drupal drupal CVE-2020-13671 in Drupal and Fedora Project Products
Published on November 20, 2020

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Drupal core does not properly sanitize certain filenames on uploaded files, which can lead to files being interpreted as the incorrect extension and served as the wrong MIME type or executed as PHP for certain hosting configurations. This issue affects: Drupal Drupal Core 9.0 versions prior to 9.0.8, 8.9 versions prior to 8.9.9, 8.8 versions prior to 8.8.11, and 7 versions prior to 7.74.

Vendor Advisory NVD

Known Exploited Vulnerability

This Drupal core Un-restricted Upload of File vulnerability is part of CISA's list of Known Exploited Vulnerabilities. Improper sanitization in the extension file names is present in Drupal core.

The following remediation steps are recommended / required by July 18, 2022: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2020-13671 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 2.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

What is an Unrestricted File Upload Vulnerability?

The software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.

CVE-2020-13671 has been classified to as an Unrestricted File Upload vulnerability or weakness.


Products Associated with CVE-2020-13671

You can be notified by stack.watch whenever vulnerabilities like CVE-2020-13671 are published in these products:

Drupal
 
Fedora Project Fedora
 

What versions are vulnerable to CVE-2020-13671?