# CVE-2023-32321: Ckan remote code execution and private information access via crafted resource ids

Source: https://junglewise.ai/threats/cve-2023-32321-ckan-remote-code-execution-and-private-information-access-via  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2023-05-24  
License: CC BY 4.0 with a link back

CVE-2023-32321 · Severity: critical · CVSS 9.8 · Published 2023-05-24

Specific vulnerabilities:

* Arbitrary file write in `resource_create` and `package_update` actions, using the `ResourceUploader` object.  Also reachable via `package_create`, `package_revise`, and `package_patch` via calls to `package_update`.
* Remote code execution via unsafe pickle loading, via Beaker's session store when configured to use the file session store backend.
* Potential DOS due to lack of a length check on the resource id.
* Information disclosure: A user with permission to create a resource can access any other resource on the system if they know the id, even if they don't have access to it.
* Resource overwrite: A user with permission to create a resource can overwrite any resource if they know the id, even if they don't have access to it.  

### Impact

A user with permissions to create or edit a dataset can upload a resource with a specially crafted id to write the uploaded file in an arbitrary location. This can be leveraged to Remote Code Execution via Beaker's insecure pickle loading. 

### Patches

All the above listed vulnerabilities have been fixed in CKAN 2.9.9 and CKAN 2.10.1
The patches for CKAN 2.9 should apply easily to previous CKAN versions.

Technologies: [ckan (PyPI)](https://junglewise.ai/threats/technologies/pypi-ckan). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2023-32321 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2023-32321 being exploited in the wild.

**How severe is CVE-2023-32321?** Critical severity, with a CVSS score of 9.8, published 24 May 2023.

**Which products and versions are affected?** ckan (PyPI) < 2.9.9, ECOSYSTEM:introduced=0,fixed=2.9.9, ECOSYSTEM:introduced=0,fixed=2.9.9,introduced=2.10.0,fixed=2.10.1.

**Is there a fix for CVE-2023-32321?** Yes. ckan (PyPI): upgrade to 2.10.1, 2.9.9 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2023-32321?** Check whether you run ckan (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- ckan (PyPI): upgrade to 2.10.1, 2.9.9 or later

  ```sh
  pip install "ckan>=2.10.1"
  ```


## Affected products

- ckan (PyPI) < 2.9.9, ECOSYSTEM:introduced=0,fixed=2.9.9, ECOSYSTEM:introduced=0,fixed=2.9.9,introduced=2.10.0,fixed=2.10.1

## Identifiers

- CVE-2023-32321
- GHSA-446m-hmmm-hm8m
- PYSEC-2026-312

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