Auth Bypass in Strapi with Cockroachdb

Auth bypass occurs when access controls are circumvented, allowing unauthenticated or unauthorized requests to reach sensitive endpoints. In Strapi, this can manifest through misconfigured policies, overly permissive roles, or insecure direct object references (IDOR). When Strapi is paired with Cockroachdb, the distributed SQL database does not inherently enforce application-level permissions; it executes queries as issued by the application. If Strapi’s query building or policy logic contains flaws, an attacker may manipulate parameters such as IDs or tokens to access or modify records they should not reach.

Consider a Strapi collection type Article with a REST endpoint GET /articles/:id. A typical controller might fetch an article by ID using a raw query or an ORM-like wrapper without verifying ownership or visibility. With Cockroachdb as the backend, the SQL issued might resemble SELECT * FROM articles WHERE id = $1. If the :id value is directly bound without ensuring the requesting user’s permissions, an attacker can iterate through IDs and read articles they should not see (BOLA/IDOR). Strapi’s built-in role-based access control (RBAC) can mitigate this when correctly configured, but custom controllers or services that bypass Strapi’s policies introduce risk.

Additionally, authentication misconfigurations can compound the issue. If session management or JWT validation is improperly enforced in Strapi middleware, an attacker might forge tokens or reuse expired ones. Cockroachdb stores user and role data; if the application queries this data with insufficient context (e.g., missing tenant or scope filters), an attacker leveraging an authenticated but low-privilege account might elevate permissions. For example, a crafted request could exploit weak parameter handling to influence which Cockroachdb rows are returned, effectively bypassing intended restrictions. Common root causes include missing ownership checks, incorrect default scopes, and failure to validate input against the authenticated context.

OpenAPI/Swagger analysis is valuable here because it can highlight endpoints that lack required security schemes or have inconsistent parameter definitions. When spec definitions do not align with runtime behavior, the attack surface widens. MiddleBrick scans such misalignments and flags endpoints where authentication or authorization checks appear missing or inconsistent, providing prioritized findings with severity and remediation guidance. This is especially relevant when custom controllers interact directly with Cockroachdb, as the database layer may not enforce constraints that the application layer should.

Remediation focuses on enforcing strict ownership checks and parameter validation in Strapi controllers and services. Always resolve the authenticated user’s identity from the request context and ensure every database query includes tenant or ownership filters. With Cockroachdb, use parameterized queries to prevent injection and ensure predictable row-level security.

Example: secure controller fetching an article with ownership validation.

// src/api/article/controllers/article.js
'use strict';

module.exports = {
  async findOne(ctx) {
    const { id } = ctx.params;
    const user = ctx.state.user; // authenticated user from Strapi middleware

    if (!user) {
      ctx.unauthorized();
      return;
    }

    // Use parameterized query via Strapi's entity service or direct client
    const article = await strapi.db.query('api::article.article').findOne({
      where: {
        id,
        authorId: user.id, // enforce ownership
        published: true,
      },
    });

    if (!article) {
      ctx.notFound();
      return;
    }

    return article;
  },
};

If using a raw Cockroachdb client, ensure placeholders are used and no string concatenation occurs.

// src/api/article/services/raw.js
'use strict';

const { Client } = require('cockroachdb');

const client = new Client({
  connectionString: process.env.DATABASE_URL,
});

async function getArticleByIdForUser(id, userId) {
  const query = 'SELECT id, title, content, author_id FROM articles WHERE id = $1 AND author_id = $2 AND published = $3';
  const values = [id, userId, true];
  const { rows } = await client.query(query, values);
  return rows[0] || null;
}

module.exports = { getArticleByIdForUser };

In Strapi v4, leverage policies to centralize authorization. Define a policy that checks user roles and resource ownership before allowing access.

// src/policies/check-ownership.js
module.exports = async (ctx, next) => {
  const user = ctx.state.user;
  const id = ctx.params.id;

  const article = await strapi.db.query('api::article.article').findOne({
    where: { id },
  });

  if (!article || article.authorId !== user.id) {
    ctx.forbidden('You do not have permission to access this resource');
    return;
  }

  await next();
};

Mapping findings to compliance frameworks such as OWASP API Top 10 (2023) helps prioritize fixes. Auth bypass aligns with Broken Object Level Authorization (BOLA), a common API risk. MiddleBrick’s per-category breakdowns can highlight these issues and suggest concrete remediation steps.