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🛡️ GHSA-7gwj-7fhm-vw4w — core

⚪ Unknown ✅ No Known Exploit CWE-434 OSV
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Drupal core unrestricted file upload

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is high, an attacker needs administrative privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity high, availability none.

Weakness class

GHSA-7gwj-7fhm-vw4w is classified as CWE-434: Unrestricted Upload of File with Dangerous Type. Uploads are accepted without restricting type, so an executable file can be placed where the server will run it.

Affected software

GHSA-7gwj-7fhm-vw4w is recorded against 1 package.

  • drupal/core (from 8.8.0 up to 8.8.1)

Timeline and source

Published on 15 May 2024 and last revised on 29 November 2024. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

github.com (Web)
github.com (Package)
www.drupal.org (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:H/A:N
CWE CWE-434
Public Exploit ✅ No
Source OSV
Published 2024-05-15
Updated 2026-08-20
Modified 2024-11-29
Fix URL N/A

Affected Packages

Software From version Fixed in
drupal/core 8.8.0 8.8.1

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