GitHub Advisoryadvisory · Packagist

GHSA-7gwj-7fhm-vw4w Drupal core unrestricted file upload

MEDIUM Published 2024-05-15 Modified 2024-05-15 Official page ↗
Ecosystem
Packagist
Packages
drupal/core
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N
Weaknesses
CWE-434
Reviewed
2024-05-15

Affected packages

• Packagist drupal/core: >= 8.0.0, < 8.7.11 → fixed in 8.7.11 • Packagist drupal/core: >= 8.8.0, < 8.8.1 → fixed in 8.8.1

Description

Drupal 8 core's file_save_upload() function does not strip the leading and trailing dot ('.') from filenames, like Drupal 7 did. Users with the ability to upload files with any extension in conjunction with contributed modules may be able to use this to upload system files such as .htaccess in order to bypass protections afforded by Drupal's default .htaccess file. After this fix, file_save_upload() now trims leading and trailing dots from filenames.

Related

Weakness · CWE (1)

  • CWE-434 Unrestricted Upload of File with Dangerous Type weakness

References