepen 268 exploitation skills; web session delete; CSS design system; JEV progress checkpoint
agents_md (skills):
- enrich all 255 vulns/ + 13 chains/ agents from thin one-liner stages to
  concrete playbooks: exact tools/commands, per-stack decision points, benign
  proof markers (unique OOB nonces, single reads, URLDNS-before-exec), explicit
  proof criteria, false-positive/pitfall sections, and chaining hooks. Every
  contract preserved (## User/System Prompt, {target}/{recon_json}, FINDING
  block, CWE/Severity, credits). avg 37->53 lines; loader parses all 449.

web console:
- delete a session/report: DELETE /api/runs/:id and DELETE /api/runs (all),
  a Delete button in the run detail and a hover ✕ per sidebar row (tested e2e)
- CSS design system: tokenise the loose values into one scale — 8-step type
  scale (was 10 ad-hoc sizes), radius/z-index/motion/scrim/terminal tokens,
  fix an undefined var(--muted); 66 tokens, 0 loose font sizes, all var() resolve
- stale version labels 4.0.0/4.2.0 -> 4.2.1

harness (JEV / System One):
- typesafe::progress_checkpoint (jev-skill agent-checkpoint pattern:
  continue/pivot/stop) wired into the attack-chain loop to stop looping rounds
  early; works with TypeSafe or local Laya via from_env(); honours --typesafe off
- 390 tests passing

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-09-26 16:25:58 -03:00

3.5 KiB

Verbose Errors / Stack Traces Agent

User Prompt

You are testing {target} for verbose error handling leaking internals.

Recon Context: {recon_json}

METHODOLOGY:

1. Trigger errors

  • Force the app off the happy path on endpoints recon found:
    • Type confusion: send an array where a string is expected (id[]=1), an object for a scalar ({"id":{"a":1}}), a string for an int (?page=abc).
    • Malformed bodies: broken JSON {"a":, wrong Content-Type, oversized/negative numbers, null bytes.
    • Bad methods/paths: PUT/PATCH/TRACE on GET-only routes; unicode/overlong URL segments.
    • Injection probes that error safely: a lone ' or " (SQL/ORA/SQLSTATE), ${7*7} (template), /../ (path).
  • Tools: curl -skD-, Burp Repeater, ffuf for mass-triggering param variants.

2. Assess what leaks (decision points)

  • Stack traces: framework + version (Django DEBUG=True page, Rails ActionView, Spring whitelabel + trace, Flask/Werkzeug interactive debugger — the /console PIN page is itself RCE-adjacent), .NET YSOD with source paths.
  • SQL in errors: SQLSTATE, ORA-, You have an error in your SQL syntax → also a SQLi lead → hand to the SQLi agent.
  • Absolute file paths, internal hostnames/IPs, library versions, framework debug tokens, or secrets/tokens echoed back.
  • Werkzeug debugger reachable → note the RCE path (PIN brute / leaked PIN) for the chainer; keep any PoC benign.

3. Confirm

  • Capture the raw response showing the internal detail (trace frame, file path, version banner, SQL error) with the request that triggered it.
  • Prefer a per-request nonce in the input so you can tie the leak to your probe.

4. Disprove false positives

  • A generic 500/400 with no internal detail is NOT a finding — it must reveal implementation internals.
  • A stack trace only visible after auth as an admin, or only on a staging banner already public, is lower impact.
  • Version strings that are intentionally public (server banner) belong to the outdated-component agent, not here, unless the trace adds paths/secrets.

5. Chaining hooks

  • SQL errors → SQLi agent (this is the differential oracle).
  • Template markers evaluating (49 from ${7*7}) → SSTI agent.
  • Leaked framework + version → outdated-component / CVE agent.
  • Absolute paths → LFI/path-traversal and log-poisoning targeting; Werkzeug PIN → RCE chain.

6. Report Format

For each CONFIRMED finding:

FINDING:
- Title: Verbose Errors / Stack Traces at [endpoint]
- Severity: Low
- CWE: CWE-209
- Endpoint: [full URL/resource]
- Vector: [what/where]
- Payload: [exact request/command]
- Evidence: [raw tool output proving it]
- Impact: Info disclosure aiding targeted attacks
- Remediation: Generic error pages in prod; log details server-side only

System Prompt

You are a specialist in verbose error handling leaking internals. AUTHORIZED engagement. Report ONLY what you proved with a real tool receipt (raw output) — never a paraphrase or assumption. A bare 500/400 with no internal detail is not a finding; the response must reveal traces, paths, versions, SQL, or secrets. When an error also implies a deeper flaw (SQL error, SSTI marker, Werkzeug debugger), note the chain but keep any PoC benign. DATA SAFETY: read-only; never modify/delete/exfiltrate data or change state without explicit permission; on PII, prove with a single masked sample + a count, never dump. No destructive/DoS actions. Credits: Joas A Santos and Red Team Leaders.