Drupal unrestricted upload

Summaryinfo

A vulnerability marked as critical has been reported in Drupal. The affected element is an unknown function. This manipulation causes unrestricted upload. This vulnerability is tracked as CVE-2022-25277. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability has been found in Drupal (Content Management System) (the affected version is unknown) and classified as critical. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a unrestricted upload vulnerability. The CWE definition for the vulnerability is CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Drupal core sanitizes filenames with dangerous extensions upon upload (reference: SA-CORE-2020-012) and strips leading and trailing dots from filenames to prevent uploading server configuration files (reference: SA-CORE-2019-010). However, the protections for these two vulnerabilities previously did not work correctly together. As a result, if the site were configured to allow the upload of files with an htaccess extension, these files' filenames would not be properly sanitized. This could allow bypassing the protections provided by Drupal core's default .htaccess files and possible remote code execution on Apache web servers. This issue is mitigated by the fact that it requires a field administrator to explicitly configure a file field to allow htaccess as an extension (a restricted permission), or a contributed module or custom code that overrides allowed file uploads.

The weakness was disclosed 04/26/2023 as sa-core-2022-014. The advisory is shared at drupal.org. This vulnerability is known as CVE-2022-25277 since 02/16/2022. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1608.002 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Content Management System

Name

• Drupal

License

• open-source

Website

• Product: https://www.drupal.org/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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