The file REST resource did not properly validate some fields when manipulating files. A site was only affected by this if the site has the RESTful Web Services (rest) module enabled, the file REST resource is enabled and allows PATCH requests, and an attacker can get or register a user account on the site with permissions to upload files and to modify the file resource.
Part of security release SA-CORE-2017-003
This vulnerability affects the following application versions:
- Drupal 8.1.2
- Drupal 8.1.3
- Drupal 8.1.4
- Drupal 8.1.5
- Drupal 8.1.6
- Drupal 8.1.7
- Drupal 8.1.8
- Drupal 8.1.9
- Drupal 8.1.10
- Drupal 8.2.0
- Drupal 8.2.1
- Drupal 8.2.2
- Drupal 8.2.3
- Drupal 8.2.4
- Drupal 8.2.5
- Drupal 8.2.6
- Drupal 8.2.7
- Drupal 8.2.8
- Drupal 8.3.0
- Drupal 8.3.1
- Drupal 8.3.2
- Drupal 8.3.3