Drupal 7.0/7.1/7.2/7.3/7.4 File Upload authorization

Summaryinfo

A vulnerability categorized as critical has been discovered in Drupal 7.0/7.1/7.2/7.3/7.4. This affects an unknown part of the component File Upload. The manipulation results in authorization. This vulnerability was named CVE-2011-2726. The attack may be performed from remote. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Drupal 7.0/7.1/7.2/7.3/7.4 (Content Management System). Affected is an unknown functionality of the component File Upload. The manipulation with an unknown input leads to a authorization vulnerability. CWE is classifying the issue as CWE-863. The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An access bypass issue was found in Drupal 7.x before version 7.5. If a Drupal site has the ability to attach File upload fields to any entity type in the system or has the ability to point individual File upload fields to the private file directory in comments, and the parent node is denied access, non-privileged users can still download the file attached to the comment if they know or guess its direct URL.

The bug was discovered 07/27/2011. The weakness was presented 11/15/2019 (Website). The advisory is available at drupal.org. This vulnerability is traded as CVE-2011-2726 since 07/11/2011. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 3033 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 12801 (Drupal Core Access Bypass Vulnerability (SA-CORE-2011-003)).

Upgrading to version 7.5 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at OSVDB (74150†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Content Management System

Name

• Drupal

Version

• 7.0
• 7.1
• 7.2
• 7.3
• 7.4

License

• open-source

Website

• Product: https://www.drupal.org/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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