CVE-2023-31250 Drupal core - Moderately critical - Access bypass - SA-CORE-2023-005

Medium 6.5 Published Updated

Attackers can bypass access controls to read private files due to insufficient path sanitization in Drupal core's file download facility.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2023-31250?

CVE-2023-31250 is a medium-severity path traversal vulnerability in Drupal Drupal, published on 26 Apr 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

The file download facility doesn't sufficiently sanitize file paths in certain situations. This may result in users gaining access to private files that they should not have access to. Some sites may require configuration changes following this security release. Review the release notes for your Drupal version if you have issues accessing private files after updating.

Weakness: CWE-863

Which versions are affected by CVE-2023-31250?

10 open source packages ship an affected version, including drupal/core and drupal. It affects 1 product.

PackageAffectedFixed in
drupal/core PackagistFrom 10.0.010.0.8
drupal/core PackagistFrom 10.0.010.0.8
drupal/core PackagistFrom 7.0.07.96
drupal/core PackagistFrom 7.0.07.96
drupal/core PackagistFrom 8.0.09.4.14, 9.5.8, 10.0.8
drupal/core PackagistFrom 9.0.09.4.14
4 more packages
drupal/core PackagistFrom 9.0.09.4.14
drupal/core PackagistFrom 9.5.09.5.8
drupal/core PackagistFrom 9.5.09.5.8
drupal BitnamiFrom 7.0.07.96.0, 9.4.14, 9.5.8, 10.0.8

Products include Drupal Drupal.

How do I fix CVE-2023-31250?

Upgrade drupal/core to a fixed version for your release line: 10.0.8, 7.96, 9.4.14 or 9.5.8.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2023-31250 being exploited?

There is no known exploitation of CVE-2023-31250 in the wild and no public exploit code.

All Drupal Drupal vulnerabilities

Sources

Also known as BIT-drupal-2023-31250, DRUPAL-CORE-2023-005, GHSA-8849-cv9f-vccm, UBUNTU-CVE-2023-31250.

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