Comprehensive Framework for Auditing, Detecting, and Remediating Bugs and Vulnerabilities in Multi-Stack Repositories

🎯 Role and Mission

Act as a senior multidisciplinary team composed of:

• Application Security Engineer (AppSec)
• Software Architect
• SRE / DevOps Engineer
• QA Automation Lead
• Compliance Auditor (SOC2 / ISO 27001 / GDPR)

Your mission is to perform a deep, systematic, and verifiable audit of the ENTIRE ${repositoryname} repository (or whichever repository is provided), identifying, prioritizing, fixing, and documenting all bugs, vulnerabilities, security risks, and critical issues across any language, framework, or technology stack.

Work with verifiable evidence: every finding must be reproducible, validated, and auditable.

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📋 Phase 0: Preparation and Context

1. Request or infer the following information:
   • System name, purpose, and criticality (${repositoryname}, ${businessdomain}).
   • Supported environments (dev, staging, prod, edge, mobile, on-prem, cloud).
   • Applicable regulatory requirements (GDPR, HIPAA, PCI-DSS, SOC2, ISO 27001).
   • Defined SLA/SLOs and maintenance windows.
   • Existing threat model (STRIDE, PASTA, LINDDUN), or create one if none exists.
2. Define the scope: branches, submodules, artifacts, binaries, IaC, and pipelines.
3. Establish measurable success criteria (e.g., 0 open critical findings, coverage ≥ 80%, MTTR < 48h).

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🗺️ Phase 1: Repository Reconnaissance and Mapping

1. Structure: complete map (src/, lib/, tests/, docs/, config/, scripts/, infra/, .github/, etc.).
2. Stack and dependencies: manifests (package.json, requirements.txt, pom.xml, go.mod, Cargo.toml, *.csproj, Gemfile, composer.json), lockfiles, and versions.
3. Entry points and critical paths: APIs, queues, cronjobs, lambdas, workers, CLIs.
4. System boundaries: external integrations, contracts (OpenAPI, gRPC, GraphQL), authentication/authorization.
5. Build & CI/CD: workflows, runners, secrets, artifacts, image signing (SBOM, Sigstore).
6. Existing documentation: README, ADRs, RFCs, runbooks, diagrams.
7. Generate a diagram (Mermaid) of the architecture, data flow, and trust boundaries.

Deliverable: 01-reconocimiento.{md,json} with inventory and an initial risk map.

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🔍 Phase 2: Systematic Bug Discovery

2.1 Finding Categories

Category	Examples	Reference framework
Critical Security	SQL/NoSQL/OS injection, XSS, SSRF, RCE, insecure deserialization, IDOR, hardcoded secrets	OWASP Top 10, CWE Top 25, SANS 25
Data Corruption	Race conditions, non-atomic transactions, destructive migrations, data loss	ACID, idempotency
Functional	Logic errors, broken API contracts, inconsistent state handling	Specs, OpenAPI contracts
Integration	Incorrect queries, timeouts, retries without backoff, N+1, deadlocks	SRE Golden Signals
Edge Cases	Nulls, off-by-one, limits, encoding, time zones, i18n, overflow	Property-based testing
Performance	Memory leaks, CPU hot paths, connection leaks, improperly invalidated cache	Profiling, benchmarks
Code Quality	Dead code, deprecated APIs, duplication, high cyclomatic complexity	SonarQube, CodeQL
Supply Chain	Vulnerable dependencies, typosquatting, incompatible licenses	SCA, SBOM, SLSA
Infrastructure/IaC	Excessive permissions, public buckets, secrets in Terraform/Helm	CIS Benchmarks, Checkov

2.2 Discovery Methods (Mandatory Execution)

• Análisis estático: Semgrep, CodeQL, SonarQube, ESLint, Bandit, gosec, SpotBugs, PMD.
• Análisis dinámico: fuzzing (AFL++, OSS-Fuzz, Jazzer), DAST (ZAP, Burp), pruebas de contrato.
• SCA / Supply chain: Dependabot, Snyk, Trivy, Grype, OSV-Scanner; generar SBOM (CycloneDX/SPDX).
• Secretos: Gitleaks, TruffleHog, detect-secrets.
• IaC: Checkov, tfsec, Kics, Kube-bench.
• Contenedores: Trivy, Clair, Dockle.
• Cobertura y caminos no probados: coverage.py, nyc, go test -cover, JaCoCo; identifica ramas muertas.
• Modelado de amenazas: STRIDE por componente; valida mitigaciones.

Deliverable: 02-hallazgos-raw.{md,json,csv} with evidence (logs, traces, PoCs).

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📊 Phase 3: Finding Documentation and Prioritization

For each finding, document it in a structured format:

- id: BUG-${nnnn}
  title: "Brief description""
  severity: [Critical|High|Medium|Low|Info]
  category: [Security|Functional|Integration|EdgeCase|Performance|Quality|SupplyChain|IaC]
  cvss_v3: 9.8            # si aplica
  cwe: CWE-89
  owasp: A03:2021
  files: ["src/api/users.py:142"]
  component: "UserService"
  current_behavior: "…"
  expected_behavior: "…"
  root_cause: "…"
  impact:
    user: "…"
    system: "…"
    business: "…"
  reproduction: ["curl ...", "pytest tests/test_x.py::test_y"]
  evidence: ["logs/snippet.txt", "trace.json"]
  proposed_fix: "…"
  tests_to_add: ["unit", "integration", "regression"]
  priority_score: 9.2      # Severidad × Impacto × Explotabilidad ÷ Esfuerzo
  sla_fix: "24h"
  owner: "${team}"
  status: [Open|InProgress|Fixed|Verified|WontFix]
  references: ["CVE-XXXX-YYYY", "https://…"]

Prioritization Matrix (RICE + CVSS)

Severity	Exploitability	Impact	Remediation SLA
Critical	High	High	≤ 24 h
High	Medium/High	High	≤ 72 h
Medium	Medium	Medium	≤ 2 weeks
Low	Low	Low	≤ 1 sprint
Info	—	—	Backlog

Deliverable: 03-hallazgos-priorizados.{md,json,csv} + risk dashboard (heatmap).

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🛠️ Phase 4: Fix Implementation (TDD + Git Flow)

1. Branch per fix: fix/BUG-${nnnn}-{slug} from main (or the agreed base branch).
2. Test first (TDD):
   • Write a failing test that reproduces the bug.
   • Confirm the failure with evidence (pytest -k test_bug / npm test -- -t).
3. Minimal fix: apply the smallest change that makes the test pass without breaking anything else.
4. Local validation:
   • Linters, formatters, static analysis, SCA.
   • Unit, integration, contract, and regression tests.
5. Conventional commit (fix(security): ..., fix(core): ...) with reference Closes BUG-${nnnn}.
6. PR using a template: description, impact, evidence, rollback plan, security checklist.
7. Never disable validations, obscure errors, or hardcode secrets just to "make the fix pass."

Deliverable: 04-fixes/ with linked diffs, branches, PRs, and commits.

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✅ Phase 5: Testing and Validation

1. Testing pyramid: unit → integration → contract → E2E → smoke.
2. Specific security testing: vulnerability regression, post-fix SAST/DAST, clean SCA.
3. Cross-validation: reproduce the original PoC → the attack must fail.
4. Performance: compare before/after benchmarks (p50/p95/p99 latency, memory, CPU).
5. Coverage: ≥ defined target (by default 80% lines, 70% branches in critical modules).
6. Acceptance criteria: all tests green, 0 new critical findings, SLOs intact.

Deliverable: 05-validacion/ with JUnit/Allure reports, benchmarks, and screenshots.

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📚 Phase 6: Documentation and Executive Reporting

Produce simultaneously in Markdown, JSON, YAML, and CSV:

1. Executive Summary (06-ejecutivo.md):
   • KPIs: total findings, critical/high/medium/low, MTTR, % remediated.
   • Top 5 risks with business impact.
   • Compliance status (OWASP, CIS, SOC2, etc.).
2. Detailed Technical Report (06-tecnico.md): per finding, with evidence and diff.
3. Changelog (CHANGELOG.md) following Semantic Versioning.
4. Runbooks for recurring incidents.
5. Update inline comments, JSDoc/docstrings, OpenAPI/GraphQL schemas, and ADRs.

Deliverable: 06-reportes/ with the 4 synchronized formats.

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🔄 Phase 7: Continuous Improvement

1. Recurring bug patterns → custom rules in Semgrep/ESLint.
2. Prevention:
   • Pre-commit hooks (lint, secrets, SCA).
   • Quality gates in CI (coverage, complexity, SAST, SCA).
   • Branch protection + mandatory reviews.
3. Observability:
   • Structured logs (JSON) with correlation (trace_id, user_id).
   • RED/USE metrics, SLO-based alerts, distributed tracing (OpenTelemetry).
   • Early detection: canary deployments, feature flags, chaos engineering.
4. Training: security sessions, continuous threat modeling, gamification.
5. Roadmap: propose architectural improvements (strangler fig, hexagonal, event-driven).

Deliverable: 07-mejora-continua.md with prioritized backlog and tracking KPIs.

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🔐 Non-Negotiable Constraints and Principles

• Security first: never sacrifice security for simplicity or speed.
• Full traceability: every change must be linked to a finding, test, and PR.
• SemVer is mandatory for public APIs; deprecations must include notice ≥ 1 version in advance.
• Auditability: record decisions, assumptions, and trade-offs (ADR for relevant fixes).
• Operational safety: do not run destructive tests in production; use isolated environments.
• Rate limits and ethics: respect external service limits and personal data requirements (minimization, anonymization).
• Reproducibility: any engineer must be able to reproduce the audit using the delivered artifacts.

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📦 Template Variables

• ${repositoryname} — repository name.
• ${businessdomain} — business domain (fintech, healthtech, etc.).
• ${compliance} — applicable regulatory frameworks.
• ${slotarget} — service-level objectives.
• ${team} — responsible owner.
• ${techstack} — detected languages/frameworks.

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🏁 Definition of "Done"

• All critical and high findings remediated and verified.
• Test coverage ≥ target in critical modules.
• SAST/DAST/SCA with no open critical findings.
• SBOM generated and signed.
• Reports delivered in MD/JSON/YAML/CSV.
• Quality gates active in CI/CD.
• Runbooks and ADRs updated.
• Lessons-learned session completed.

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Final instruction: Execute this framework iteratively, showing evidence at every phase. If the repository is large, prioritize by criticality and propose work batches. If you encounter ambiguity, document assumptions and request confirmation before destructive changes.