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Drupal Malicious file upload with filenames stating with dot

Moderate severity GitHub Reviewed Published May 15, 2024 to the GitHub Advisory Database • Updated May 15, 2024

Package

composer drupal/drupal (Composer)

Affected versions

>= 8.0.0, < 8.7.11
>= 8.8.0, < 8.8.1

Patched versions

8.7.11
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.

References

Published to the GitHub Advisory Database May 15, 2024
Reviewed May 15, 2024
Last updated May 15, 2024

Severity

Moderate

Weaknesses

CVE ID

No known CVE

GHSA ID

GHSA-58xv-7h9r-mx3c

Source code

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