[IT-SecNots] [Security-news] S3 File System - Moderately critical - Access bypass - SA-CONTRIB-2022-057

[security-news AT drupal.org]

View online: https://www.drupal.org/sa-contrib-2022-057

Project: S3 File System [1]
Date: 2022-September-28
Security risk: *Moderately critical* 10∕25
AC:Complex/A:None/CI:Some/II:None/E:Theoretical/TD:Uncommon [2]
Vulnerability: Access bypass

Description: 
This module enables you to utilize S3-compatible storage as a Drupal
filesystem.

The module doesn't sufficiently prevent file access across multiple
filesystem schemes stored in the same bucket.

This vulnerability is mitigated by the fact that an attacker must obtain a
method to access arbitrary file paths, the site must have public or private
takeover enabled, and the file metadata cache must be ignored.

Solution: 
Install the latest version:

  * If you use the S3 File System module for Drupal 7.x, upgrade to S3 File
    System 7.x-2.14 [3]

Reported By: 
  * Conrad Lara [4]
  * Guy Elsmore-Paddock [5]

Fixed By: 
  * Conrad Lara [6]
  * Ron Shimshock [7]

Coordinated By: 
  * Greg Knaddison [8] of the Drupal Security Team


[1] https://www.drupal.org/project/s3fs
[2] https://www.drupal.org/security-team/risk-levels
[3] https://www.drupal.org/project/s3fs/releases/7.x-2.14
[4] https://www.drupal.org/user/1790054
[5] https://www.drupal.org/user/156932
[6] https://www.drupal.org/user/1790054
[7] https://www.drupal.org/user/184990
[8] https://www.drupal.org/user/36762

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