# DRUPAL-CONTRIB-2021-015: Chaos tool suite (ctools) module provides a number of APIs and extensions for Drupal, its 8.x-3.x branch is a start from scratch to evaluate

> Attackers can bypass block access controls in the Drupal ctools module if custom access methods are implemented, potentially viewing restricted content.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 16 Jun 2021

## What is DRUPAL-CONTRIB-2021-015?

DRUPAL-CONTRIB-2021-015 is a missing authorization vulnerability in drupal/ctools, published on 16 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Chaos tool suite (ctools) module provides a number of APIs and extensions for Drupal, its 8.x-3.x branch is a start from scratch to evaluate the features of ctools that didn't make it into Drupal Core 8.0.x and port them.

The module doesn't sufficiently handle block access control on its EntityView plugin. This is a followup to more fully implement the fixes from [SA-CONTRIB-2021-009](https://www.drupal.org/sa-contrib-2021-009)

This vulnerability is mitigated by the fact that successful exploitation requires special conditions in place such as custom blockAccess() method that differs from the default return value of 'AccessResult::allowed()' and extending from EntityView.

## Which versions are affected by DRUPAL-CONTRIB-2021-015?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `drupal/ctools` | Packagist:https://packages.drupal.org/8 | All versions | 3.7.0 |

## How do I fix DRUPAL-CONTRIB-2021-015?

Apply the vendor's patch.

## Is DRUPAL-CONTRIB-2021-015 being exploited?

There is no known exploitation of DRUPAL-CONTRIB-2021-015 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for DRUPAL-CONTRIB-2021-015 and fix it if it is affected.

What it is: DRUPAL-CONTRIB-2021-015 is a missing authorization vulnerability in drupal/ctools, published on 16 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of DRUPAL-CONTRIB-2021-015 in the wild and no public exploit code.

Affected product: drupal/ctools. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/DRUPAL-CONTRIB-2021-015/ (Markdown: https://insights.sbomify.com/DRUPAL-CONTRIB-2021-015/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/DRUPAL-CONTRIB-2021-015

---
From sbomify Insights: https://insights.sbomify.com/DRUPAL-CONTRIB-2021-015/
Summaries are generated and may contain mistakes; the official description above is the record.