Description
In Drupal 8 prior to 8.3.4; The file REST resource does not properly validate some fields when manipulating files. A site is 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.
Remediation
References
Related Vulnerabilities
MediaWiki Loop with Unreachable Exit Condition ('Infinite Loop') Vulnerability (CVE-2021-42040)
XWiki Improper Encoding or Escaping of Output Vulnerability (CVE-2022-36099)
Nginx Integer Overflow or Wraparound Vulnerability (CVE-2017-7529)
OpenSSL NULL Pointer Dereference Vulnerability (CVE-2020-1967)